创建一个简单的乘法口诀
 
代码如下：
 
public class cz {
    public static void main(String[] args) {
        int o=0;
        for(int i=1;i<10;i++){
            for(int j=1;j<=i;j++){
                o=i*j;
                System.out.print(i+"x"+j+"="+o+" ");
            }
            System.out.print("\n");

        }
    }
}
 
输出：
 
 
创建一个简单的正三角形
 
代码如下：
 
public class cz {
    public static void main(String[] args){
        int i,j,k;
        for(i=1;i<=5;i++){
            for(j=1;j<=5-i;j++){
                System.out.print(" ");
            }
            for(k=1;k<=i;k++){
                System.out.print("* ");
            }
            System.out.print("\n");
        }

    }

}

 
输出：
 
 
创建一个简单的菱形
 
代码如下：
 
public class cz12 {
    public static void main(String[] args){
        int m=3;
        for (int i=1;i<=m;i++){
            for (int j=1;j<=m-i;j++){
                System.out.print(" ");
            }
            for (int k=1;k<=2*i-1;k++){
                System.out.print("*");
            }
            System.out.print("\n");
        }
        for (int i=1;i<=2;i++){
            for (int j=1;j<=i;j++){
                System.out.print(" ");
            }
            for (int k=3;k>=2*i-1;k--){
                System.out.print("*");
            }
            System.out.print("\n");
        }
    }
}


 
输出：
 
 
冒泡排序
 
代码如下：
 
public class cz
{

    public static void main(String[] args)
    {
      int[] arr={123,354,354,54,4,6,654};//将数存储到数组里

      int max=getMax(arr);//调用getMax方法
        System.out.println("最大值为"+max);//输出结果语句
        int min=getMin(arr);//调用getMin方法
        System.out.println("最小值为"+min);//输出结果语句
        System.out.print("冒泡排序为:");//输出结果语句
        getSunxu(arr);
        printArray(arr);System.out.println("\n");
        System.out.println("长度为："+arr.length);

    }
    public static int getMax(int[] arr)//定义方法
    {
        int max=arr[0];//将数组的第一个值赋予最大值
        for(int i=1;i<arr.length;i++)//遍历数组
        {
            if(max<arr[i])
            {
                max = arr[i];
            }//将数组中的值一一与最大值对比

        }
        return max;//返还最大值
    }
    public static void printArray(int[] arr)
    {
        for(int i=0;i<arr.length;i++)
        {
            if(i!=arr.length)
            System.out.print(arr[i]+",");
            else
                System.out.println(arr[i]);
        }
    }
    public static int getMin(int[] arr)
    {
        int min=arr[0];//将数组的第一个值赋予最小值
        for(int i=1;i<arr.length;i++)//遍历数组
        {
            if (min>arr[i]) {
                min = arr[i];//将数组中的值一一与最大值对比
            }
        }
        return min;//返还最小值
    }
    //冒泡排序
    public static void getSunxu(int[] arr)
    {
        for(int x=0;x<arr.length-1;x++)
        {
            for(int y=0;y<arr.length-1-x;y++)
            {
                if (arr[y]>arr[y+1])
                {
                     int temp=arr[y];
                          arr[y]=arr[y+1];
                          arr[y+1]=temp;
                }
            }
        }
    }

}

 
输出：
 

微信小程序在线点餐外卖系统主要包含功能：微信登录、普通用户注册和登录、用户信息修改、用户密码修改；用户首页、菜品分类、产品浏览、增加数量、减少数量、订餐、收藏、地址管理、评论、广告设置等；提供项目源代码（小程序+接口+后台）。
 
开发工具：IDEA2020
 开发环境：JDK1.8 +Tomcat8
 数据库：Mysql8
 
小程序
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
后台
 

 
 
 
 
 
 
 

BBS论坛演示下载
 
http://download.csdn.net/detail/zhangyulin54321/5606233
 
源码下载：
 
http://download.csdn.net/detail/zhangyulin54321/5606257
 
OA自动化办公系统演示下载：
 
http://download.csdn.net/detail/zhangyulin54321/5655571
 
源码下载：
 
http://www.kuaipan.cn/file/id_153813112561074178.htm

     这套管理系统是本人学习JAVA一个月的作品，开发周期近10天左右，代码量约1500行，基于Eclipse JDK1.7，运用了Swing/SWT 开发工具Windowbuilder，配套的还包括JDBC驱动、以及微软的SQL Server数据库。源码全部开放，本人多轮测试，结果OK。由于本人初学JAVA，代码漏洞及不足之处难免，还请多多指正！实用方面，如果加入扫码器接口，软件应该会更完美！只是条件有限，仅为学习。
 
第一部分：首先看下软件信息，大小600k不到，双击运行，前提JDK1.7及以上环境配置好， SQL Server数据库安装好，数据库配置3个table如下图：
 
 
 
 
 
 
 
双击.jar程序，打开系统，界面如图：
 
 
工具栏两个选项：数据库管理、关于，主界面5大功能块进货、定价、销售、报废、报表。其他（未开发功能）。
 
点开工具栏数：据库管理，可以选择清除系统中旧数据，防止系统运行几年后数据累积增导致运行速度变慢：
 
 
点击两年前数据，弹出对话框，提示是否删除yyyy-mm-dd之前的数据，点击确定弹出清理成功！
 
 
点击关于，显示版本等信息：
 
 
点击主界面进货，进入进货管理界面，输入我们进货的信息：品名（商品名称）、数量、单位（销售单位，不支持单位换算）、总价（该数量下的总金额），录入如下信息
 
 
 
 
点击提交按钮，提示成功！（如果商品之前有记录过，输入商品名后，按Enter键，会自动带出商品单位）。 我们继续多输入一些其他商品。。。
 
 
 
 
点击定价，进入定价界面，界面左边两个按钮。 查找按钮：首先选择日期区间（系统默认一个月，我们调整为最近三天），起始和结束日期，对这一时间区间进货的商品指定销售价格
 
 
 
 
我们点击查找按钮，显示我们2016/03/20-2016/03/28的所有进货商品，系统自动计算出进货的价格，以此作为销售价格的参考
 
 
 
 
再看左下角的统一按比例加价（进货单价*比例）和 统一按固定值加价（进货单价+固定值），我们模拟比例加价25%，点击确定按钮，看下销售单价变化
 
 
 
 
当然销售单价可以手动改动，比如我们将雀巢咖啡的价格修改为22元/盒，直接更改后按Enter即可
 
 
确定好销售价格后，我们点提交按钮，提示提交成功！
 
 
 
再点击我们的销售功能，进入销售管理界面：下拉框直接选择商品，系统自动带出商品单位，如果上一步你有维护价格，系统也会自动带出销售价格，你只需要输入数量即可。
 
当然，如果没有维护销售价格，你可以手动输入单价，单价可以被手动调整
 
 
比如客户要买薯片2个，选择百事薯片，系统带出价格4.75（可以被修改），输入数量2个，点击>>按钮，加入购物车，总价9.5，我们多购买一些商品
 
 
 
 
如果我想将真彩水笔从购物车移除，选中点击删除按钮即可
 
 
如果同一商品多次加入购物车，系统会提示重复加入，请删除后，重新输入数量再次加入。最后，我们点击提交按钮，系统会计算购物车的总金额，提示是否提交
 
 
点是（Y），显示提交结果，交易成功。
 
 
 
回到主界面，点击报废功能，如有过期等原因导致报废，这个功能最实用了。选择商品，输入数量，按Enter键，显示成本，点击提交，显示报废成功！
 
 
 
 
再回到主界面，进入报表功能，这部分稍微复杂点，首先看报表界面。包含三大功能：记录、库存、利润。 在未锁定日期区间前，你不能进行任何操作。
 
 
 
 
我们选择最近一个月的记录，然后锁定日期，展开左边功能节点——记录：进货记录、销售记录、报废记录。   库存：当前库存（与日期区间无关）。  最后是利润分析（计算销售收入、成本之净利润。 
 
 比如我们点击销售记录：
 
 
 
如果在实际中，进货、报废、或者销售录入出错了，我们都可以在这里锁定日期，找到记录然后选中，鼠标右键选择删除记录
 
 
 
 
点击删除记录，提示删除的数据不加入报表计算，确认删除，提示删除成功
 
 
 
我们再看看当前剩余商品库存，帮助核对商品数量
 
 
 
 
最后是利润分析，这份报表十分重要
 
 
最后从这份报表来验证我们的操作结果：
 
1.康师傅红烧牛肉面：销售了5袋，每袋销售价格2.5，进货价格2.0，销售利润2.5，没有报废记录，净利润2.5
 
2.百事薯片：销售2份，每份销售价格4.75，进货价格3.8，销售利润1.9，其中有一份因为过期导致成本增加3.8，所以净利润亏1.9
 
........
 
最后总计销售利润和报废成本，得到净利润
 
 
 
好了，功能部分终于说完了。直接贡献代码部分，不用多做说明了，本人注释一向清楚：
 
 
 
第二部分：源码
 
主界面：
 
 
 
package org.screen;

import java.awt.event.ActionListener;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.GregorianCalendar;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPopupMenu;
import javax.swing.SwingConstants;

import java.awt.Color;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.event.ActionEvent;
import javax.swing.JToolBar;

public class screen {

	private JFrame frame;
	private JButton button_4;
	private JButton button_5;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {    //允许多次执行
			public void run() {
				try {
					screen window = new screen();  //new一个窗口（全屏）
					window.frame.setVisible(true);  //设置fram可见
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the application.
	 */
	public screen() {
		initialize();  
	}

	/**
	 * Initialize the contents of the frame.
	 */
	private void initialize() {
		frame = new JFrame("零售业管理系统");
		frame.getContentPane().setFocusTraversalPolicyProvider(true);
		int screenWidth = java.awt.Toolkit.getDefaultToolkit().getScreenSize().width; //根据用户屏幕，自动调整屏幕元素位置
		int screenHeight = java.awt.Toolkit.getDefaultToolkit().getScreenSize().height;

		frame.setBounds(0, 0, screenWidth, screenHeight); //设置fram的位置和长宽
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //定义close动作
		frame.getContentPane().setLayout(null); 

		JLabel lblNewLabel = new JLabel("零售业管理系统 V1.0"); //设置系统标题
		lblNewLabel.setHorizontalAlignment(SwingConstants.CENTER);
		lblNewLabel.setForeground(Color.BLUE);
		lblNewLabel.setFont(new Font("仿宋", Font.BOLD | Font.ITALIC, 36));
		lblNewLabel.setBounds((screenWidth-400)/2, (screenHeight-350)/2 - 80, 400, 50);
		frame.getContentPane().add(lblNewLabel);		
		
		JButton newButton = new JButton("进货");   //点击进货按钮，调用进货管理程序界面
		newButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				stock_screen.main(null);
			}
		});
		newButton.setFont(new Font("仿宋", Font.BOLD, 20)); //设置按钮字体，大小，位置
		newButton.setBounds((screenWidth-400)/2, (screenHeight-350)/2, 400, 50);
		frame.getContentPane().add(newButton); //放入fram容器中
		
		JButton button = new JButton("定价");  //设置销售按钮
		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				pricing_screen.main(null);
			}
		});
		button.setFont(new Font("仿宋", Font.BOLD, 20));
		button.setBounds((screenWidth-400)/2, (screenHeight-350)/2+60*1, 400, 50);
		frame.getContentPane().add(button);
		
		JButton button_1 = new JButton("销售");  //设置报废按钮
		button_1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				sales_screen.main(null);
			}
		});
		button_1.setFont(new Font("仿宋", Font.BOLD, 20));
		button_1.setBounds((screenWidth-400)/2, (screenHeight-350)/2+60*2, 400, 50);
		frame.getContentPane().add(button_1);
		
		JButton button_2 = new JButton("报废");  //设置库存按钮
		button_2.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				waste_screen.main(null);
			}
		});
		button_2.setFont(new Font("仿宋", Font.BOLD, 20));
		button_2.setBounds((screenWidth-400)/2, (screenHeight-350)/2+60*3, 400, 50);
		frame.getContentPane().add(button_2);
		
		JButton button_3 = new JButton("报表"); //设置利润按钮
		button_3.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				report_screen.main(null);
			}
		});
		button_3.setFont(new Font("仿宋", Font.BOLD, 20));
		button_3.setBounds((screenWidth-400)/2, (screenHeight-350)/2+60*4, 400, 50);
		frame.getContentPane().add(button_3);
		
		JButton btnNewButton = new JButton("其他");
		btnNewButton.setFont(new Font("仿宋", Font.BOLD, 20));
		btnNewButton.setFocusPainted(false);
		btnNewButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
		        JOptionPane.showMessageDialog(null, "功能暂未开放！");
			}
		});
		btnNewButton.setBounds((screenWidth-400)/2, (screenHeight-350)/2+60*5, 400, 50);
		frame.getContentPane().add(btnNewButton);

		//toolbar上增加两个按钮选项 数据管理和关于
		button_4 = new JButton("数据管理");
		button_4.addActionListener(new ActionListener() {
			//点击按钮事件
			public void actionPerformed(ActionEvent e) {
				JPopupMenu popupMenu = new JPopupMenu();//加载popupMenu选项
				JMenu menu = new JMenu("清空");//清理旧数据，优化数据库
				JMenuItem item_1 = new JMenuItem("1年前数据");
				JMenuItem item_2 = new JMenuItem("2年前数据");
				JMenuItem item_3 = new JMenuItem("3年前数据");
				JMenuItem item_4 = new JMenuItem("4年前数据");
				JMenuItem item_5 = new JMenuItem("5年前数据");
				menu.add(item_1);
				menu.add(item_2);
				menu.add(item_3);
				menu.add(item_4);
				menu.add(item_5);
				popupMenu.add(menu);
	
				popupMenu.show(button_4, 0, button_4.getY() + button_4.getHeight());
				//选择toolbar里item事件，执行旧数据清理
				item_1.addActionListener(new ActionListener() {
					
					@Override
					public void actionPerformed(ActionEvent e) {
						GregorianCalendar gc=new GregorianCalendar(); //当前日期的前一年
						gc.setTime(new Date());
						gc.add(1, -1);	
						SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 设置指定格式的当前日期时间
						String date = df.format(gc.getTime());						
						new OperationSqlData().DeleteSqlDataByYear(date);
					}
				});
				
				item_2.addActionListener(new ActionListener() {
					
					@Override
					public void actionPerformed(ActionEvent e) {
						GregorianCalendar gc=new GregorianCalendar(); //当前日期的前一年
						gc.setTime(new Date());
						gc.add(1, -2);	
						SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 设置指定格式的当前日期时间
						String date = df.format(gc.getTime());						
						new OperationSqlData().DeleteSqlDataByYear(date);
					}
				});
				
				item_3.addActionListener(new ActionListener() {
					
					@Override
					public void actionPerformed(ActionEvent e) {
						GregorianCalendar gc=new GregorianCalendar(); //当前日期的前一年
						gc.setTime(new Date());
						gc.add(1, -3);	
						SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 设置指定格式的当前日期时间
						String date = df.format(gc.getTime());						
						new OperationSqlData().DeleteSqlDataByYear(date);
					}
				});
				
				item_4.addActionListener(new ActionListener() {
					
					@Override
					public void actionPerformed(ActionEvent e) {
						GregorianCalendar gc=new GregorianCalendar(); //当前日期的前两年
						gc.setTime(new Date());
						gc.add(1, -4);	
						SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 设置指定格式的当前日期时间
						String date = df.format(gc.getTime());						
						new OperationSqlData().DeleteSqlDataByYear(date);
					}
				});
				
				item_5.addActionListener(new ActionListener() {
					
					@Override
					public void actionPerformed(ActionEvent e) {
						GregorianCalendar gc=new GregorianCalendar(); //当前日期的前一年
						gc.setTime(new Date());
						gc.add(1, -5);	
						SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 设置指定格式的当前日期时间
						String date = df.format(gc.getTime());						
						new OperationSqlData().DeleteSqlDataByYear(date);
					}
				});
			}
		});
		button_4.setBorder(null);
		button_4.setFont(new Font("仿宋", Font.PLAIN, 14));
		JToolBar toolBar = new JToolBar();
		toolBar.setToolTipText("配置");
		toolBar.setRollover(true);
		toolBar.add(button_4);
		toolBar.setBounds(0, 0, screenWidth, 25);
		frame.getContentPane().add(toolBar);
		
		//分隔功能栏
		toolBar.addSeparator();

		//加入开发相关信息
		button_5 = new JButton("关于");
		button_5.setBorder(null);
		button_5.setFont(new Font("仿宋", Font.PLAIN, 14));
		toolBar.add(button_5);
		frame.getContentPane().add(toolBar);
		
		button_5.addActionListener(new ActionListener() {
			
			@Override
			public void actionPerformed(ActionEvent arg0) {
               about_screen.main(null);
			}
		});

	}
}
 
 
 
 
 
主界面——关于：
 
 
 
package org.screen;

import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JTextPane;

public class about_screen {

	private JFrame frame;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					about_screen window = new about_screen();
					window.frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the application.
	 */
	public about_screen() {
		initialize();
	}

	/**
	 * Initialize the contents of the frame.
	 */
	private void initialize() {
		frame = new JFrame();
		frame.setBounds(50, 80, 400, 200);
		JTextPane textPane = new JTextPane();
		textPane.setBounds(00, 00, 400, 200);
		frame.getContentPane().add(textPane);
		textPane.setText("此管理软件，仅为个人学习Java语言作品之一，源码全部开放，如有疑问联系QQ，初学Java不足之处还请指正，相互学习！"
				+"\r"+"\r"+ "版本 V1.0"+"\r"+"2016/03/25"+"\r"+"CSDN:居士爱吃泡面"+"\r"+"QQ:461356592");
		textPane.setEditable(false);	
	}

}
 
 
 
 
 
进货管理：
 
 
 
 
 
package org.screen;

import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import java.awt.Font;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.ActionEvent;

public class stock_screen {
	private JFrame frame;
	private JTextField textField;
	private JTextField textField_1;
	private JTextField textField_2;
	private JTextField textField_3;
	private JButton btnNewButton;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					stock_screen window = new stock_screen();  //创建进货窗口界面
					window.frame.setVisible(true);  //设置窗口可见
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the application.
	 */
	public stock_screen() {
		initialize();
	}

	/**
	 * Initialize the contents of the frame.
	 */
	private void initialize() {
		frame = new JFrame("进货管理");  //new一个Jfram容器
		int screenWidth = java.awt.Toolkit.getDefaultToolkit().getScreenSize().width/2;;  //根据用户屏幕，自动调整控件的显示位置
		int screenHeight = java.awt.Toolkit.getDefaultToolkit().getScreenSize().height/2;;
		
		frame.setBounds(screenWidth/2, screenHeight/2, screenWidth, screenHeight);
		frame.getContentPane().setLayout(null);	
		
		JLabel lblNewLabel = new JLabel("品名");  //设置label控件属性，位置
		lblNewLabel.setFont(new Font("仿宋", Font.BOLD, 20));
		lblNewLabel.setBounds((screenWidth-180)/2, (screenHeight-180)/2, 50, 20);
		frame.getContentPane().add(lblNewLabel);
		
		JLabel lblNewLabel_1 = new JLabel("数量");  //设置label控件属性，位置
		lblNewLabel_1.setFont(new Font("仿宋", Font.BOLD, 20));
		lblNewLabel_1.setBounds((screenWidth-180)/2, (screenHeight-180)/2+30*1, 50, 20);
		frame.getContentPane().add(lblNewLabel_1);
		
		JLabel lblNewLabel_2 = new JLabel("单位");  //设置label控件属性，位置
		lblNewLabel_2.setFont(new Font("仿宋", Font.BOLD, 20));
		lblNewLabel_2.setBounds((screenWidth-180)/2, (screenHeight-180)/2+30*2, 50, 20);
		frame.getContentPane().add(lblNewLabel_2);
		
		JLabel lblNewLabel_3 = new JLabel("总价");  //设置label控件属性，位置
		lblNewLabel_3.setFont(new Font("仿宋", Font.BOLD, 20));
		lblNewLabel_3.setBounds((screenWidth-180)/2, (screenHeight-180)/2+30*3, 50, 20);
		frame.getContentPane().add(lblNewLabel_3);
		
		textField = new JTextField();  //设置输入Field控件属性，位置
		textField.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				textField_2.setText(new OperationSqlData().getUnitByGoodsName(textField.getText()));
			}
		});
		textField.setBounds((screenWidth-180)/2+60, (screenHeight-180)/2, 180, 20);
		frame.getContentPane().add(textField);
		textField.setColumns(10);
		
		textField_1 = new JTextField(); //设置输入Field控件属性，位置
		textField_1.setBounds((screenWidth-180)/2+60, (screenHeight-180)/2+30*1, 120, 20);
		frame.getContentPane().add(textField_1);
		textField_1.setColumns(10);
		
		textField_2 = new JTextField(); //设置输入ComboBox控件属性，位置 ，默认下拉框两个选项
		textField_2.setBounds((screenWidth-180)/2+60, (screenHeight-180)/2+30*2, 120, 20);
		frame.getContentPane().add(textField_2);
		textField_2.setText(new OperationSqlData().getUnitByGoodsName(textField.getText()));
		
		textField_3 = new JTextField();  //设置输入Field控件属性，位置
		textField_3.setBounds((screenWidth-180)/2+60, (screenHeight-180)/2+30*3, 120, 20);
		frame.getContentPane().add(textField_3);
		textField_3.setColumns(10);
		
		btnNewButton = new JButton("提交");
		btnNewButton.setMnemonic(KeyEvent.VK_ENTER);
		btnNewButton.setFont(new Font("仿宋", Font.BOLD, 16));
		btnNewButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				if (textField.getText().isEmpty()||textField_1.getText().isEmpty()||textField_3.getText().isEmpty()||textField_2.getText().isEmpty()) //检查商品名字段是否为空
				{
				   JOptionPane.showMessageDialog(null, "输入栏位不能为空！");
				   return;
				}
					int ret = new OperationSqlData().StockIn(textField.getText(), textField_1.getText(), (String) textField_2.getText(), textField_3.getText());
					if  (ret == 1)  //根据SQL返回值判断执行结果，并显示对话框
					{
						JOptionPane.showMessageDialog(null, "存储成功");
						textField.setText(null);
						textField_1.setText(null);
						textField_2.setText(null);;
						textField_3.setText(null);
					}
					else
					{
						JOptionPane.showMessageDialog(null, "存储失败！");
					}			
			}
 				
		});
		btnNewButton.setBounds((screenWidth-180)/2+60, (screenHeight-180)/2+30*3+40, 120, 20);
		frame.getContentPane().add(btnNewButton);
	}
}
 

 定价界面
 
 
 
 
 
package org.screen;

import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.JScrollPane;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.awt.event.ActionEvent;
import javax.swing.JLabel;
import javax.swing.JOptionPane;

import java.awt.Font;
import javax.swing.JTextField;
import javax.swing.SpinnerDateModel;
import javax.swing.SpinnerModel;
import javax.swing.JSpinner;

public class pricing_screen {

	private JFrame frame;
	private JTable table;
	private DefaultTableModel model;
	private JTextField textField;
	private JTextField textField_1;
	private JSpinner spinner;
	private JSpinner spinner_1;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					pricing_screen window = new pricing_screen();
					window.frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the application.
	 */
	public pricing_screen() {
		initialize();
	}

	/**
	 * Initialize the contents of the frame.
	 */
	@SuppressWarnings("serial")
	private void initialize() {
		frame = new JFrame("销售定价");
		int screenWidth = java.awt.Toolkit.getDefaultToolkit().getScreenSize().width*2/3;
		int screenHeight = java.awt.Toolkit.getDefaultToolkit().getScreenSize().height*2/3;	
		frame.setBounds(screenWidth/6, screenHeight/6, screenWidth, screenHeight);
		frame.getContentPane().setLayout(null);

		// 依据model创建一个Jtable
		String[] header = { "品名","总价值","库存数量","单位","进货单价","销售单价" };// 设置表头
		Object[][] item = new Object[0][6];// 设置单身
		model = new DefaultTableModel(item, header) {
			public boolean isCellEditable(int row, int column) {
				if (column == 5)
					return true;
				else
					return false;
			}
		};// 创建一个model，并设置model数据不可编辑
		table = new JTable(model);// 根据model创建一个Jtable
		table.setFocusable(false);// 关闭鼠标选中单个坐标

		JScrollPane scrollPane = new JScrollPane(table);
		scrollPane.setBounds((screenWidth-780)/2+170, (screenHeight-440)/2-20, 600, 400);
		frame.getContentPane().add(scrollPane);		

		JLabel label_4 = new JLabel("起始日期");
		label_4.setFont(new Font("仿宋", Font.BOLD, 14));
		label_4.setBounds((screenWidth-780)/2, (screenHeight-440)/2-20, 60, 20);
		frame.getContentPane().add(label_4);

		JLabel label_5 = new JLabel("结束日期");
		label_5.setFont(new Font("仿宋", Font.BOLD, 14));
		label_5.setBounds((screenWidth-780)/2, (screenHeight-440)/2-20+30, 60, 20);
		frame.getContentPane().add(label_5);

		//定义两个spinner用于日期的调整
		GregorianCalendar gc=new GregorianCalendar(); //当前日期的前一个月
		gc.setTime(new Date());
		gc.add(2, -1);		
		SpinnerModel dateModel=null;
		dateModel = new SpinnerDateModel(gc.getTime(), null, null,Calendar.DAY_OF_MONTH);
		spinner = new JSpinner();
		spinner.setBounds((screenWidth-780)/2+65, (screenHeight-440)/2-20, 90, 20);
		frame.getContentPane().add(spinner);
		spinner.setModel(dateModel);  
		spinner.setEditor(new JSpinner.DateEditor(spinner,"yyyy-MM-dd"));

		SpinnerModel dateModel_1=null;
		dateModel_1 = new SpinnerDateModel(new Date(), null, null,Calendar.DAY_OF_MONTH);		
		spinner_1 = new JSpinner();
		spinner_1.setBounds((screenWidth-780)/2+65, (screenHeight-440)/2-20+30, 90, 20);
		frame.getContentPane().add(spinner_1);
		spinner_1.setModel(dateModel_1); 
		spinner_1.setEditor(new JSpinner.DateEditor(spinner_1,"yyyy-MM-dd"));			
		
		JButton button_1 = new JButton("查找");
		button_1.setFont(new Font("仿宋", Font.BOLD, 16));
		button_1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				//点击查找按钮，根据起止日期，查询库存信息
				int r = model.getRowCount();
				while(r>0)
				{
					model.removeRow(r-1);
					r--;
				}

				Object[] obj = new Object[4];
				SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");// 创建指定格式的当前时间
				ArrayList<Object[]> list = new OperationSqlData().getStockRecordByDate(df.format(spinner.getValue())+" "+"00:00:00", df.format(spinner_1.getValue())+" "+"23:59:59",1 , true);
				int row = list.size();
				float cost = 0;
				//显示到table
				for(int i=0; i<row; i++)
				{
					obj = list.get(i);
					model.addRow(new Object[5]);
					int j = model.getRowCount();
					model.setValueAt(obj[0], j-1, 0);
					model.setValueAt(obj[3], j-1, 1);
					model.setValueAt(obj[1], j-1, 2);
					model.setValueAt(obj[2], j-1, 3);
					cost = Float.parseFloat(obj[3].toString())/Float.parseFloat(obj[1].toString());
					cost =  (float)(Math.round(cost*100))/100;
					model.setValueAt(cost, j-1, 4);
				}
			}
		});
		button_1.setBounds((screenWidth-780)/2+30, (screenHeight-440)/2-20+70, 90, 20);
		frame.getContentPane().add(button_1);		
	   
		//定义两种加价方式按比例和固定值，基于日期区间库存成本定义销售价格
		JLabel lblNewLabel = new JLabel("统一按比例加价");
		lblNewLabel.setFont(new Font("仿宋", Font.BOLD, 14));
		lblNewLabel.setBounds((screenWidth-780)/2-20, (screenHeight-440)/2-20+190, 110, 20);
		frame.getContentPane().add(lblNewLabel);

		JLabel label_1 = new JLabel("%");
		label_1.setBounds((screenWidth-780)/2+150, (screenHeight-440)/2-20+190, 20, 20);
		frame.getContentPane().add(label_1);

		JLabel label_2 = new JLabel("统一按固定值加价");
		label_2.setFont(new Font("仿宋", Font.BOLD, 14));
		label_2.setBounds((screenWidth-780)/2-20, (screenHeight-440)/2-20+220, 120, 20);
		frame.getContentPane().add(label_2);

		JLabel label_3 = new JLabel("￥");
		label_3.setBounds((screenWidth-780)/2+150, (screenHeight-440)/2-20+220, 20, 20);
		frame.getContentPane().add(label_3);		

		textField = new JTextField();
		textField.setBounds((screenWidth-780)/2+105, (screenHeight-440)/2-20+190, 40, 20);
		frame.getContentPane().add(textField);
		textField.setColumns(10);		

		textField_1 = new JTextField();
		textField_1.setBounds((screenWidth-780)/2+105, (screenHeight-440)/2-20+220, 40, 20);
		frame.getContentPane().add(textField_1);
		textField_1.setColumns(10);

		JButton btnNewButton = new JButton("确定");
		btnNewButton.setFont(new Font("仿宋", Font.BOLD, 16));
		btnNewButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				//两种加价方式选其一
				if (!textField.getText().isEmpty() && !textField_1.getText().isEmpty())
				{
					JOptionPane.showMessageDialog(null, "加价方式（按比例/按固定值）二选一");
				    return;
				}
				
				else if(!textField.getText().isEmpty())
				{
					int row = 0;
					row = model.getRowCount();
                    for(int i=0; i<row; i++)
                    {
                    	//计算销售价格：成本*比例 保留两位小数的另一种方法
                    	float sales = Float.parseFloat(model.getValueAt(i, 4).toString())*(1+Float.parseFloat(textField.getText())/100);
                    	sales =  (float)(Math.round(sales*100))/100;
                    	model.setValueAt(sales, i, 5);
                    }
                         
				}
				
				else if(!textField_1.getText().isEmpty())
				{
                    int row;
                    row = model.getRowCount();
					for(int i=0; i<row; i++)
                    {
						//计算销售价格：成本+定值
                    	float sales = Float.parseFloat(model.getValueAt(i, 4).toString())+Float.parseFloat(textField_1.getText());
                    	sales =  (float)(Math.round(sales*100))/100;
                    	model.setValueAt(sales, i, 5);
                    }					
				}
				      
			}
		});
		btnNewButton.setBounds((screenWidth-780)/2+30, (screenHeight-440)/2-20+260, 90, 20);
		frame.getContentPane().add(btnNewButton);	

		JButton button = new JButton("提交");
		button.setFont(new Font("仿宋", Font.BOLD, 16));
		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				new OperationSqlData().CommitSalesStockPricingToSql(model, table);
			}
		});
		button.setBounds((screenWidth-780)/2+400, (screenHeight-440)/2+400, 90, 20);
		frame.getContentPane().add(button);
	}
}
 

 销售管理界面：
 
 
 
 
 
package org.screen;

import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.table.DefaultTableModel;
import javax.swing.JComboBox;
import javax.swing.JTextField;
import javax.swing.JTable;
import javax.swing.JScrollPane;
import java.awt.Font;
import javax.swing.SwingConstants;
import java.awt.event.KeyEvent;

public class sales_screen {

	// 定义SWT控件
	private JFrame frame;
	private JTextField textField;
	private JTextField textField_1;
	private JTextField textField_3;
	private JComboBox<String> comboBox;
	private JTable table_1;
	private DefaultTableModel model;
	private int m = 0;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					sales_screen window = new sales_screen(); // 新建销售窗口
					window.frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the application.
	 */
	public sales_screen() {
		initialize();
	}

	/**
	 * Initialize the contents of the frame.
	 */
	@SuppressWarnings("serial")
	private void initialize() {
		frame = new JFrame("销售管理"); // new一个fram容器
		// 自动设置销售管理窗口大小为用户屏幕的一半，切位于屏幕中央
		int screenWidth = java.awt.Toolkit.getDefaultToolkit().getScreenSize().width*2/3;
		int screenHeight = java.awt.Toolkit.getDefaultToolkit().getScreenSize().height*2/3;
		frame.setBounds(screenWidth/6, screenHeight/6, screenWidth, screenHeight);
		frame.getContentPane().setLayout(null);

		JLabel lblNewLabel = new JLabel("品名");// 设置品名label属性
		lblNewLabel.setFont(new Font("仿宋", Font.BOLD, 20));
		lblNewLabel.setBounds((screenWidth - 880) / 2, (screenHeight - 400) / 2+100, 50, 20);
		frame.getContentPane().add(lblNewLabel);

		JLabel lblNewLabel_1 = new JLabel("数量");// 设置单价label属性
		lblNewLabel_1.setFont(new Font("仿宋", Font.BOLD, 20));
		lblNewLabel_1.setBounds((screenWidth - 880) / 2, (screenHeight - 400) / 2+140 , 50, 20);
		frame.getContentPane().add(lblNewLabel_1);

		JLabel lblNewLabel_2 = new JLabel("单价");// 设置数量label属性
		lblNewLabel_2.setFont(new Font("仿宋", Font.BOLD, 20));
		lblNewLabel_2.setBounds((screenWidth - 880) / 2, (screenHeight - 400) / 2+180 , 50, 20);
		frame.getContentPane().add(lblNewLabel_2);
		
		textField_3 = new JTextField();
		textField_3.setHorizontalAlignment(SwingConstants.CENTER);
		textField_3.setEditable(false);
		textField_3.setBounds((screenWidth - 880) / 2 + 170, (screenHeight - 400) / 2 + 140, 60, 20);;
		frame.getContentPane().add(textField_3);
		textField_3.setColumns(10);		

		comboBox = new JComboBox<String>();// 设置combox品名输入属性
		new OperationSqlData().getGoodsNameToCombox(comboBox);
		comboBox.setBounds((screenWidth - 880) / 2 + 55, (screenHeight - 400) / 2 + 100, 180, 20);
		frame.getContentPane().add(comboBox);
		comboBox.setSelectedItem(null);
		comboBox.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				String unit = new OperationSqlData().getUnitByGoodsName(comboBox.getSelectedItem().toString());
				String sales_price = new OperationSqlData().getSalesPriceByGoodsName(comboBox.getSelectedItem().toString());	
				textField.setText(sales_price);
				textField_3.setText(unit);
				textField_1.setText(null);
			}
		});

		textField_1 = new JTextField();
		textField_1.setBounds((screenWidth - 880) / 2 + 55, (screenHeight - 400) / 2 + 140, 110, 20);
		frame.getContentPane().add(textField_1);
		textField_1.setColumns(10);

		textField = new JTextField();// 设置(数量)Field输入属性
		textField.setBounds((screenWidth - 880) / 2 + 55, (screenHeight - 400) / 2 + 180, 110, 20);
		frame.getContentPane().add(textField);
		textField.setColumns(10);

		JButton btnNewButton_2 = new JButton(">>");// 设置>>按钮属性及事件处理
		btnNewButton_2.setFont(new Font("仿宋", Font.BOLD, 16));
		btnNewButton_2.setBounds((screenWidth - 880) / 2 + 55, (screenHeight - 400) / 2 + 220, 60, 20);
		frame.getContentPane().add(btnNewButton_2);
		btnNewButton_2.addActionListener(new ActionListener() {
			// 将用户输入的数据，写入Jtable中，计算总金额
			public void actionPerformed(ActionEvent arg0) {
				m = model.getRowCount();
				for(int q=0; q<m; q++)
				{
					if(model.getValueAt(q, 0).toString().equals(comboBox.getSelectedItem().toString()))
					{
						JOptionPane.showMessageDialog(null, "重复加入购物车！");
					     return;
					}
				}
				if (comboBox.getSelectedItem().toString().isEmpty()||textField.getText().isEmpty()||textField_1.getText().isEmpty())
				{
					JOptionPane.showMessageDialog(null, "输入栏位不能为空！");
					return;
				}
				
				model.addRow(new Object[4]);
				model.setValueAt(comboBox.getSelectedItem(), m, 0);
				model.setValueAt(textField_1.getText(), m, 1);
				model.setValueAt(textField_3.getText(), m, 2);
				model.setValueAt(textField.getText(), m, 3);
				model.setValueAt((float)(Math.round(Float.parseFloat(textField.getText()) * Float.parseFloat(textField_1.getText())*100))/100, m, 4);
			}
		});		
		
		JButton btnNewButton = new JButton("提交");// 设置提交按钮属性及事件处理
		btnNewButton.setFont(new Font("仿宋", Font.BOLD, 16));
		btnNewButton.setMnemonic(KeyEvent.VK_ENTER);
		btnNewButton.setBounds((screenWidth - 880) / 2 + 450, (screenHeight - 400) / 2 + 390, 80, 20);
		frame.getContentPane().add(btnNewButton);
		btnNewButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				new OperationSqlData().CommitSalesToSql(model, table_1);
				int j = model.getRowCount();
				while(j>0)
				{
					model.removeRow(j-1);
					j--;
				}
			}
		});

		JButton btnNewButton_1 = new JButton("删除");// 设置删除按钮属性及事件处理
		btnNewButton_1.setFont(new Font("仿宋", Font.BOLD, 16));
		btnNewButton_1.setBounds((screenWidth - 880) / 2 + 580, (screenHeight - 400) / 2 + 390, 80, 20);
		frame.getContentPane().add(btnNewButton_1);
		btnNewButton_1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				int row = table_1.getSelectedRow();
				if (row >= 0) {
					model.removeRow(row);
				}
			}
		});

		// 依据model创建一个Jtable
		String[] header = { "品名", "数量", "单位", "单价", "总价" };// 设置表头
		Object[][] item = new Object[0][5];// 设置单身
		model = new DefaultTableModel(item, header) {
			public boolean isCellEditable(int row, int column) {
				return false;
			}
		};// 创建一个model，并设置model数据不可编辑
		table_1 = new JTable(model);// 根据model创建一个Jtable
		table_1.setFocusable(false);// 关闭鼠标选中单个坐标


		JScrollPane scrollPane = new JScrollPane(table_1);// 设置JScrollPane容器属性，将Jtable放入JScrollPane中，实现数据超出上下左右滚动条的功能
		scrollPane.setLocation((screenWidth - 880) / 2 + 250, (screenHeight - 440) / 2);
		scrollPane.setSize(600, 400);
		frame.getContentPane().add(scrollPane);
		
	}	
	
}
 

 报废界面：
 
 
 
 
 
package org.screen;

import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.JComboBox;
import java.awt.Font;
import javax.swing.SwingConstants;

import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.awt.event.ActionEvent;

public class waste_screen {
	private JFrame frame;
	private JComboBox<String> comboBox;
	private JTextField textField_1;
	private JTextField textField_2;
	private JButton btnNewButton;
	private JTextField textField_3;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					waste_screen window = new waste_screen();  //创建进货窗口界面
					window.frame.setVisible(true);  //设置窗口可见
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the application.
	 */
	public waste_screen() {
		initialize();
	}

	/**
	 * Initialize the contents of the frame.
	 */
	private void initialize() {
		frame = new JFrame("商品报废");  //new一个Jfram容器
		int screenWidth = java.awt.Toolkit.getDefaultToolkit().getScreenSize().width/2;  //根据用户屏幕，自动调整控件的显示位置
		int screenHeight = java.awt.Toolkit.getDefaultToolkit().getScreenSize().height/2;		
		frame.setBounds(screenWidth/2, screenHeight/2, screenWidth, screenHeight);
		frame.getContentPane().setLayout(null);
		
		JLabel lblNewLabel = new JLabel("品名");  //设置label控件属性，位置
		lblNewLabel.setFont(new Font("仿宋", Font.BOLD, 20));
		lblNewLabel.setBounds((screenWidth-180)/2, (screenHeight-140)/2, 50, 20);
		frame.getContentPane().add(lblNewLabel);
		
		JLabel lblNewLabel_1 = new JLabel("数量");  //设置label控件属性，位置
		lblNewLabel_1.setFont(new Font("仿宋", Font.BOLD, 20));
		lblNewLabel_1.setBounds((screenWidth-180)/2, (screenHeight-140)/2+40*1, 50, 20);
		frame.getContentPane().add(lblNewLabel_1);
		
		JLabel lblNewLabel_2 = new JLabel("成本");  //设置label控件属性，位置
		lblNewLabel_2.setFont(new Font("仿宋", Font.BOLD, 20));
		lblNewLabel_2.setBounds((screenWidth-180)/2, (screenHeight-140)/2+40*2, 50, 20);
		frame.getContentPane().add(lblNewLabel_2);
		
		comboBox = new JComboBox<String>();  //设置comboBox控件属性，位置
		new OperationSqlData().getGoodsNameToCombox(comboBox);
		comboBox.setSelectedItem(null);
		comboBox.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				//每次选择商品，先清空输入框，再抓取商品单位
				textField_1.setText(null);
				textField_2.setText(null);;
				textField_3.setText(null);				
				String unit = new OperationSqlData().getUnitByGoodsName(comboBox.getSelectedItem().toString());
				textField_3.setText(unit);
			}
		});
		comboBox.setBounds((screenWidth-180)/2+60, (screenHeight-140)/2, 180, 20);
		frame.getContentPane().add(comboBox);
		
		textField_1 = new JTextField(); //设置输入Field控件属性，位置
		textField_1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				if (comboBox.getSelectedIndex() >= 0)
				{
					//抓取报废商品的库存成本
					float price = new OperationSqlData().getStockCostByGoodsName(comboBox.getSelectedItem().toString());
					float t_price = Float.parseFloat(textField_1.getText())*price;
					//保留两位小数
					BigDecimal bd = new BigDecimal(t_price);
					bd = bd.setScale(2, RoundingMode.HALF_UP);
					textField_2.setText(bd.toString());
				}
			}
		});
		textField_1.setBounds((screenWidth-180)/2+60, (screenHeight-140)/2+40*1, 120, 20);
		frame.getContentPane().add(textField_1);
		textField_1.setColumns(10);
		
		textField_2 = new JTextField();
		textField_2.setEditable(false);
		textField_2.setBounds((screenWidth-180)/2+60, (screenHeight-140)/2+40*2, 120, 20);
		frame.getContentPane().add(textField_2);

		textField_3 = new JTextField();
		textField_3.setHorizontalAlignment(SwingConstants.CENTER);
		textField_3.setEditable(false);
		textField_3.setBounds((screenWidth-180)/2+190, (screenHeight-140)/2+40*1, 50, 20);
		frame.getContentPane().add(textField_3);
		textField_3.setColumns(10);		
		
		btnNewButton = new JButton("提交");  //设置提交按钮属性，位置和提交事件处理
		btnNewButton.setFont(new Font("仿宋", Font.BOLD, 16));
		btnNewButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				if (textField_1.getText().isEmpty()||comboBox.getSelectedIndex()<0) //检查商品名字段是否为空
				{
					   JOptionPane.showMessageDialog(null, "输入栏位不能为空！");
					   return;
				}
				
				if (textField_2.getText().isEmpty()) //检查商品名字段是否为空
				{
					   JOptionPane.showMessageDialog(null, "先按Enter查看报废成本！");
					   return;
				}				
				
				int ret =new OperationSqlData().StockIn(comboBox.getSelectedItem().toString(), "-"+textField_1.getText(), textField_3.getText(), "-"+textField_2.getText());
				if  (ret == 1)  //根据SQL返回值判断执行结果，并显示对话框
				{
					JOptionPane.showMessageDialog(null, "报废成功！");
				}
				else
				{
					JOptionPane.showMessageDialog(null, "报废失败！");
				}
									
			}
 				
		});
		btnNewButton.setBounds((screenWidth-180)/2+60, (screenHeight-140)/2+40*3, 120, 20);
		frame.getContentPane().add(btnNewButton);
	}
}
 

 报表部分：
 
 
 
 
 
package org.screen;

import java.awt.EventQueue;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

import javax.swing.JFrame;
import javax.swing.JTree;
import javax.swing.SpinnerDateModel;
import javax.swing.SpinnerModel;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.table.DefaultTableModel;
import javax.swing.JScrollPane;
import javax.swing.tree.DefaultTreeModel;

import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.JTable;
import javax.swing.JSpinner;
import javax.swing.JLabel;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPopupMenu;
import javax.swing.JRadioButton;
import java.awt.Font;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.ActionEvent;

public class report_screen {

	private JFrame frame;
	private JTable table;
	private JTree tree;
	private JScrollPane scrollPane;
	private JScrollPane scrollPane_1;
	private JSpinner spinner;
	private JSpinner spinner_1;	
	private JRadioButton checkBox;
	private String business;
	private DefaultTableModel model1;
	private DefaultTableModel model2;
	private DefaultTableModel model3;
	/**
	 * Launch the application.
	 */


	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					report_screen window = new report_screen();
					window.frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the application.
	 */
	public report_screen() {
		initialize();
	}

	/**
	 * Initialize the contents of the frame.
	 */
	@SuppressWarnings("serial")
	private void initialize() {
		frame = new JFrame();
		int screenWidth = java.awt.Toolkit.getDefaultToolkit().getScreenSize().width;
		int screenHeight = java.awt.Toolkit.getDefaultToolkit().getScreenSize().height;		
		frame.setBounds(0, 0, screenWidth, screenHeight);
		frame.getContentPane().setLayout(null);

		JLabel label = new JLabel("开始日期");
		label.setFont(new Font("仿宋", Font.BOLD, 16));
		label.setBounds(180, 20, 80, 20);
		frame.getContentPane().add(label);		

		JLabel label_1 = new JLabel("结束日期");
		label_1.setFont(new Font("仿宋", Font.BOLD, 16));
		label_1.setBounds(390, 20, 80, 20);
		frame.getContentPane().add(label_1);	

		checkBox = new JRadioButton("锁定日期");
		checkBox.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				//锁定后日期不可编辑
				if(checkBox.isSelected() == true)
				{
					spinner.setEnabled(false);
					spinner_1.setEnabled(false);
				}
				else{
					spinner.setEnabled(true);
					spinner_1.setEnabled(true);
				}
			}
		});
		checkBox.setFont(new Font("仿宋", Font.PLAIN, 16));
		checkBox.setBounds(600, 20, 100, 20);
		frame.getContentPane().add(checkBox);
		checkBox.setSelected(false);

		GregorianCalendar gc=new GregorianCalendar(); //当前日期的前一个月
		gc.setTime(new Date());
		gc.add(2, -1);		
		SpinnerModel dateModel=null;
		dateModel = new SpinnerDateModel(gc.getTime(), null, null,Calendar.DAY_OF_MONTH);
		spinner = new JSpinner();
		spinner.setFont(new Font("仿宋", Font.BOLD, 14));
		spinner.setBounds(270, 20, 105, 20);
		frame.getContentPane().add(spinner);
		spinner.setModel(dateModel);  
		spinner.setEditor(new JSpinner.DateEditor(spinner,"yyyy-MM-dd"));		

		SpinnerModel dateModel_1=null;
		dateModel_1 = new SpinnerDateModel(new Date(), null, null,Calendar.DAY_OF_MONTH);
		spinner_1 = new JSpinner();
		spinner_1.setFont(new Font("仿宋", Font.BOLD, 14));
		spinner_1.setBounds(480, 20, 105, 20);
		frame.getContentPane().add(spinner_1);
		spinner_1.setModel(dateModel_1);  
		spinner_1.setEditor(new JSpinner.DateEditor(spinner_1,"yyyy-MM-dd"));			

		//new一个树状导航，选择不同的报表种类
		tree = new JTree();
		tree.setShowsRootHandles(true);
		tree.setModel(new DefaultTreeModel(
				new DefaultMutableTreeNode("报表") {
					{
						DefaultMutableTreeNode node_1;
						node_1 = new DefaultMutableTreeNode("记录");
						node_1.add(new DefaultMutableTreeNode("进货记录"));					
						node_1.add(new DefaultMutableTreeNode("销售记录"));
						node_1.add(new DefaultMutableTreeNode("报废记录"));
						add(node_1);
						node_1 = new DefaultMutableTreeNode("库存");
						node_1.add(new DefaultMutableTreeNode("当前库存"));
						add(node_1);
						node_1 = new DefaultMutableTreeNode("利润");
						node_1.add(new DefaultMutableTreeNode("利润统计"));
						add(node_1);
					}
				}
				));
		tree.addTreeSelectionListener(new TreeSelectionListener() {

			@Override
			public void valueChanged(TreeSelectionEvent e) {
				DefaultMutableTreeNode node = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent();
				if(node == null)
					return;
				if (checkBox.isSelected()==false)  //日期锁定后允许执行报表
				{
					JOptionPane.showMessageDialog(null, "请首先锁定日期");
					return;	
				}

				Object select_node = node.getUserObject();
				SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");// 创建指定格式的当前时间

				switch (select_node.toString()) {
				case "进货记录": //根据日期抓取进货记录
					String[] header1 = { "日期", "品名", "进货数量", "单位", "进货单价", "进货总价"};// 设置表头
					Object[][] item1 = new Object[0][6];// 设置单身
					model1 = new DefaultTableModel(item1, header1) {
						public boolean isCellEditable(int row, int column) {
							return false;
						}
					};// 创建一个model，并设置model数据不可编辑
					table = new JTable(model1);// 根据model创建一个Jtable
					table.setFocusable(false);// 关闭鼠标选中单个坐标	
					scrollPane_1.setViewportView(table);

					int r1 = model1.getRowCount();
					while(r1>0)
					{
						model1.removeRow(r1-1);
						r1--;
					}

					Object[] obj1 = new Object[6];
					ArrayList<Object[]> list1 = new OperationSqlData().getStockRecordByDate(df.format(spinner.getValue())+" "+"00:00:00", df.format(spinner_1.getValue())+" "+"23:59:59",0 , false);
					int row1 = list1.size();
					float cost = 0;
					for(int i=0; i<row1; i++)
					{
						obj1 = list1.get(i);
						model1.addRow(new Object[6]);
						int j = model1.getRowCount();
						model1.setValueAt(obj1[0], j-1, 0);
						model1.setValueAt(obj1[1], j-1, 1);
						model1.setValueAt(obj1[2], j-1, 2);
						model1.setValueAt(obj1[3], j-1, 3);
						cost = Float.parseFloat(obj1[4].toString())/Float.parseFloat(obj1[2].toString());
						cost = (float)(Math.round(cost*100))/100;
						model1.setValueAt(cost, j-1, 4);
						model1.setValueAt(obj1[4], j-1, 5);
					}	
					business = "stock";
					reportMouseClick();
					break;
				case "销售记录"://根据日期抓取销售记录			
					String[] header2 = { "日期", "品名", "销售数量", "单位", "销售单价", "销售总价"};// 设置表头
					Object[][] item2 = new Object[0][6];// 设置单身
					model2 = new DefaultTableModel(item2, header2) {
						public boolean isCellEditable(int row, int column) {
							return false;
						}
					};// 创建一个model，并设置model数据不可编辑
					table = new JTable(model2);// 根据model创建一个Jtable
					table.setFocusable(false);// 关闭鼠标选中单个坐标	
					scrollPane_1.setViewportView(table);

					int r2 = model2.getRowCount();
					while(r2>0)
					{
						model2.removeRow(r2-1);
						r2--;
					}

					Object[] obj2 = new Object[6];
					ArrayList<Object[]> list2 = new OperationSqlData().getSalesRecordByDate(df.format(spinner.getValue())+" "+"00:00:00", df.format(spinner_1.getValue())+" "+"23:59:59", false);
					int row2 = list2.size();
					for(int i=0; i<row2; i++)
					{
						obj2 = list2.get(i);
						model2.addRow(new Object[6]);
						int j = model2.getRowCount();
						model2.setValueAt(obj2[0], j-1, 0);
						model2.setValueAt(obj2[1], j-1, 1);
						model2.setValueAt(obj2[2], j-1, 2);
						model2.setValueAt(obj2[3], j-1, 3);
						model2.setValueAt(obj2[4], j-1, 4);
						model2.setValueAt(obj2[5], j-1, 5);
					}
					business = "sales";
					reportMouseClick();
					break;
				case "报废记录": //根据日期抓取报废记录
					String[] header3 = { "日期", "品名", "报废数量", "单位", "成本单价", "报废总成本"};// 设置表头
					Object[][] item3 = new Object[0][6];// 设置单身
					model3 = new DefaultTableModel(item3, header3) {
						public boolean isCellEditable(int row, int column) {
							return false;
						}
					};// 创建一个model，并设置model数据不可编辑
					table = new JTable(model3);// 根据model创建一个Jtable
					table.setFocusable(false);// 关闭鼠标选中单个坐标	
					scrollPane_1.setViewportView(table);

					int r3 = model3.getRowCount();
					while(r3>0)
					{
						model3.removeRow(r3-1);
						r3--;
					}

					Object[] obj3 = new Object[6];
					ArrayList<Object[]> list3 = new OperationSqlData().getStockRecordByDate(df.format(spinner.getValue())+" "+"00:00:00", df.format(spinner_1.getValue())+" "+"23:59:59",-1 , false);
					int row3 = list3.size();
					float cost1 = 0;
					for(int i=0; i<row3; i++)
					{
						obj3 = list3.get(i);
						model3.addRow(new Object[6]);
						int j = model3.getRowCount();
						model3.setValueAt(obj3[0], j-1, 0);
						model3.setValueAt(obj3[1], j-1, 1);
						model3.setValueAt(obj3[2], j-1, 2);
						model3.setValueAt(obj3[3], j-1, 3);
						cost1 = Float.parseFloat(obj3[4].toString())/Float.parseFloat(obj3[2].toString());
						model3.setValueAt(cost1, j-1, 4);
						model3.setValueAt(obj3[4], j-1, 5);
					}
					business = "stock_waste";
					reportMouseClick();
					break;
				case "当前库存":  //根据日期抓取进货报废和销售记录，计算当前库存
					String[] header4 = {"品名", "库存数量", "单位"};// 设置表头
					Object[][] item4 = new Object[0][3];// 设置单身
					DefaultTableModel model4 = new DefaultTableModel(item4, header4) {
						public boolean isCellEditable(int row, int column) {
							return false;
						}
					};// 创建一个model，并设置model数据不可编辑
					table = new JTable(model4);// 根据model创建一个Jtable
					table.setFocusable(false);// 关闭鼠标选中单个坐标	
					scrollPane_1.setViewportView(table);

					int r4 = model4.getRowCount();
					while(r4>0)
					{
						model4.removeRow(r4-1);
						r4--;
					}

					Object[] obj4 = new Object[6];
					Object[] obj4_sales = new Object[4];
					ArrayList<Object[]> list4 = new OperationSqlData().getStockRecordByDate(df.format(spinner.getValue())+" "+"00:00:00", df.format(spinner_1.getValue())+" "+"23:59:59",0 , true);
					ArrayList<Object[]> list4_sales = new OperationSqlData().getSalesRecordByDate("0000-00-00 00:00:00", "9999-99-99 99:99:99", true);
					int row4 = list4.size();
					int row4_sales = list4_sales.size();
					float stock_last = 0;
					for(int i=0; i<row4; i++)
					{
						model4.addRow(new Object[3]);
						int j = model4.getRowCount();
						obj4 = list4.get(i);

						for (int k=0; k<row4_sales; k++)
						{
							obj4_sales = list4_sales.get(k);
							if (obj4_sales[0].toString().equals(obj4[0].toString()))
							{
								stock_last = Float.parseFloat(obj4[1].toString()) - Float.parseFloat(obj4_sales[1].toString());
								model4.setValueAt(stock_last, j-1, 1);
								break;
							}
							else 
							{
								model4.setValueAt(obj4[1], j-1, 1);
							}	
						}

						if (row4_sales == 0)
							model4.setValueAt(obj4[1], j-1, 1);
						model4.setValueAt(obj4[0], j-1, 0);
						model4.setValueAt(obj4[2], j-1, 2);
					}						

					break;
				case "利润统计": //根据销售利润 报废成本 统计最终净利润
					String[] header5 = { "品名", "销售数量","报废数量","单位", "平均销售单价", "库存成本单价", "销售利润", "报废成本","净利润"};// 设置表头
					Object[][] item5 = new Object[0][9];// 设置单身
					DefaultTableModel model5 = new DefaultTableModel(item5, header5) {
						public boolean isCellEditable(int row, int column) {
							return false;
						}
					};// 创建一个model，并设置model数据不可编辑
					table = new JTable(model5);// 根据model创建一个Jtable
					table.setFocusable(false);// 关闭鼠标选中单个坐标	
					scrollPane_1.setViewportView(table);	
					int r5 = model5.getRowCount();
					while(r5>0)
					{
						model5.removeRow(r5-1);
						r5--;
					}

					Object[] obj5_sales = new Object[4];
					Object[] obj5_waste = new Object[9];
					Object[] obj5 = new Object[9];
					ArrayList<Object[]> list5_sales = new OperationSqlData().getSalesRecordByDate(df.format(spinner.getValue())+" "+"00:00:00", df.format(spinner_1.getValue())+" "+"23:59:59", true);
					ArrayList<Object[]> list5_waste = new OperationSqlData().getStockRecordByDate(df.format(spinner.getValue())+" "+"00:00:00", df.format(spinner_1.getValue())+" "+"23:59:59", -1, true);

					int row5_sales = list5_sales.size();
					int row5_waste = list5_waste.size();

					for (int i=0; i<row5_sales; i++)
					{
						obj5_sales = list5_sales.get(i);
						float price = new OperationSqlData().getStockCostByGoodsName(obj5_sales[0].toString());
						price =  (float)(Math.round(price*100))/100;
						obj5[0] = obj5_sales[0];
						obj5[1] = obj5_sales[1];
						obj5[2] = 0.00;
						obj5[3] = obj5_sales[2];
						obj5[4] =  (float)(Math.round((Float.parseFloat(obj5_sales[3].toString())/Float.parseFloat(obj5_sales[1].toString()))*100))/100;				
						obj5[5] = price;
						obj5[6] = new BigDecimal(Float.parseFloat(obj5[1].toString())*(Float.parseFloat(obj5[4].toString())-price)).setScale(2, RoundingMode.HALF_UP);
						obj5[7] = 0.00;
						obj5[8] = obj5[6];
						for (int j=0; j<row5_waste; j++)
						{
							obj5_waste = list5_waste.get(j);
							if (obj5_waste[0].equals(obj5_sales[0]))
							{
								obj5[2] = obj5_waste[1];
								obj5[7] = obj5_waste[3];
								obj5[8] =  new BigDecimal(Float.parseFloat(obj5[6].toString()) + Float.parseFloat(obj5[7].toString())).setScale(2, RoundingMode.HALF_UP);
								list5_waste.remove(j);
								row5_waste =  row5_waste - 1;
								break;
							}
						}	

						model5.addRow(new Object[9]);
						int m = model5.getRowCount();
						model5.setValueAt(obj5[0], m-1, 0);
						model5.setValueAt(obj5[1], m-1, 1);
						model5.setValueAt(obj5[2], m-1, 2);					
						model5.setValueAt(obj5[3], m-1, 3);
						model5.setValueAt(obj5[4], m-1, 4);
						model5.setValueAt(obj5[5], m-1, 5);	
						model5.setValueAt(obj5[6], m-1, 6);					
						model5.setValueAt(obj5[7], m-1, 7);
						model5.setValueAt(obj5[8], m-1, 8);							
					}

					if (row5_waste > 0)
					{
						for(int k=0; k<row5_waste; k++)
						{
							obj5_waste = list5_waste.get(k);	
							obj5[0] = obj5_waste[0];
							obj5[1] = 0.00;
							obj5[2] = obj5_waste[1];
							obj5[3] = obj5_waste[2];
							obj5[4] = 0.00;
							float price = new OperationSqlData().getStockCostByGoodsName(obj5_waste[0].toString());
							price = (float)(Math.round(price*100))/100;
							obj5[5] = price;
							obj5[6] = 0.0;
							obj5[7] = obj5_waste[3];
							obj5[8] = Float.parseFloat(obj5_waste[3].toString());

							model5.addRow(new Object[9]);
							int m = model5.getRowCount();
							model5.setValueAt(obj5[0], m-1, 0);
							model5.setValueAt(obj5[1], m-1, 1);
							model5.setValueAt(obj5[2], m-1, 2);					
							model5.setValueAt(obj5[3], m-1, 3);
							model5.setValueAt(obj5[4], m-1, 4);
							model5.setValueAt(obj5[5], m-1, 5);	
							model5.setValueAt(obj5[6], m-1, 6);					
							model5.setValueAt(obj5[7], m-1, 7);
							model5.setValueAt(obj5[8], m-1, 8);					
						}
					}
					//最后一行插入利润总计
					int row_last = model5.getRowCount();
					float sales_bft = 0;
					float stock_cost = 0;
					float last_bft = 0;
					for(int p=0; p<row_last; p++)
					{
						if (!(model5.getValueAt(p, 6)==null))
						{
							sales_bft =  sales_bft + Float.parseFloat(model5.getValueAt(p, 6).toString());
						}
						if (!(model5.getValueAt(p, 7)==null))
						{
							stock_cost = stock_cost + Float.parseFloat(model5.getValueAt(p, 7).toString());
						}
						if (!(model5.getValueAt(p, 8)==null))
						{
							last_bft = last_bft + Float.parseFloat(model5.getValueAt(p, 8).toString());
						}
					}
					sales_bft = (float)(Math.round(sales_bft*100))/100;
					stock_cost = (float)(Math.round(stock_cost*100))/100;
					last_bft = (float)(Math.round(last_bft*100))/100;


					model5.addRow(new Object[9]);
					model5.setValueAt("总计", row_last, 0);
					model5.setValueAt(sales_bft, row_last, 6);
					model5.setValueAt(stock_cost, row_last, 7);
					model5.setValueAt(last_bft, row_last, 8);
					break;					
				default:
					break;
				}
			}
		});

		scrollPane = new JScrollPane();
		scrollPane.setViewportView(tree);
		scrollPane.setBounds(10, 10, 160, screenHeight-10);
		frame.getContentPane().add(scrollPane);		

		scrollPane_1 = new JScrollPane();
		scrollPane_1.setBounds(180, 50, screenWidth-200, screenHeight-50);
		frame.getContentPane().add(scrollPane_1);
	}

	class PopupActionListener implements ActionListener {
		public void actionPerformed(ActionEvent event) {
			int answer = JOptionPane.showConfirmDialog(null,  "删除数据不加入报表计算，确定要删除选中记录？", "提交信息",JOptionPane.YES_NO_OPTION);
			if (answer == 0)
			{
				int ret = 0;
				if (business.equals("stock"))
				{
					ret = new OperationSqlData().DeleteSqlDataByGoodsNameDate(model1.getValueAt(table.getSelectedRow(), 1).toString(), model1.getValueAt(table.getSelectedRow(), 0).toString(), "stock");
					model1.removeRow(table.getSelectedRow());
				}
				else if(business.equals("sales"))
				{
					ret = new OperationSqlData().DeleteSqlDataByGoodsNameDate(model2.getValueAt(table.getSelectedRow(), 1).toString(), model2.getValueAt(table.getSelectedRow(), 0).toString(), "sales");
					model2.removeRow(table.getSelectedRow());				
				}
				else if (business.equals("stock_waste"))
				{
					ret = new OperationSqlData().DeleteSqlDataByGoodsNameDate(model3.getValueAt(table.getSelectedRow(), 1).toString(), model3.getValueAt(table.getSelectedRow(), 0).toString(), "stock");	
					model3.removeRow(table.getSelectedRow());
				}

				if (ret == 1)
					JOptionPane.showMessageDialog(null, "删除成功");
				else
					JOptionPane.showMessageDialog(null, "删除失败"); 
			}
		}
	}	

	ActionListener acitonListener = new PopupActionListener();   


	public void reportMouseClick()  //右键提供指定行区域删除选项，处理选项事件
	{
		final JPopupMenu jp = new JPopupMenu();
		final JMenuItem item = jp.add("删除该条记录");
		item.addActionListener(acitonListener);

		table.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
				if (e.getButton() == MouseEvent.BUTTON3) {
					// 弹出菜单
					if(table.getSelectedRow() > -1)
					{
						int y = table.getSelectedRow() * table.getRowHeight();
						if(e.getY() > y && e.getY() <= y+16)
						{
							jp.show(table, e.getX(), e.getY());
						}
					}
				}
			}
		});  
	}
}
 
 
 

 最后是数据库操作部分：
 
 
 
 
 
 
 
package org.screen;

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;

import javax.swing.JComboBox;
import javax.swing.JOptionPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;

public class OperationSqlData {
	//定义数据库变量	
	private String  url;
	private String passname;
	private String password;
	private String driver;
	private Statement st;
	private Connection con;
	private ResultSet rst;	

	public OperationSqlData()  //构造数据库链接默认值
	{
		passname = "admin";  //SQL Server登陆账号
		password = "init1234";	//SQL Server登陆密码
		driver = "com.microsoft.sqlserver.jdbc.SQLServerDriver"; //驱动加载
		try {
			Class.forName(driver);

		} catch (ClassNotFoundException e) {
			JOptionPane.showMessageDialog(null, "数据库加载失败！");
			e.printStackTrace();
		}
		try {
			url = "jdbc:sqlserver://"+InetAddress.getLocalHost().getHostAddress()+";"+"DatabaseName=goodsData";//URL链接
		} catch (UnknownHostException e) {
			JOptionPane.showMessageDialog(null, "数据库加载失败！");
			e.printStackTrace();
		}	
	}

	public OperationSqlData(String p_name, String p_word)  //构造指定帐号密码数据库链接
	{
		passname = p_name; 
		password = p_word;
		driver = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
		try {
			Class.forName(driver);

		} catch (ClassNotFoundException e) {
			JOptionPane.showMessageDialog(null, "数据库加载失败！");
			e.printStackTrace();
		}
		try {
			url = "jdbc:sqlserver://"+InetAddress.getLocalHost().getHostAddress()+";"+"DatabaseName=goodsData";
		} catch (UnknownHostException e) {
			JOptionPane.showMessageDialog(null, "数据库加载失败！");
			e.printStackTrace();
		}		
	}

	public void getGoodsNameToCombox(JComboBox<String> combox)
	{
		String sql = "SELECT distinct goods FROM stock where qty > 0";// 数据库取品名
		// 连接数据库，执行查询语句
		try {
			con = DriverManager.getConnection(url, passname, password);
			con.setAutoCommit(true);
			st = con.createStatement();
			rst = st.executeQuery(sql);
			// 取出的结果加入combox的Item
			while (rst.next()) {
				combox.addItem(rst.getString("goods"));
			}

			// 关闭数据库连接
			rst.close();
			st.close();
			con.close();
		} catch (SQLException e) {
			JOptionPane.showMessageDialog(null, "商品名数据加载异常！ ");
			e.printStackTrace();
		}	   
	}

	public String getUnitByGoodsName(String goods) {
		String unit = null;
		//从库存表抓取商品单位
		String sql = "SELECT distinct unit FROM stock WHERE qty> 0 AND goods = ?";
		try {
			con = DriverManager.getConnection(url, passname, password);
			con.setAutoCommit(true);
			PreparedStatement ps = con.prepareStatement(sql);  //SQL预处理
			ps.setString(1, goods); //SQL参数
			ResultSet rt = ps.executeQuery();  //执行SQL
			while(rt.next())
			{
				unit = rt.getString("unit");  //从执行结果中得到商品单位
			}
			// 关闭数据库连接
			ps.close();
			rt.close();
			con.close();		
		} catch (SQLException e) {
			JOptionPane.showMessageDialog(null, "商品单位数据加载异常！ ");
			e.printStackTrace();
		}
		return unit;   //返回单位
	}

	public String getSalesPriceByGoodsName(String goods)
	{
		String sales_price = null;
		//从定价表中抓取销售单价
		String sql = "SELECT unitprice FROM Price WHERE goods = ?";

		try {
			con = DriverManager.getConnection(url, passname, password);
			con.setAutoCommit(true);
			PreparedStatement ps = con.prepareStatement(sql);// SQL预处理
			ps.setString(1, goods);
			ResultSet rt = ps.executeQuery();
			while(rt.next())
			{
				sales_price = rt.getString("unitprice");
			}
			// 关闭数据库连接
			ps.close();
			rt.close();
			con.close();		
		} catch (SQLException e) {
			JOptionPane.showMessageDialog(null, "销售单价数据加载异常！ ");
			e.printStackTrace();
		}		
		return sales_price;
	}

	public ArrayList<Object[]> getSalesRecordByDate(String date_begin, String date_end, Boolean sum_qty_totalprice)
	{
		ArrayList<Object[]> list = new ArrayList<Object[]>(); 
		String sql = null;
		if (sum_qty_totalprice)
		{   
			sql = "SELECT goods, SUM(qty) AS s_qty, unit, SUM(totalprice) AS s_totalprice FROM sales where date between ? AND ? GROUP BY goods, unit";//抓取销售记录数据按商品名和单位汇总
		}
		else{
			sql = "SELECT date, goods, qty, unit, unitprice, totalprice FROM sales where date between ? AND ? ORDER BY date DESC";//抓取销售记录数据按时间排序
		}
		try {
			con = DriverManager.getConnection(url, passname, password);
			con.setAutoCommit(true);
			PreparedStatement ps = con.prepareStatement(sql);// SQL预处理
			ps.setString(1, date_begin);  //指定抓取销售记录起始时间
			ps.setString(2, date_end);  //指定抓取销售记录终止时间
			ResultSet rt = ps.executeQuery();
			Object[] obj = null;

			if (sum_qty_totalprice)
			{
				while(rt.next())
				{
					obj = new Object[4];//Object数组加入arraylist
					obj[0] = rt.getString("goods");
					obj[1] = rt.getFloat("s_qty");
					obj[2] = rt.getString("unit");
					obj[3] = rt.getFloat("s_totalprice");
					list.add(obj);
				}				
			}
			else{
				while(rt.next())
				{
					obj = new Object[6];
					obj[0] = rt.getString("date");
					obj[1] = rt.getString("goods");
					obj[2] = rt.getFloat("qty");
					obj[3] = rt.getString("unit");
					obj[4] = rt.getFloat("unitprice");
					obj[5] = rt.getFloat("totalprice");
					list.add(obj);
				}
			}

			// 关闭数据库连接
			ps.close();
			rt.close();
			con.close();
		} catch (SQLException e) {
			JOptionPane.showMessageDialog(null, "销售记录数据加载异常！ ");
			e.printStackTrace();                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
		}

		return list; 
	}	

	public float getStockCostByGoodsName(String goods)
	{
		float stock_cost = 0;
		//  这里计算的是商品进货成本（qty>0）
		String sql = "SELECT goods,SUM(qty) AS s_qty,SUM(amount) AS s_amount FROM stock WHERE goods = ? AND qty>0 GROUP by goods";
		try {
			con = DriverManager.getConnection(url, passname, password);
			con.setAutoCommit(true);
			PreparedStatement ps = con.prepareStatement(sql);// SQL预处理
			ps.setString(1, goods);
			ResultSet rt = ps.executeQuery();
			while(rt.next())
			{
				float s_amount = rt.getFloat("s_amount");
				float s_qty = rt.getFloat("s_qty");
				stock_cost = s_amount/s_qty;
			}
			// 关闭数据库连接
			ps.close();
			rt.close();
			con.close();
		} catch (SQLException e) {
			JOptionPane.showMessageDialog(null, "成本数据加载异常！ ");
			e.printStackTrace();                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
		}

		return stock_cost;
	}		

	public ArrayList<Object[]> getStockRecordByDate(String date_begin, String date_end, int status, Boolean sum_amount_qty)
	{
		ArrayList<Object[]> list = new ArrayList<Object[]>();
		String sql = null;
		//sun_amount_qty是否根据商品名和单位加总库存数量和成本，
		//status的值： -1计算报废库存；0计算总库存； 1计算进货库存
		if (sum_amount_qty)
		{
			if (status == -1)  
				sql = "SELECT goods, SUM(qty) AS s_qty, unit, SUM(amount) AS s_amount FROM stock where qty < 0 AND date between ? AND ? GROUP by goods,unit";
			else if (status == 1)
				sql = "SELECT goods, SUM(qty) AS s_qty, unit, SUM(amount) AS s_amount FROM stock where qty > 0 AND date between ? AND ? GROUP by goods,unit";
			else if (status == 0)
				sql = "SELECT goods, SUM(qty) AS s_qty, unit, SUM(amount) AS s_amount FROM stock where date between ? AND ? GROUP by goods,unit";
		}
		else {
			if(status == -1)
				sql = "SELECT date, goods, qty, unit, amount FROM stock where qty < 0 AND date between ? AND ? ORDER BY date DESC";	
			else
				sql = "SELECT date, goods, qty, unit, amount FROM stock where qty > 0 AND date between ? AND ? ORDER BY date DESC";
		}
		try {
			con = DriverManager.getConnection(url, passname, password);
			con.setAutoCommit(true);
			PreparedStatement ps = con.prepareStatement(sql);// SQL预处理
			ps.setString(1, date_begin);
			ps.setString(2, date_end);
			ResultSet rt = ps.executeQuery();
			Object[] obj = null;
			if (sum_amount_qty)  //依据是否汇总处理输出结果
			{
				while(rt.next())
				{
					obj = new Object[4];
					obj[0] = rt.getString("goods");
					obj[1] = rt.getFloat("s_qty");
					obj[2] = rt.getString("unit");
					obj[3] = rt.getFloat("s_amount");
					list.add(obj);
				}
			}
			else {
				while(rt.next())
				{
					obj = new Object[5];
					obj[0] = rt.getString("date");
					obj[1] = rt.getString("goods");
					obj[2] = rt.getFloat("qty");
					obj[3] = rt.getString("unit");
					obj[4] = rt.getFloat("amount");
					list.add(obj);
				}				
			}
			// 关闭数据库连接
			ps.close();
			rt.close();
			con.close();
		} catch (SQLException e) {
			JOptionPane.showMessageDialog(null, "库存数据加载异常！ ");
			e.printStackTrace();                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
		}

		return list;
	}	

	public void CommitSalesStockPricingToSql(DefaultTableModel model, JTable table)  //传入用model定义的table
	{
		//这里先删除原有定价记录，再插入新纪录
		String sql1 = "DELETE FROM price WHERE goods = ? ";
		String sql2 = "INSERT INTO price (goods, unit, cost, unitprice) VALUES(?,?,?,?)";

		try {
			// 设置数据库链接，设置手动提交数据
			con = DriverManager.getConnection(url, passname, password);
			con.setAutoCommit(false);

			PreparedStatement ps1 = con.prepareStatement(sql1);// SQL预处理
			PreparedStatement ps2 = con.prepareStatement(sql2);// SQL预处理

			int line = table.getRowCount();
			// 循环每一行，如果有值加入数据库批处理
			for (int i = 0; i < line; i++) {
				if(!(model.getValueAt(i, 5)==null))  //首先判断是否有输入值，再判断是否为空值，有值则删除
				{
					if (!(model.getValueAt(i, 5).toString().isEmpty()))
					{
						ps1.setString(1, (String) model.getValueAt(i, 0));
						ps1.addBatch();

						ps2.setString(1, (String) model.getValueAt(i, 0));
						ps2.setString(2, (String) model.getValueAt(i, 3));
						ps2.setString(3, model.getValueAt(i, 4).toString());
						ps2.setString(4, model.getValueAt(i, 5).toString());
						ps2.addBatch();						
					}
				}
			}

			ps1.executeBatch();// 执行批处理，弹出对话消息，显示成功失败
			con.commit();
			//关闭数据库相关链接
			ps1.close();

			int[] rt = ps2.executeBatch();// 执行批处理，弹出对话消息，显示成功失败
			con.commit();
			if (rt.length > 0)
				JOptionPane.showMessageDialog(null, "提交成功！");
			ps2.close();
			con.close();
		} catch (SQLException e) {
			JOptionPane.showMessageDialog(null, "提交失败！ ");
			try {
				con.rollback();
			} catch (SQLException e1) {
				e1.printStackTrace();
			}
			e.printStackTrace();
		}
	}	

	public Integer StockIn(String name, String qty, String unit, String amount)
	{

		int ret = 0;
		String sql = "INSERT INTO stock (goods, date, qty, unit, amount) VALUES (?, ?, ?, ?, ?)"; // 定义SQL语句

		try {
			con = DriverManager.getConnection(url, passname, password);
			con.setAutoCommit(true); // 设置数据自动提交数据库

			PreparedStatement ps = con.prepareStatement(sql); // SQL预处理
			ps.setString(1, name);// 动态参数执行SQL
			SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 创建指定格式的当前时间
			ps.setString(2, df.format(new Date()));
			ps.setString(3, qty);
			ps.setString(4, unit);
			ps.setString(5, amount);
			ret = ps.executeUpdate(); // 执行SQL
			ps.close(); //关闭数据库链接
			con.close();
			return ret;
		} catch (SQLException e) {
			e.printStackTrace();
			return ret;
		}
	}	

	public void CommitSalesToSql(DefaultTableModel model, JTable table)
	{
		//  插入销售记录到数据库
		String sql = "INSERT INTO sales (goods, date, qty, unit, unitprice, totalprice) VALUES (?, ?, ?, ?, ?, ?)";// 批量插入Jtable中数据

		try {
			// 设置数据库链接，设置手动提交数据
			con = DriverManager.getConnection(url, passname, password);
			con.setAutoCommit(false);

			PreparedStatement ps = con.prepareStatement(sql);// SQL预处理

			SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 设置指定格式的当前日期时间
			String date = df.format(new Date());
			float f4 = 0;
			int line = table.getRowCount();
			// 循环每一行，如果有值加入数据库批处理
			for (int i = 0; i < line; i++) {
				if ((String) model.getValueAt(i, 0) != null) {
					ps.setString(1, (String) model.getValueAt(i, 0));
					ps.setString(2, date);
					float f1 = Float.parseFloat(model.getValueAt(i, 1).toString());
					ps.setFloat(3, f1);
					ps.setString(4, (String)model.getValueAt(i, 2));
					float f2 = Float.parseFloat(model.getValueAt(i, 3).toString());
					ps.setFloat(5, f2);
					float f3 = Float.parseFloat(model.getValueAt(i, 4).toString());
					ps.setFloat(6, f3);
					ps.addBatch();
					f4 = f3 + f4;
				}
			}
			
			f4 = (float)(Math.round(f4*100))/100;

			// 弹出选择对话框，计算总金额，提示是否提交
			int answer = JOptionPane.showConfirmDialog(null, "总金额" + f4 + "元" + " " + "确认提交？", "提交信息",
					JOptionPane.YES_NO_OPTION);
			if (answer == 0) {
				int rst[] = ps.executeBatch();// 执行批处理，弹出对话消息，显示成功失败
				if (rst.length > 0) {
					JOptionPane.showMessageDialog(null, "交易成功");
					con.commit();		
				}
				else if(rst.length == 0)
				{
					JOptionPane.showMessageDialog(null, "无数据");
				}
			}
			//关闭数据库相关链接
			ps.close();
			con.close();
		} catch (SQLException e) {
			JOptionPane.showMessageDialog(null, "交易失败");
			try {
				con.rollback();
				con.close();
			} catch (SQLException e1) {
				e1.printStackTrace();
			}
			e.printStackTrace();
		}

	}	
	
	  public Integer DeleteSqlDataByGoodsNameDate(String goods, String date, String business)
	  {
		  String sql = null;
		  int ret = 0;
		  if(business.equals("stock")||business.equals("stock_waste"))
			sql = "DELETE FROM stock where goods = ? AND date = ?";
		  else if (business.equals("sales"))
		    sql = "DELETE FROM sales where goods = ? AND date = ?";
			
		  
			// 连接数据库，执行查询语句
			try {
				con = DriverManager.getConnection(url, passname,password);
				con.setAutoCommit(false); // 设置数据自动提交数据库

				PreparedStatement ps = con.prepareStatement(sql); // SQL预处理
				ps.setString(1, goods);
				ps.setString(2, date);
				ret = ps.executeUpdate(); // 执行SQL
				con.commit();
				ps.close(); //关闭数据库链接
				con.close();
				return ret;
			} catch (SQLException e) {
				try {
					con.rollback();
				} catch (SQLException e1) {
					e1.printStackTrace();
				}
				e.printStackTrace();
				return ret;
			} 	
	  }	
	  
	  public void DeleteSqlDataByYear(String date_last)//清理数据库旧记录
	  {
		  String sql1 = "DELETE FROM stock where date < ?";
		  String sql2 = "DELETE FROM sales where date  < ?";

			int answer = JOptionPane.showConfirmDialog(null, "确认要删除"+date_last+"之前的数据？ ", "提交信息",
					JOptionPane.YES_NO_OPTION);
			if (answer != 0) {
                return;
			}		  
		  
			// 连接数据库，执行查询语句
			try {
				con = DriverManager.getConnection(url, passname,password);
				con.setAutoCommit(false); // 设置数据不自动提交数据库

				PreparedStatement ps1 = con.prepareStatement(sql1); // SQL预处理
				ps1.setString(1, date_last);
				ps1.executeUpdate(); // 执行SQL
				PreparedStatement ps2 = con.prepareStatement(sql2); // SQL预处理
				ps2.setString(1, date_last);
				ps2.executeUpdate(); // 执行SQL
				con.commit();
				ps1.close(); //关闭数据库链接
				ps2.close();
				con.close();
				JOptionPane.showMessageDialog(null, "清除数据成功！");
				
			} catch (SQLException e) {
				try {
					con.rollback(); //失败回滚
				} catch (SQLException e1) {
					e1.printStackTrace();
				}
				JOptionPane.showMessageDialog(null, "清除数据失败");
				e.printStackTrace();
			} 	
	  }		  
}