java将数据库数据导出excel并通过浏览器下载（XSSFWorkbook）

XSSFWorkbook

pom文件

	<!--Excel的导出-->
		<!--xls-->
		<dependency>
			<groupId>org.apache.poi</groupId>
			<artifactId>poi</artifactId>
			<version>3.9</version>
		</dependency>
		<!--xlsx-->
		<dependency>
			<groupId>org.apache.poi</groupId>
			<artifactId>poi-ooxml</artifactId>
			<version>3.9</version>
		</dependency>
		<!--日期格式化工具-->
		<dependency>
			<groupId>joda-time</groupId>
			<artifactId>joda-time</artifactId>
			<version>2.10.1</version>
		</dependency>

Controller

    @ApiOperation("导出excel")              
    @RequestMapping(value = "/excel", method = RequestMethod.POST,produces = MediaType.APPLICATION_OCTET_STREAM_VALUE)
    public void excel(HttpServletResponse response, @RequestBody List<CustomersForm> list) {

        try {
            customersService.exportExcel(response, list);
        } catch (Exception e) {
            e.printStackTrace();
        }

    }
   /**
	注意:1.如果从浏览器下载的文件报错记得加这个
		produces = MediaType.APPLICATION_OCTET_STREAM_VALUE
		2.List list这个是我们需求  需要前端传的数据不用读数据库
		要读数据库的话你也可以把集合查出来不用传这个值
   */

service

  @Override
    public void exportExcel(HttpServletResponse response, List<CustomersForm> list) throws IOException {
        //创建一个webbook,对应一个Excel文件夹
        XSSFWorkbook workbook = new XSSFWorkbook();
        // 第二步，在webbook中添加一个sheet,对应Excel文件中的sheet
        XSSFSheet sheet = workbook.createSheet("用户实体");
        // 第三步，在sheet中添加表头第0行,注意老版本poi对Excel的行数列数有限制short
        XSSFRow row = sheet.createRow(0);

        String fileName = new String(new DateTime().toString("yyyyMMddHHmm").getBytes("gbk"), "iso-8859-1");
        // 创建一个居中格式
        XSSFCellStyle style = workbook.createCellStyle();
        // 创建一个居中格式
        style.setAlignment(HorizontalAlignment.CENTER);
        int rowNum = 1;
        //设置每列标题
        String[] headers = {"用户ID", "用户账号", "会员等级", "认证状态", "消费金额", "订单数量", "用户启用状态",
                "公司名称", "省", "市", "县", "详细地址", "联系人", "联系号码", "职位", "qq", "微信", "邮箱", "信用代码"};
        //在excel表中添加表头
        for (int i = 0; i < headers.length; i++) {
            XSSFCell cell = row.createCell(i);
            XSSFRichTextString text = new XSSFRichTextString(headers[i]);
            cell.setCellValue(text);
        }

        //在表中存放查询到的数据放入对应的列
        for (CustomersForm customersForm: list ) {

            XSSFRow row1 = sheet.createRow(rowNum);
            row1.createCell(0).setCellValue(customersForm.getId());   //设置单元格内容
            row1.createCell(1).setCellValue(customersForm.getMobile());
            row1.createCell(2).setCellValue(customersForm.getLevel());
            row1.createCell(3).setCellValue(customersForm.getState());
            row1.createCell(4).setCellValue(customersForm.getPay());
            row1.createCell(5).setCellValue(customersForm.getNum());
            row1.createCell(6).setCellValue(customersForm.getActive());
            row1.createCell(7).setCellValue(customersForm.getNameCompany());
            row1.createCell(8).setCellValue(customersForm.getProvince());
            row1.createCell(9).setCellValue(customersForm.getCity());
            row1.createCell(10).setCellValue(customersForm.getCounty());
            row1.createCell(11).setCellValue(customersForm.getDetailsAddress());
            row1.createCell(12).setCellValue(customersForm.getTheContact());
            row1.createCell(13).setCellValue(customersForm.getTheNumber());
            row1.createCell(14).setCellValue(customersForm.getJob());
            row1.createCell(15).setCellValue(customersForm.getQq());
            row1.createCell(16).setCellValue(customersForm.getWechat());
            row1.createCell(17).setCellValue(customersForm.getEmail());
            row1.createCell(18).setCellValue(customersForm.getCreditCode());
            rowNum++;
        }
//        //6、写入本地
//        FileOutputStream outputStream = new FileOutputStream(fileName+".xlsx");
//        workbook.write(outputStream);
//        Long end = System.currentTimeMillis();
//        //7、关闭流
//        outputStream.close();
         // 设置文件MIME类型
        response.reset(); // 必要地清除response中的缓存信息
        response.setContentType(request.getServletContext().getMimeType(fileName));
        // response.setContentType("application/octet-stream");
        response.setContentType("application/msexcel;charset=utf-8");
        response.setHeader("name", fileName);
        response.setHeader("Cache-Control", "must-revalidate, post-check=0, pre-check=0");
        response.setHeader("Pragma", "public");
        response.setDateHeader("Expires", 0);
        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
        response.setHeader("Content-disposition",
                "attachment; filename=\"" + URLEncoder.encode(fileName, "UTF-8") + "\""+".xlsx");
        OutputStream osOut = response.getOutputStream();
        workbook.write(osOut);
        osOut.flush();
        osOut.close();
    }