diff --git a/src/main/java/xyz/playedu/api/controller/backend/CourseController.java b/src/main/java/xyz/playedu/api/controller/backend/CourseController.java
index 6619bb5..5d4371b 100644
--- a/src/main/java/xyz/playedu/api/controller/backend/CourseController.java
+++ b/src/main/java/xyz/playedu/api/controller/backend/CourseController.java
@@ -105,7 +105,7 @@ public class CourseController {
     @PostMapping("/create")
     @Transactional
     public JsonResponse store(@RequestBody @Validated CourseRequest req) throws ParseException {
-        if (req.getShortDesc() != null && req.getShortDesc().length() > 200) {
+        if (req.getShortDesc().length() > 200) {
             return JsonResponse.error("课程简短介绍不能超过200字");
         }
         Course course =
@@ -144,7 +144,7 @@ public class CourseController {
                 classHourCount = insertHours.size();
             }
         } else {
-            if (req.getChapters() == null || req.getChapters().size() == 0) {
+            if (req.getChapters().size() == 0) {
                 return JsonResponse.error("请配置课时");
             }
 
diff --git a/src/main/java/xyz/playedu/api/controller/backend/ResourceController.java b/src/main/java/xyz/playedu/api/controller/backend/ResourceController.java
index 55cc9c8..62de394 100644
--- a/src/main/java/xyz/playedu/api/controller/backend/ResourceController.java
+++ b/src/main/java/xyz/playedu/api/controller/backend/ResourceController.java
@@ -112,7 +112,7 @@ public class ResourceController {
         if(!type.equals(BackendConstant.RESOURCE_TYPE_VIDEO) &&
                 !type.equals(BackendConstant.RESOURCE_TYPE_IMAGE)){
             filter.setType(BackendConstant.RESOURCE_TYPE_ATTACHMENT);
-            data.put("existingType",resourceService.paginateType(filter));
+            data.put("existing_types",resourceService.paginateType(filter));
         }
         return JsonResponse.data(data);
     }