java操作poi生成excel.xlsx(设置下拉框)下载本地和前端下载
需求:导入excel表格,如果excel有错误,将错误的地方标红,在把数据以excel的形式写出,供用户下载
解决方案:1.以实体类的方式接收excel并解析(创建两个集合一个接收正常的数据一个接收错误的数据)
2.错误集合无论正确错误数据都要存储,并记录是否有误(错误数据拼接特殊字符作为标记,然后记录写入集合)
3.如果发现记录有错误记录,就要使用错误数据集合生成excel(对错误的数据对特殊字符截取)
4.将错误的excel生成到工程的相对的路径下,也可以上传服务器更好(下次下载前要记得清理记录),返回前端一个地址,前端点击链接进行下载
5.下面是片段代码
public static SXSSFWorkbook createExportInterviewExcel(List<Operator> data, String sheetName) { SXSSFWorkbook sxssfWorkbook = new SXSSFWorkbook(100); //标题栏设置 CellStyle style = sxssfWorkbook.createCellStyle(); style.setWrapText(true);//自动换行 style.setVerticalAlignment(CellStyle.VERTICAL_CENTER);//垂直居中 style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 居左 Font font = sxssfWorkbook.createFont(); font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); //字体增粗 style.setFont(font); DataFormat formats = sxssfWorkbook.createDataFormat(); style.setDataFormat(formats.getFormat("@"));//设置文本格式 //正常格式设置 CellStyle cellStyle = sxssfWorkbook.createCellStyle(); //cellStyle.setWrapText(true);//自动换行 cellStyle.setVerticalAlignment(CellStyle.VERTICAL_CENTER);//垂直居中 cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 居左 DataFormat format = sxssfWorkbook.createDataFormat(); cellStyle.setDataFormat(format.getFormat("@"));//设置文本格式 Sheet taskInfoSheet = sxssfWorkbook.createSheet(sheetName); DataValidationHelper helper = taskInfoSheet.getDataValidationHelper();//设置下拉框xlsx格式 //设置列宽 taskInfoSheet.setColumnWidth(5, 256 * 21); taskInfoSheet.setColumnWidth(6, 256 * 15); taskInfoSheet.setColumnWidth(7, 256 * 15); taskInfoSheet.setColumnWidth(8, 256 * 20); taskInfoSheet.setColumnWidth(18, 256 * 20); // 第一行标题 Row row_tital = taskInfoSheet.createRow(0); String[] keyWord = {"姓名","性别","民族", "年龄", "学历", "身份证号", "手机号", "在我司任职过", "岗位名", "广告名", "部门","工作地", "推荐人","推荐人电话","推荐人部门","推荐人工号", "面试安排时间","是否录用", "淘汰类型", "淘汰原因"}; for (int i = 0; i < keyWord.length; i++) { Cell cell_tital_index = row_tital.createCell(i); cell_tital_index.setCellValue(keyWord[i]); cell_tital_index.setCellStyle(style); } //异常情况处理 if (CollectionUtils.isEmpty(data) ||(CollectionUtils.isNotEmpty(data) && StringUtils.isBlank(data.get(0).getName()))) { return sxssfWorkbook; } // 数据行 for (int i = 0; i < data.size(); i++) { // 导出详情 Row row_data = taskInfoSheet.createRow(i + 1); Cell cell_data_name = row_data.createCell(0); cell_data_name.setCellValue(data.get(i).getName()); cell_data_name.setCellStyle(cellStyle); Cell cell_data_nation = row_data.createCell(1); cell_data_nation.setCellValue(data.get(i).getNational()); cell_data_nation.setCellStyle(cellStyle); Cell cell_data_age = row_data.createCell(2); Integer age= null; if(data.get(i).getAge()!= null){ age = data.get(i).getAge(); }else{ age=1; } cell_data_age.setCellValue(age); cell_data_age.setCellStyle(cellStyle); //添加工作地 Cell cell_data_location =row_data.createCell(3); cell_data_location.setCellValue(data.get(i).getLocation()); cell_data_location.setCellStyle(cellStyle); Cell cell_data_referrer = row_data.createCell(4); cell_data_referrer.setCellValue(data.get(i).getReferrer()); cell_data_referrer.setCellStyle(cellStyle); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); String interviewTime = ""; if (null != data.get(i).getInterviewTime()) { interviewTime = sdf.format(data.get(i).getInterviewTime()); } Cell cell_data_interviewTime = row_data.createCell(5); cell_data_interviewTime.setCellValue(interviewTime); cell_data_interviewTime.setCellStyle(cellStyle); String[] yesOrNo = {"是", "否"}; creatDropDownList(taskInfoSheet,helper,yesOrNo,1,200,6,6); String[] list = {"不符合返聘要求", "不符合公司规则", "综合素质", "其他"}; creatDropDownList(taskInfoSheet, helper, list, 1, 200, 7, 7); } return sxssfWorkbook; } //创建下拉框 private static void creatDropDownList(Sheet taskInfoSheet, DataValidationHelper helper, String[] list, Integer firstRow, Integer lastRow, Integer firstCol, Integer lastCol) { CellRangeAddressList addressList = new CellRangeAddressList(firstRow, lastRow, firstCol, lastCol); //设置下拉框数据 DataValidationConstraint constraint = helper.createExplicitListConstraint(list); DataValidation dataValidation = helper.createValidation(constraint, addressList); //处理Excel兼容性问题 if (dataValidation instanceof XSSFDataValidation) { dataValidation.setSuppressDropDownArrow(true); dataValidation.setShowErrorBox(true); } else { dataValidation.setSuppressDropDownArrow(false); } taskInfoSheet.addValidationData(dataValidation); } //需求:导入excel表格,如果excel有错误,将错误的地方标红,在把数据以excel的形式写出,供用户下载 //解决方案:1.以实体类的方式接收excel并解析(创建两个集合一个接收正常的数据一个接收错误的数据) //2.错误集合无论正确错误数据都要存储,并记录是否有误(错误数据拼接特殊字符作为标记,然后记录写入集合) //3.如果发现记录有错误记录,就要使用错误数据集合生成excel(对错误的数据对特殊字符截取) //4.将错误的excel生成到工程的相对的路径下(下次下载前要记得清理记录),返回前端一个地址,前端点击链接进行下载 //这个方法就是清除之前的文件夹 private String getExportResult(SXSSFWorkbook sxssfWorkbook) { //删除之前文件夹下的文件 String targetUrl = System.getProperty("export.error.result"); File targetFile = new File(targetUrl); ContentUtil.deletAllFiles(targetFile); String fileName = null; try { fileName = System.getProperty("export.error.result") + UUID.randomUUID().toString() + ".xlsx"; File file = new File(fileName); if (!file.exists()) { file.getParentFile().mkdirs(); } FileOutputStream outputStream = new FileOutputStream(fileName); sxssfWorkbook.write(outputStream); outputStream.close(); } catch (IOException e) { logger.error("OperatorInfoImportAuditResultServiceImpl下载导入错误excel表格异常", e); e.printStackTrace(); } return fileName; } public static void deletAllFiles(File file) { if (file == null) { return; } if (file.exists()) { if (file.isFile()) { file.delete(); }else if (file.isDirectory()) { File[] listFiles = file.listFiles(); if (listFiles == null) { return; } for (File file2 : listFiles) { deletAllFiles(file2); } /* //递归跳出来的时候删除空文件夹 file.delete();*/ } } } @RequestMapping(value = "/exportErrorImportResult", method = RequestMethod.GET) public void exportErrorImportResult(@RequestParam(value = "paramUrl") String paramUrl, HttpServletResponse response, HttpServletRequest request) { //生成错误的文档 try { XSSFWorkbook workbook = null; File file = new File(paramUrl); if (file.exists()) { FileInputStream in = new FileInputStream(file); workbook = new XSSFWorkbook(in); } else { logger.info("初级员工内推导出错误的excel文件,文件不存在"); } OutputStream ouputStream = response.getOutputStream(); String fileName = "导出错误"; fileName = URLEncoder.encode(fileName, "UTF-8"); response.reset(); response.setContentType("application/vnd.ms-excel"); response.setHeader("Content-Disposition", "attachment;filename=" + fileName + ".xlsx"); workbook.write(ouputStream); ouputStream.flush(); ouputStream.close(); } catch (Exception e) { logger.error("导出错误的excel文件,OperatorPostInfoController 异常:", e); } }
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