code: @GetMapping("/setting/download/api/excel/all")
      public void downloadApiAll(HttpServletRequest req, HttpServletResponse res) {
          this.validationSessionComponent.sessionCheck(req);
          PoiWorkBook workBook = this.msgExcelService.getAllExcels();
          workBook.writeFile("ValidationApis_" + System.currentTimeMillis(), res);
      }
docs: Download api all.
  
  @param req the req
  @param res the res