情景描述:
在页面查询出员工信息,点击”导出Excel“按钮,将员工信息生成Excel表格,并将Excel表格下载到本地。
/** * 将部门员工导出到Excel * @param ou 部门名称 * @return */ @RequestMapping("/exportExc.action") public void ExportExc(@RequestParam("ou")String ou,HttpServletRequest request,HttpServletResponse response){ System.out.println("导出到Excel"+ou); //第一步:创建一个webbook,对应一个Excel文件 HSSFWorkbook wb = new HSSFWorkbook(); //第二步:在webbook中添加一个sheet,对应Excel中的一个sheet HSSFSheet sheet = wb.createSheet(ou+"员工信息表"); //第三步,在sheet中添加一个表头即第0行 HSSFRow row = sheet.createRow(0); //第四步:创建单元格 ,并设置表表头居中 HSSFCellStyle style= wb.createCellStyle(); style.setAlignment(HSSFCellStyle.ALIGN_CENTER); //表头样式 HSSFCell cell =row.createCell(0); cell.setCellValue("员工编号"); cell.setCellStyle(style); sheet.setColumnWidth(0,4000); cell =row.createCell(1); cell.setCellValue("员工姓名"); cell.setCellStyle(style); sheet.setColumnWidth(1,4000); cell =row.createCell(2); cell.setCellValue("部门"); cell.setCellStyle(style); sheet.setColumnWidth(2,6000); cell =row.createCell(3); cell.setCellValue("岗位"); cell.setCellStyle(style); cell =row.createCell(4); cell.setCellValue("岗位类型"); cell.setCellStyle(style); cell =row.createCell(5); cell.setCellValue("是否在职"); cell.setCellStyle(style); cell =row.createCell(6); cell.setCellValue("生日"); cell.setCellStyle(style); cell =row.createCell(7); cell.setCellValue("性别"); cell.setCellStyle(style); cell =row.createCell(8); cell.setCellValue("民族"); cell.setCellStyle(style); cell =row.createCell(9); cell.setCellValue("姓"); cell.setCellStyle(style); cell =row.createCell(10); cell.setCellValue("名字"); cell.setCellStyle(style); cell =row.createCell(11); cell.setCellValue("密码"); cell.setCellStyle(style); //第五步:写入实体数据 Department oneDepart = dService.getNextDepartment(ou); System.out.println("查出的部门:"+oneDepart); List<Employee> employees = oneDepart.getEmployees(); System.out.println("待存入的员工信息:"+employees); //将员工对象存进单元行 for (int i = 0; i < employees.size(); i++) { row= sheet.createRow(i+1); //创建新的单元行 Employee employee = employees.get(i); row.createCell(0).setCellValue(employee.getUid()); //创建一个单元格,存入uid row.createCell(1).setCellValue(employee.getCn()); row.createCell(2).setCellValue(employee.getDepartment().getOu()); row.createCell(3).setCellValue(employee.getJobtitlename()); row.createCell(4).setCellValue(employee.getJobtypename()); row.createCell(5).setCellValue(employee.getHrstatus()); row.createCell(6).setCellValue(employee.getBirthday()); row.createCell(7).setCellValue(employee.getSex()); row.createCell(8).setCellValue(employee.getFolk()); row.createCell(9).setCellValue(employee.getSn()); row.createCell(10).setCellValue(employee.getGivenName()); row.createCell(11).setCellValue(employee.getUserPassword()); } //第六步,将文件存入指定路径 try{ // 设置response参数,可以打开下载页面 String fileName=ou+"员工表.xls"; /* fileName = URLEncoder.encode(fileName, "utf-8");*/ request.setCharacterEncoding("utf-8"); response.setCharacterEncoding("utf-8"); response.setContentType("application/x-download"); response.addHeader("Content-Disposition", "attachment;filename=" + new String(fileName.getBytes("utf-8"), "ISO8859-1")); OutputStream out = response.getOutputStream(); wb.write(out); out.close(); }catch(Exception e){ e.printStackTrace(); } }
之前用的ajax请求后台地址,一直没法下载,前台页面弹不出下载框
问题原因:
那是因为response原因,一般请求浏览器是会处理服务器输出的response,例如生成png、文件下载等,然而ajax请求只是个“字符型”的请求,json,text,html,xml,即请求的内容是以文本类型存放的。文件的下载是以二进制形式进行的,虽然可以读取到返回的response,但只是读取而已,是无法执行的,说白点就是js无法调用到浏览器的下载处理机制和程序。
解决方案:
隐藏表单,用提交表单的形式
用window.open() 或 window.location.href()
创建iframe,iframe的src可以是文件地址url来请求后台并下载文件
参考文献:http://blog.csdn.net/maomao_0324/article/details/74931050
来源:https://www.cnblogs.com/Actexpler-S/p/7941800.html