批量导入文件校验

ruoyi-admin/src/main/java/com/ruoyi/web/controller/wisdomarbitrate/CaseApplicationController.java

@@ -108,6 +108,9 @@ public class CaseApplicationController extends BaseController {
     @PreAuthorize("@ss.hasPermi('caseManagement:list:import')")
     @PostMapping("/importData")
     public AjaxResult importData(MultipartFile file) throws Exception {
+        if(file==null){
+            return warn("请上传文件");
+        }
         ExcelUtil<CaseApplication> util = new ExcelUtil<CaseApplication>(CaseApplication.class);
         List<CaseApplication> caseApplicationList = util.importExcel(file.getInputStream());
         String operName = getUsername();