<button class="btn btn-danger m-r-5" id="exportClick"
style="width: 100px;margin-left:10px;">日报表</button>

ajax 请求后端

    $("#exportClick").click(function () {var url = '${basePath}/rest/cart/export'console.log('url ' + url);var a = document.createElement('a')a.href = encodeURI(url)a.setAttribute('target', '_blank')a.download = "日报表.xlsx";a.click();});

后端代码

    @RequestMapping(value = "/export")public void export(HttpServletResponse response, HttpServletRequest request) {service.export(response, request);}

导出实现逻辑

    @Overridepublic void export(HttpServletResponse response, HttpServletRequest request) {InputStream inputStream = null;OutputStream outputStream = null;try {XSSFWorkbook workbook = new XSSFWorkbook();//创建工作表sheeetXSSFSheet sheet = workbook.createSheet("数据处理结果");//创建第一行sheet.setColumnWidth(0, 3766);sheet.setColumnWidth(1, 3766);sheet.setColumnWidth(2, 5766);XSSFRow row = sheet.createRow(0);String[] title = {"日期", "营业额", "消费量"};XSSFCell cell_title;for (int i = 0; i < title.length; i++) {cell_title = row.createCell(i);cell_title.setCellValue(title[i]);}for (int i = 0; i < dayList.size(); i++) {XSSFRow createRow = sheet.createRow(i + 1);XSSFCell name = createRow.createCell(0);name.setCellValue(dayList.get(i));XSSFCell username = createRow.createCell(1);username.setCellValue(String.valueOf(amountList.get(i)));XSSFCell gender = createRow.createCell(2);gender.setCellValue(String.valueOf(countList.get(i)));}response.setHeader("content-disposition", "attachment;filename=day.xlsx");response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");outputStream = response.getOutputStream();workbook.write(outputStream);outputStream.flush();} catch (Exception e) {throw new RuntimeException(e);} finally {IOCloseUtils.close(inputStream);IOCloseUtils.close(outputStream);}}