var str = "单元格1,单元格2,单元格3,单元格4,...";str += '\n';$.ajax({url: ".../downLoadToExcel",dataType: 'json',data: params,success: function (data) {for (var i = 0; i <data.length; i++) {for (var item in data[i]) {str += data[i][item] + '\t,';}str += '\n';}}});var uri = 'data:text/csv;charset=utf-8,\ufeff' + encodeURIComponent(str);//通过创建a标签实现var link = document.createElement("a");link.href = uri;//对下载的文件命名link.download = "导出Excel.csv";document.body.appendChild(link);link.click();document.body.removeChild(link);

@RequestMapping(value = "downLoadToExcel")public void downLoadToExcel(User user, HttpServletRequest request, HttpServletResponse response) throws IOException {
//    ZipOutputStream zipOutputStream = new ZipOutputStream(out);ServletOutputStream out = response.getOutputStream();try {List<Map<String, Object>> list = testService.downLoadToExcel(user);request.setCharacterEncoding("UTF-8");//Excel的行对应的类型名String[] header = {"","","",""};double len = list.size();int ys = 0;if (len < 60000) {ys = 1;} else {ys = (int) Math.ceil(len / 60000);}Workbook wb = new SXSSFWorkbook();response.setContentType("application/octet-stream; charset=utf-8");response.setHeader("Content-Disposition", "attachment; filename=" + Encodes.urlEncode("表名.xlsx"));for (int i = 0; i < ys; i++) {List<Map<String, Object>> bllist = new ArrayList<>();double bllen = (i + 1) * 60000;if (bllen > len) {bllen = len;}for (int j = i * 60000; j < bllen; j++) {bllist.add(list.get(j));}Sheet sheet = wb.createSheet("sheet" + i);Row r = sheet.createRow(0);for (int z = 0; z < header.length; z++) {Cell cell = r.createCell(z);cell.setCellValue(header[z]);}int rownum = 1;for (Map info : bllist) {LinkedHashMap lmap = (LinkedHashMap) info;Row row = sheet.createRow(rownum++);int number = 0;for (Iterator it = lmap.entrySet().iterator(); it.hasNext(); ) {Map.Entry<String, Object> entry = (Map.Entry<String, Object>) it.next();Cell cell = row.createCell(number++);cell.setCellValue(entry.getValue().toString());}}}
//            ZipEntry z = new ZipEntry("Excel名称" + ".xslx");
//            zipOutputStream.putNextEntry(z);
//            wb.write(zipOutputStream);
//            zipOutputStream.flush();wb.write(out);out.flush();} catch (Exception e) {//logger.info("错误信息");} finally {//注意关闭顺序，否则可能文件错误
//            if (zipOutputStream != null) {
//                zipOutputStream.close();
//            }if (out != null) {out.close();}}return;}

        var link = document.createElement("a");link.href ="/downLoadToExcel?cs1=1&cs2=2";document.body.appendChild(link);link.click();document.body.removeChild(link);