浏览器下载json普通文件

 /*** 设备模型导出(带分组).** @param request  请求* @param response 响应*/@ProjectResource@Operation(summary = "设备模型导出(带分组)")@PostMapping("/export")@AuditLog(source = AuditSourceType.PLATFORM, operationEvent = "设备模型导出(带分组)", resourceType = "${knife4j.openapi.description}",operType = AuditOperationType.EXPORT)public void exportWithGroup(HttpServletRequest request, HttpServletResponse response) {var user = SecurityUtils.getCurrentUser();bizTypeService.exportWithGroup(request, response, user);}@Overridepublic void exportWithGroup(HttpServletRequest request, HttpServletResponse response, SecurityUser user) {// 1. 组合数据ExportDto exportDto = new ExportDto();exportDto.setTypes(types);exportDto.setGroups(groups);// 2. 下载PrintWriter writer = null;try {response.setContentType("application/octet-stream");response.setCharacterEncoding("utf-8");response.setHeader("content-disposition", "download;filename*=utf-8''" + URLEncoder.encode("device_model_type.json", "UTF-8"));writer = response.getWriter();writer.write(JacksonUtils.writeValueAsString(exportDto));} catch (Exception e) {throw new RuntimeException(e);} finally {writer.close();}}

浏览器下载excel文件【借助Workbook】

     @Overridepublic void exportRunningRecords(HttpServletRequest request, HttpServletResponse response) {// 1.  查询数据     List<RunningRecordsDto> data = resultDto.getItems();// 2. 导出数据List<String> headers = new ArrayList<>();headers.add("设备名称");headers.add("设备编号");headers.add("所属模型");headers.add("安装位置");headers.add("服务范围");headers.add("运行次数");headers.add("运行时长");List<List<Object>> dataList = new ArrayList<>();for (RunningRecordsDto item : data) {List<Object> list = new ArrayList<>();list.add(item.getName());list.add(item.getCode());list.add(item.getTypeName());list.add(item.getLocationName());list.add(item.getServiceArea());list.add(item.getCounts());list.add(item.getDuration());dataList.add(list);}try {ExcelUtils.writeExcel(headers, dataList, "设备运行记录.xlsx", request, response);} catch (Exception e) {log.error("设备运行记录导出异常", e);}}/*** 导出最精简的excel.** @param headers  (不是必填) excel头列 比如: 姓名  年龄  性别 ..* @param datas    (必填) 数据列(请确保和列的顺序保持一致)* @param fileName 生成excel的文件名称，如果不传则默认为随机生成* @param request  HttpServletRequest* @param response HttpServletResponse* @throws Exception 异常*/public static void writeExcel(List<String> headers, List<List<Object>> datas, String fileName,HttpServletRequest request, HttpServletResponse response) throws Exception {Workbook workbook = generateWorkBook(headers, datas);// 文件名处理一下//设置编码final String userAgent = request.getHeader("USER-AGENT");if (StringUtils.contains(userAgent, MSIE) || StringUtils.contains(userAgent, "Trident") || StringUtils.contains(userAgent, "Edge")) {fileName = new String(URLEncoder.encode(fileName, "UTF-8").getBytes("UTF-8"), "ISO-8859-1");} else if (StringUtils.contains(userAgent, MOZILLA)) {fileName = URLEncoder.encode(fileName, "UTF-8");}response.reset(); // 清空responseresponse.setContentType(XLSX_CONTENT_TYPE);response.setHeader("content-disposition", "attachment;filename=" + fileName);response.setCharacterEncoding("UTF-8");// 文件流输出try {workbook.write(response.getOutputStream());} catch (IOException e) {throw new IOException("could not write to response. cause: ", e);} finally {if (workbook != null) {workbook.close();}}}// 详见ExcelUtils.java