POI导出数据到EXCEL表格

 /**
     * 将分区数据导出到excel表格中
     * @param request
     * @param response
     * @throws Exception
     */
    @RequestMapping("/subAreaController/export.action")
    public void exportXlsFile(HttpServletRequest request, HttpServletResponse response) throws Exception {
        //1.得到所有分区数据
        List<Subarea> subareas = subAreaService.getAll();
        //2.将分区数据写入 xls文件
        //创建工作簿
        HSSFWorkbook workbook = new HSSFWorkbook();
        //创建工作表
        HSSFSheet sheet = workbook.createSheet("分区数据");
        //创建一条记录
        HSSFRow rowHead = sheet.createRow(0);
        //填充记录的数据单元格
        rowHead.createCell(0).setCellValue("分拣编号");
        rowHead.createCell(1).setCellValue("省");
        rowHead.createCell(2).setCellValue("市");
        rowHead.createCell(3).setCellValue("区");
        rowHead.createCell(4).setCellValue("关键字");
        rowHead.createCell(5).setCellValue("起始号");
        rowHead.createCell(6).setCellValue("终止号");
        rowHead.createCell(7).setCellValue("单双号");
        rowHead.createCell(8).setCellValue("位置");
        //循环写入结果集
        for(Subarea subarea:subareas){
            HSSFRow rowDate = sheet.createRow(sheet.getLastRowNum() + 1);
            rowDate.createCell(0).setCellValue(subarea.getId());
            rowDate.createCell(1).setCellValue(subarea.getRegion()getProvince());
            rowDate.createCell(2).setCellValue(subarea.getRegion().getCity());
            rowDate.createCell(3).setCellValue(subarea.getRegion().getDistrict());
            rowDate.createCell(4).setCellValue(subarea.getAddresskey());
            rowDate.createCell(5).setCellValue(subarea.getStartnum());
            rowDate.createCell(6).setCellValue(subarea.getEndnum());
            rowDate.createCell(7).setCellValue(subarea.getSingle());
            rowDate.createCell(8).setCellValue(subarea.getPosition());
        }
        //3.将xls文件写出到输出流中
        String fileName = "分区数据.xls";
        String mimeType = new MimetypesFileTypeMap().getContentType(new File(fileName));
        response.setContentType(mimeType);
        //根据浏览器对文件名字编码
        String encodeDownloadFilenameFileName = FileUtils.encodeDownloadFilename(fileName, request.getHeader("user-agent"));
        response.setHeader("Content-Disposition", "attachment;fileName="+encodeDownloadFilenameFileName);
        ServletOutputStream outputStream = response.getOutputStream();
        workbook.write(outputStream);

    }