1. bulid.gradle에 의존성 추가 compile 'org.apache.poi:poi:3.15' compile 'org.apache.poi:poi-ooxml:3.15' 2. Excel.java @RestController public class Excel { @Autowired ExcelService excelService; @RequestMapping(value = "/contentListDown") public void contentListDownload(HttpServletRequest request,HttpServletResponse response){ excelService.contentListDownload(request,response); } } 3. ExcelHandler.java ..