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2021-01-08 11:52:26
前言
最近接到一个需求,需要把一份37万的excel数据解析并导入数据库,
分析
表格格式相对复杂包含很多合并单元格, 不符合通过navicat直接导入的要求, 数据量比较大, 建议一次保存25条,否则会导致内存泄漏;
代码
1.引入依赖<dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>3.9</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>3.9</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml-schemas</artifactId> <version>3.9</version> </dependency>
2.具体操作代码
2.1.判断指定的单元格是否为合并单元格/** * 判断指定的单元格是否是合并单元格 * * @param sheet * @param row 行下标 * @param column 列下标 * @return */ private static boolean isMergedRegion(Sheet sheet, int row, int column) { //获取该sheet所有合并的单元格 int sheetMergeCount = sheet.getNumMergedRegions(); //循环判断 该单元格属于哪个合并单元格, 如果能找到对应的,就表示该单元格是合并单元格 for (int i = 0; i < sheetMergeCount; i++) { CellRangeAddress range = sheet.getMergedRegion(i); int firstColumn = range.getFirstColumn(); int lastColumn = range.getLastColumn(); int firstRow = range.getFirstRow(); int lastRow = range.getLastRow(); if (row >= firstRow && row <= lastRow) { if (column >= firstColumn && column <= lastColumn) { return true; } } } return false; }
2.2.获取合并单元格的值
/** * 获取合并单元格的值 * * @param sheet sheet索引 从0开始 * @param row 行索引 从0开始 * @param column 列索引 从0开始 * @return */ public static String getMergedRegionValue(Sheet sheet, int row, int column) { int sheetMergeCount = sheet.getNumMergedRegions(); for (int i = 0; i < sheetMergeCount; i++) { CellRangeAddress ca = sheet.getMergedRegion(i); int firstColumn = ca.getFirstColumn(); int lastColumn = ca.getLastColumn(); int firstRow = ca.getFirstRow(); int lastRow = ca.getLastRow(); if (row >= firstRow && row <= lastRow) { if (column >= firstColumn && column <= lastColumn) { Row fRow = sheet.getRow(firstRow); Cell fCell = fRow.getCell(firstColumn); return getCellValue(fCell); } } } return null; }
2.3.获取单元格的值(不是合并单元格)
/** * 获取单元格的值 先确定单元格的类型,然后根据类型 取值 * * @param cell 单元格 * @return */ public static String getCellValue(Cell cell) { if (cell == null) return ""; if (cell.getCellType() == Cell.CELL_TYPE_STRING) { return cell.getStringCellValue(); } else if (cell.getCellType() == Cell.CELL_TYPE_BOOLEAN) { return String.valueOf(cell.getBooleanCellValue()); } else if (cell.getCellType() == Cell.CELL_TYPE_FORMULA) { return cell.getCellFormula(); } else if (cell.getCellType() == Cell.CELL_TYPE_NUMERIC) { return String.valueOf(cell.getNumericCellValue()); } return ""; }
2.4.解析完一行数据后,判断对象的属性是否都为空
/** * 判断一个对象的属性是否都为空, * * @param obj 对象 * @return false : 至少有一个属性不为空, true: 该对象的属性全为空 */ public boolean allFieldIsNULL(Object obj) { Boolean flag = true;//都为空 if (null == obj || "".equals(obj)) return flag; try { Field[] declaredFields = obj.getClass().getDeclaredFields(); for (Field field : declaredFields) { // 循环该类,取出类中的每个属性 field.setAccessible(true);// 把该类中的所有属性设置成 public Object object = field.get(obj); // object 是对象中的属性 if (object instanceof CharSequence) { // 判断对象中的属性的类型,是否都是CharSequence的子类 if (!Objects.isNull(object)) { // 如果是他的子类,那么就可以用ObjectUtils.isEmpty进行比较 flag = false;//不为空 } } else { //如果不是那就直接用null判断 if (!(null == object || "".equals(object))) { flag = false;//不为空 } } } } catch (Exception e) { e.printStackTrace(); } return flag;//false:不都为空 }
2.5.解析excel的工具类
/** * 读取excel文件 * * @param * @param sheetIndex sheet页下标:从0开始 * @param startReadLine 开始读取的行:从0开始 * @param tailLine 结束行 */ public void readExcel(String path, int sheetIndex, int startReadLine, int tailLine) { Workbook wb = null; try { wb = WorkbookFactory.create(new File(path)); } catch (IOException e) { e.printStackTrace(); } catch (InvalidFormatException e) { e.printStackTrace(); } //读取excel表中的sheet, 参数为sheet的索引值(从0开始) Sheet sheet = wb.getSheetAt(sheetIndex); Row row = null; Boolean save = false; //获取该sheet的最后一行数据的索引 int lastRowNum = sheet.getLastRowNum(); ArrayList<CmsIndexCategory> list = new ArrayList<>(); //外循环是循环行,内循环是循环每行的单元格 for (int i = startReadLine; i <= lastRowNum; i++) { CmsIndexCategory indexCategory = new CmsIndexCategory(); //根据行索引获取行对象(单元格集合) row = sheet.getRow(i); //遍历行的单元格,并解析 for (Cell c : row) { String returnStr = ""; String trim = ""; //设置该单元格的数据的类型为String c.setCellType(Cell.CELL_TYPE_STRING); boolean isMerge = isMergedRegion(sheet, i, c.getColumnIndex()); // 判断是否具有合并单元格 if (isMerge) { //如果是合并单元格,就获取合并单元格的值 returnStr = getMergedRegionValue(sheet, row.getRowNum(), c.getColumnIndex()).toString(); } else { //不是合并单元格直接获取单元格的值 returnStr = getCellValue(c).toString(); } if (Objects.nonNull(returnStr) && StringUtils.isNotEmpty(returnStr)) { trim = returnStr.trim(); //封装结果集,一行数据封装为一个对象 if (c.getColumnIndex() == 0) { indexCategory.setAgencyBrand(trim); } else if (c.getColumnIndex() == 1) { indexCategory.setCompanyName(trim); } else if (c.getColumnIndex() == 2) { indexCategory.setIndustryField(trim); } else if (c.getColumnIndex() == 3) { indexCategory.setDetectionField(trim); } else if (c.getColumnIndex() == 4) { indexCategory.setDetectionObj(trim); } else if (c.getColumnIndex() == 5) { indexCategory.setSampleCategory(trim); } else if (c.getColumnIndex() == 6) { indexCategory.setDetectionRange(trim); } else if (c.getColumnIndex() == 7) { indexCategory.setDetectionItem(trim); } else if (c.getColumnIndex() == 8) { indexCategory.setDetectionStandard(trim); } } } //判断一个对象的属性是否都为空, true:都为空 , false: 不都为空 if (!allFieldIsNULL(indexCategory)) { //该对象不都为空的情况下,添加到集合中 list.add(indexCategory); } //一次保存25条数据,最后一次数据不够25条也进行保存 if (list.size() == 25 || i == lastRowNum) { save = this.iCmsIndexCategoryService.saveBatch(list); System.out.println("==================================================第------" + (i + 1) + "---------行保存结果为======================================== " + save); list.clear(); } } }
3.具体实践
@GetMapping("/excel") public String excel2() { this.readExcel("C:\\Users\\yangmin\\Desktop\\我要测资料\\特色检测项目\\7.xlsx", 0, 0, 0); return "完成"; }
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接口返回类package com.hs.report.utils; import com.hs.report.enums.ResultCode; import org.apache.commons.lang.StringUtils; import java.io.Serializable; import java.util.HashMap; import java.util.Map; public class Result <T> extends BaseDomain implements Serializable { private static final long serialVersionUID = -1117047807265427246L; private int status; private String msg; private T data; public Result() { this.status = ResultCode.SUCCESS.getStatus(); this.msg = ResultCode.SUCCESS.getMsg(); } public Result(T data) { this.setData(data); this.status = ResultCode.SUCCESS.getStatus(); this.msg = ResultCode.SUCCESS.getMsg(); } public Result(int status, String msg) { this.setStatus(status); this.setMsg(msg); } public Result(int status, String msg, T data) { this.setStatus(status); this.setMsg(msg); this.setData(data); } public Result<T> setError(int status, String msg) { this.setStatus(status); this.setMsg(msg); return this; } public Result<T> setError(ResultCode errorCode) { this.setStatus(errorCode.getStatus()); this.setMsg(errorCode.getMsg()); return this; } public boolean isSuccess() { return this.getStatus() == ResultCode.SUCCESS.getStatus(); } public static Result instance() { return new Result(); } public static <T> Result instance(T data) { return new Result(data); } public static <T> Result instance(int status, String msg) { return new Result(status, msg); } public static <T> Result instance(int status, String msg, T data) { return new Result(status, msg, data); } public int getStatus() { return this.status; } public void setStatus(int status) { this.status = status; } public String getMsg() { return this.msg; } public void setMsg(String msg) { this.msg = msg; } public void setPeriodIdMsg(Integer periodId){ this.msg = ResultCode.SUCCESS.getMsg() + "_" + periodId; } public T getData() { return this.data; } public void setData(T data) { this.data = data; } public Map<String,Object> toJsonMap(){ Map<String,Object> map = new HashMap<>(); map.put("data",this.data); map.put("msg",this.msg); map.put("status",this.status); return map; } }
实体类
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Controller层
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Service层
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2020-08-29 16:30:20主要介绍了Java实现Excel导入导出数据库的方法,结合实例形式分析了java针对Excel的读写及数据库操作相关实现技巧,需要的朋友可以参考下 -
三行代码嵌入 java 实现复杂 Excel 数据入库
2020-06-12 11:24:10由于Java并没有表格对象,总要利用集合加实体类去实现(硬编码),如果碰到格式复杂的表格,解析难度大,工作量会成倍增加,代码不仅冗长、且很难通用。 比如要处理这么个场景:数据库表Logistics有3个字段:Shippers...一般常规办法:先使用POI或者HSSFWorkbook等第三方类库对其表格数据结构化,再用SQL语句写入数据库。由于Java并没有表格对象,总要利用集合加实体类去实现(硬编码),如果碰到格式复杂的表格,解析难度大,工作量会成倍增加,代码不仅冗长、且很难通用。
比如要处理这么个场景:数据库表Logistics有3个字段:Shippers、Region、Quantity。解析如下Excel表格,并入库:
入库后的效果:
Java代码大概要写成这样子:
...
File target = new File(filepath, filename);
FileInputStream fi = new FileInputStream(target);
HSSFWorkbook wb = new HSSFWorkbook(fi);
HSSFSheet sheet = wb.getSheetAt(sheetnum);
int rowNum = sheet.getLastRowNum() + 1;
for (int i = startrow; i < rowNum; i++) {
PageData varpd = new PageData();
HSSFRow row = sheet.getRow(i);
int cellNum = row.getLastCellNum();
...
}
...
List<PageData> listPd = (List)ObjectExcelRead.readExcel(filePath, fileName, 3, 0, 0);
for(int i=0;i<listPd.size();i++){
pd.put("ET_ID", this.get32UUID());
...
}
/*The operation to import the database*/
mv.addObject("msg","success");
...
如果有了集算器,这样的问题则会简单很多,它是专业处理结构化数据的语言,能够轻松读取Excel数据,结构化成“序表”后导入数据库。以往需要编写数千行代码才能完成的Excel数据结构化入库工作,现在只需简单的几行就搞定了。比如上面的问题,集算器SPL仅3行:
A
1
=file("/workspace/crosstab.xls").xlsimport@t(;1,2).rename(#1:Shippers)
2
=A1.pivot@r(Shippers;Region,Quantity)
3
=Mysql.update(A2,Logistics)
其实还有很多类似的结构化问题不太方便,但有集算器SPL的辅助却很简单,感兴趣可以参考:复杂Excel表格导入导出的最简方法、10行代码提取复杂Excel数据
集算器还很容易嵌入到Java应用程序中,Java如何调用SPL脚本有使用和获得它的方法。
关于集算器安装使用、获得免费授权和相关技术资料,可以参见如何使用集算器。
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java 使用POI导入复杂excel表格
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上代码:
import com.ruoyi.common.exception.CustomException; import com.ruoyi.common.utils.DateUtils; import com.ruoyi.common.utils.StringUtils; import com.ruoyi.common.utils.file.FileUtils; import com.ruoyi.system.domain.VehicleInfo; import com.ruoyi.system.domain.VehicleInsurance; import com.ruoyi.system.domain.VehicleTotalmile; import com.ruoyi.system.domain.vo.VehicleInfoImportVo; import com.ruoyi.system.mapper.sysdict.DictDataMapper; import com.ruoyi.system.mapper.vehicle.VehicleInfoMapper; import com.ruoyi.system.mapper.vehicle.VehicleInsuranceMapper; import com.ruoyi.system.mapper.vehicle.VehicleTotalmileMapper; import lombok.extern.slf4j.Slf4j; import org.apache.poi.ss.usermodel.*; import org.apache.poi.ss.util.CellRangeAddress; import org.springframework.beans.BeanUtils; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import org.springframework.web.multipart.MultipartFile; import java.io.File; import java.io.IOException; import java.lang.reflect.Field; import java.math.BigDecimal; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.Objects; import java.util.UUID; import static org.apache.poi.ss.usermodel.CellType.*; @Slf4j @Service public class VehicleImportService { @Autowired private DictDataMapper dictDataMapper; @Autowired private VehicleInfoMapper vehicleInfoMapper; @Autowired private VehicleInsuranceMapper vehicleInsuranceMapper; @Autowired private VehicleTotalmileMapper vehicleTotalmileMapper; /** * 读取excel文件 * * @param path 文件流 * @param operName 操作人名称 * @param sheetIndex sheet页下标:从0开始 * @param startReadLine 开始读取的行:从0开始 * @param tailLine 结束行 */ public String importVehicleInfo(MultipartFile path, String operName, int sheetIndex, int startReadLine, int tailLine) { Workbook wb = null; File file = null; try { file=File.createTempFile(path.getOriginalFilename(), null); path.transferTo(file); file.deleteOnExit(); wb = WorkbookFactory.create(file); } catch (Exception e) { e.printStackTrace(); } //读取excel表中的sheet, 参数为sheet的索引值(从0开始) Sheet sheet = wb.getSheetAt(sheetIndex); Row row = null; Boolean save = false; //获取该sheet的最后一行数据的索引 int lastRowNum = sheet.getLastRowNum(); if (lastRowNum < 2){ throw new CustomException("导入模板不正确!"); } if (lastRowNum == 2){ throw new CustomException("导入车辆数据不能为空!"); } int successNum = 0; int failureNum = 0; StringBuilder successMsg = new StringBuilder(); StringBuilder failureMsg = new StringBuilder(); ArrayList<VehicleInfoImportVo> list = new ArrayList<>(); //外循环是循环行,内循环是循环每行的单元格 for (int i = 3; i <= lastRowNum; i++) { //车辆信息导入对象 VehicleInfoImportVo vehicleInfoImportVo = new VehicleInfoImportVo(); //车辆保险对象 VehicleInsurance vehicleInsurance = new VehicleInsurance(); //商业保险费 BigDecimal commercialInsurPrice = BigDecimal.ZERO; //承运险 BigDecimal carrierRisk = BigDecimal.ZERO; //交强险保费 BigDecimal compulsoryInsurPrice = BigDecimal.ZERO; //商业保险期限 String commercialInsurDate = ""; //承运险期限 String carrierRiskDate = ""; //交强险期限 String compulsoryInsurDate = ""; //保险号数组 String[] insurNums = null; //车辆里程对象 VehicleTotalmile vehicleTotalmile = new VehicleTotalmile(); //根据行索引获取行对象(单元格集合) row = sheet.getRow(i); //遍历行的单元格,并解析 for (Cell c : row) { String returnStr = ""; String value = ""; //设置该单元格的数据的类型为String c.setCellType(STRING); boolean isMerge = isMergedRegion(sheet, i, c.getColumnIndex()); // 判断是否具有合并单元格 if (isMerge) { //如果是合并单元格,就获取合并单元格的值 returnStr = getMergedRegionValue(sheet, row.getRowNum(), c.getColumnIndex()).toString(); } else { //不是合并单元格直接获取单元格的值 returnStr = getCellValue(c).toString(); } if (StringUtils.isNotEmpty(returnStr)) { value = returnStr.trim(); //封装结果集,一行数据封装为一个对象 if (c.getColumnIndex() == 0) { System.out.println("序号:"+value); } else if (c.getColumnIndex() == 1) { System.out.println("车牌号:"+value); vehicleInfoImportVo.setVehicleNo(value); } else if (c.getColumnIndex() == 2) { System.out.println("车牌颜色:"+value); vehicleInfoImportVo.setPlateColor(value); } else if (c.getColumnIndex() == 3) { System.out.println("核定载客数:"+value.replaceAll("人", "")); } else if (c.getColumnIndex() == 4) { System.out.println("车辆厂牌:"+value); vehicleInfoImportVo.setBrand(value); } else if (c.getColumnIndex() == 5) { System.out.println("车辆型号:"+value); vehicleInfoImportVo.setModel(value); } else if (c.getColumnIndex() == 6) { System.out.println("车辆类型:"+value); } else if (c.getColumnIndex() == 7) { System.out.println("车辆所有人:"+value); vehicleInfoImportVo.setOwnerName(value); } else if (c.getColumnIndex() == 8) { System.out.println("车身颜色:"+value); vehicleInfoImportVo.setVehicleColor(value); } else if (c.getColumnIndex() == 9) { System.out.println("发动机号:"+value); vehicleInfoImportVo.setEngineId(value); } else if (c.getColumnIndex() == 10) { System.out.println("车架号:"+value); vehicleInfoImportVo.setVin(value); } else if (c.getColumnIndex() == 11) { System.out.println("保险公司名称:"+value); vehicleInsurance.setInsurCom(value); vehicleInsurance.setVehicleNo(vehicleInfoImportVo.getVehicleNo()); } else if (c.getColumnIndex() == 12) { System.out.println("保险号:"+value); insurNums = value.split(";"); } else if (c.getColumnIndex() == 13) { System.out.println("车船税:"+value); } else if (c.getColumnIndex() == 14) { System.out.println("商业保险费:"+value); commercialInsurPrice = new BigDecimal(value); } else if (c.getColumnIndex() == 15) { System.out.println("承运险保费:"+value); carrierRisk = new BigDecimal(value); } else if (c.getColumnIndex() == 16) { System.out.println("交强险保费:"+value); compulsoryInsurPrice = new BigDecimal(value); } else if (c.getColumnIndex() == 17) { System.out.println("保险总金额(人民币元):"+value); } else if (c.getColumnIndex() == 18) { System.out.println("承运险保险期限:"+value); carrierRiskDate = value; } else if (c.getColumnIndex() == 19) { System.out.println("交强险保险期限:"+value); compulsoryInsurDate = value; } else if (c.getColumnIndex() == 20) { System.out.println("商业险保险期限:"+value); commercialInsurDate = value; } else if (c.getColumnIndex() == 21) { System.out.println("年审时间:"+value); } else if (c.getColumnIndex() == 22) { System.out.println("行驶公里数:"+value); vehicleTotalmile.setVehicleNo(vehicleInfoImportVo.getVehicleNo()); vehicleTotalmile.setTotalMile(new BigDecimal(value)); } } } //判断一个对象的属性是否都为空, true:都为空 , false: 不都为空 if (!allFieldIsNULL(vehicleInfoImportVo)) { Date date = DateUtils.getNowDate(); vehicleInsurance.setUpdateTime(date); vehicleTotalmile.setUpdateTime(date); vehicleInfoImportVo.setUpdateBy(operName); vehicleInfoImportVo.setId(UUID.randomUUID().toString().replaceAll("-","")); try { // 验证是否存在这个车辆 VehicleInfo vehicle = vehicleInfoMapper.selectVehicleInfoByVehicleNo(vehicleInfoImportVo.getVehicleNo()); if (vehicle == null){ vehicleInfoImportVo.setCreateTime(date); VehicleInfo vehicleInfo = new VehicleInfo(); // 复制 vehicleInfoImportVo 到 vehicleInfo BeanUtils.copyProperties(vehicleInfoImportVo, vehicleInfo); vehicleInfo.setSeats(Integer.valueOf(vehicleInfoImportVo.getSeats())); if (vehicleInfoMapper.insertVehicleInfo(vehicleInfo) > 0){ successNum++; successMsg.append("<br/>" + successNum + "、车辆 " + vehicleInfoImportVo.getVehicleNo() + " 导入成功"); } else { log.info("导入车辆信息,插入车辆信息失败,车牌号:{}", vehicleInfoImportVo.getVehicleNo()); } } else { vehicleInfoImportVo.setUpdateTime(date); VehicleInfo vehicleInfo = new VehicleInfo(); // 复制 vehicleInfoImportVo 到 vehicleInfo BeanUtils.copyProperties(vehicleInfoImportVo, vehicleInfo); vehicleInfo.setSyncflag(0); if (vehicleInfoMapper.updateVehicleInfo(vehicleInfo) > 0){ successNum++; successMsg.append("<br/>" + successNum + "、车辆 " + vehicleInfoImportVo.getVehicleNo() + " 更新成功"); } else { log.info("导入车辆信息,更新车辆信息失败,车牌号:{}", vehicleInfoImportVo.getVehicleNo()); } } } catch (Exception e) { failureNum++; String msg = "<br/>" + failureNum + "、车辆 " + vehicleInfoImportVo.getVehicleNo() + " 导入失败:"; failureMsg.append(msg + e.getMessage()); log.error(msg, e); } } } if (failureNum > 0) { failureMsg.insert(0, "很抱歉,导入失败!共 " + failureNum + " 条数据格式不正确,错误如下:"); throw new CustomException(failureMsg.toString()); } else { successMsg.insert(0, "恭喜您,数据已全部导入成功!共 " + successNum + " 条,数据如下:"); } return successMsg.toString(); } /** * 判断指定的单元格是否是合并单元格 * * @param sheet * @param row 行下标 * @param column 列下标 * @return */ private static boolean isMergedRegion(Sheet sheet, int row, int column) { //获取该sheet所有合并的单元格 int sheetMergeCount = sheet.getNumMergedRegions(); //循环判断 该单元格属于哪个合并单元格, 如果能找到对应的,就表示该单元格是合并单元格 for (int i = 0; i < sheetMergeCount; i++) { CellRangeAddress range = sheet.getMergedRegion(i); int firstColumn = range.getFirstColumn(); int lastColumn = range.getLastColumn(); int firstRow = range.getFirstRow(); int lastRow = range.getLastRow(); if (row >= firstRow && row <= lastRow) { if (column >= firstColumn && column <= lastColumn) { return true; } } } return false; } /** * 获取合并单元格的值 * * @param sheet sheet索引 从0开始 * @param row 行索引 从0开始 * @param column 列索引 从0开始 * @return */ public static String getMergedRegionValue(Sheet sheet, int row, int column) { int sheetMergeCount = sheet.getNumMergedRegions(); for (int i = 0; i < sheetMergeCount; i++) { CellRangeAddress ca = sheet.getMergedRegion(i); int firstColumn = ca.getFirstColumn(); int lastColumn = ca.getLastColumn(); int firstRow = ca.getFirstRow(); int lastRow = ca.getLastRow(); if (row >= firstRow && row <= lastRow) { if (column >= firstColumn && column <= lastColumn) { Row fRow = sheet.getRow(firstRow); Cell fCell = fRow.getCell(firstColumn); return getCellValue(fCell); } } } return null; } /** * 获取单元格的值 先确定单元格的类型,然后根据类型 取值 * * @param cell 单元格 * @return */ public static String getCellValue(Cell cell) { if (cell == null) return ""; if (cell.getCellType() == STRING) { return cell.getStringCellValue(); } else if (cell.getCellType() == BOOLEAN) { return String.valueOf(cell.getBooleanCellValue()); } else if (cell.getCellType() == FORMULA) { return cell.getCellFormula(); } else if (cell.getCellType() == NUMERIC) { return String.valueOf(cell.getNumericCellValue()); } return ""; } /** * 判断一个对象的属性是否都为空, * * @param obj 对象 * @return false : 至少有一个属性不为空, true: 该对象的属性全为空 */ public static boolean allFieldIsNULL(Object obj) { Boolean flag = true;//都为空 if (null == obj || "".equals(obj)) return flag; try { Field[] declaredFields = obj.getClass().getDeclaredFields(); for (Field field : declaredFields) { // 循环该类,取出类中的每个属性 field.setAccessible(true);// 把该类中的所有属性设置成 public Object object = field.get(obj); // object 是对象中的属性 if (object instanceof CharSequence) { // 判断对象中的属性的类型,是否都是CharSequence的子类 if (!Objects.isNull(object)) { // 如果是他的子类,那么就可以用ObjectUtils.isEmpty进行比较 flag = false;//不为空 } } else { //如果不是那就直接用null判断 if (!(null == object || "".equals(object))) { flag = false;//不为空 } } } } catch (Exception e) { e.printStackTrace(); } return flag;//false:不都为空 } }
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