isSameFile判断是否有重名文件，QString fullfilepath需要使用全路径。
bool isSameFile(QString fullfilepath)
{
	std::fstream myfile;
	char* ch; 
	QByteArray ba = fullfilepath. toLocal8Bit(); 
	ch=ba.data();
	myfile.open(ch, std::ios::in);
	if (myfile)
		return true;
	else
		return false;
}

以pdf文件为例，解析出文件名，并进行重组，以（1）（2）（3）为标识累加。
void dealSameFileName(QString& filename)
{
	if (isSameFile(filename))
	{
		QStringList namelist = filename.split(".pdf");
		QString singlefilename = namelist[namelist.size() - 2];
		int i = 1;
		QString extractfilename = singlefilename +  QString(tr("(")) + QString::number(i, 10) +  QString(tr(")")) + QString(tr(".pdf"));
		while (isSameFile(extractfilename))
		{
			i++;
			extractfilename = singlefilename +  QString(tr("(")) + QString::number(i, 10) +  QString(tr(")")) + QString(tr(".pdf"));
		}
		filename = extractfilename;
	}
}

学java基础的IO流，想起windows的复制文件的操作，当文件夹中有同名的文件时，可以自动给文件重命名。想起学过的IO流的知识，也想自己实现一下，码了下面的代码：



import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Scanner;

/**
*
*/
public class Demo5 {

   public static void main(String[] args) throws IOException {
      File file1 = getFile();
      File file2 = getFile();
      copyFile(file1, file2, check(file1, file2));
   }

   public static void copyFile(File file1, File file2, String s) throws IOException {
      BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file1));
      BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file2 + "\\" + s));
      System.out.println();
      int b;
      while ((b = bis.read()) != -1) {
         bos.write(b);
      }
      bis.close();
      bos.close();
   }

   public static String check(File file1, File file2) {
      String s = file1.getName().substring(0, file1.getName().length() - (file1.getName().lastIndexOf(".")) - 1);
      String s1 = file1.getName().substring(file1.getName().length() - (file1.getName().lastIndexOf(".")) - 1);
      File file3 = new File(file2.getPath() + "\\" + file1.getName());
      File[] arr = file2.listFiles();
      int num = 1;
      for (File file : arr) {
         String str = s + "-" + num++;
         if (file.getName().startsWith(s)) {
            if (file.getName().equals(str + s1)) {

            } else {
               return str + s1;

            }
         } else {
            return file1.getName();
         }
      }
      return file1.getName();
   }

   public static File getFile(){
      Scanner sc = new Scanner(System.in);
      while(true){
         System.out.println("请输入文件地址：");
         String s = sc.nextLine();
         File file = new File(s);
         if(file.exists()){
            if(file.isDirectory()){
               System.out.println("您输入的是文件夹地址，请输入文件地址：");
            }else{
               return file;
            }
         }else{
            System.out.println("您输入的文件地址不存在，请重新输入：");
         }
         
      }
   }

}

有其它更好的写法么，期待您的回复，谢谢咯！

2009-11-09  22:44:09
将一个文件夹中所有的bmp文件转化成同名的jpg文件
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Text.RegularExpressions;//正则表达式Regex在的命名空间
namespace 图片处理
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //含子文件夹的图像转换
            folderBrowserDialog1.ShowDialog();
            string strPath = folderBrowserDialog1.SelectedPath;
            //string strPath = @"d:/pic";
            DirectoryInfo path = new DirectoryInfo(strPath);
            FileInfo[] files = path.GetFiles("*.bmp", SearchOption.AllDirectories);
            foreach (FileInfo item in files)
            {
                Image img = Image.FromFile(item.FullName);
                string strNewFileName = Regex.Replace(item.FullName, @"/.bmp$", ".jpg", RegexOptions.IgnoreCase);
                img.Save(strNewFileName, System.Drawing.Imaging.ImageFormat.Jpeg);
                img.Dispose();
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            //指定文件夹的图像转换
            folderBrowserDialog1.ShowDialog();
            string strPath = folderBrowserDialog1.SelectedPath;
            DirectoryInfo  Dir=new  DirectoryInfo(strPath);
            foreach(FileInfo  f  in  Dir.GetFiles("*.*")) 
            {
                Image img=ReturnPhoto(f.FullName);
                string strNewFileName = Regex.Replace(f.FullName, @"/.bmp$", ".jpg", RegexOptions.IgnoreCase);
                img.Save(strNewFileName, System.Drawing.Imaging.ImageFormat.Jpeg);
                img.Dispose();
            }
        }
        private Image ReturnPhoto(string bmpFileName) 
        { 
          System.IO.FileStream stream ; 
          stream=File.OpenRead(bmpFileName); 
          Bitmap bmp = new Bitmap(stream); 
          System.Drawing.Image image = bmp; 
          System.Drawing.Image newImage = image.GetThumbnailImage(bmp.Width, bmp.Height, null, new IntPtr()); 
          Graphics g=Graphics.FromImage(newImage); 
          g.DrawImage(newImage,0,0, newImage.Width, newImage.Height); 
          g.Dispose(); 
          stream.Close(); 
          return newImage; 
        }         
    }
}

python自动生成和文件同名的文件夹，并将文件移动到同名文件夹中
之前



之后


代码
import os
import shutil

# 获取当前目录下所有文件及目录
listDir = os.listdir()

# 遍历
for dir in listDir:
    # 判断如果是文件夹或是自己则忽略
    if os.path.isdir(dir) or 'new.py' == dir:
        continue
    # 分离文件名和扩展名,获取不带后缀的文件名
    dirName = os.path.splitext(dir)[0]
    # 判断是否存在同名目录，
    # 不存在则将创建此目录，将同名文件移动到目录，
    # 存在则直接移动到此目录
    if not os.path.exists(dirName):
        os.mkdir(dirName)
    shutil.move(dir, dirName)