diff --git a/jeecg-boot/jeecg-boot-module/jeecg-module-aiol/src/main/java/org/jeecg/modules/aiol/constant/CourseSectionTypeConst.java b/jeecg-boot/jeecg-boot-module/jeecg-module-aiol/src/main/java/org/jeecg/modules/aiol/constant/CourseSectionTypeConst.java
new file mode 100644
index 00000000..6d3ee73a
--- /dev/null
+++ b/jeecg-boot/jeecg-boot-module/jeecg-module-aiol/src/main/java/org/jeecg/modules/aiol/constant/CourseSectionTypeConst.java
@@ -0,0 +1,10 @@
+package org.jeecg.modules.aiol.constant;
+
+public class CourseSectionTypeConst {
+    public static final int VIDEO = 0;
+    public static final int DOCUMENT = 1;
+    public static final int EXAM = 2;
+    public static final int HOMEWORK = 3;
+    public static final int EXERCISE = 4;
+    public static final int DISCUSSION = 5;
+}
diff --git a/jeecg-boot/jeecg-boot-module/jeecg-module-aiol/src/main/java/org/jeecg/modules/aiol/controller/AiolCourseController.java b/jeecg-boot/jeecg-boot-module/jeecg-module-aiol/src/main/java/org/jeecg/modules/aiol/controller/AiolCourseController.java
index f5215fc9..c112ed88 100644
--- a/jeecg-boot/jeecg-boot-module/jeecg-module-aiol/src/main/java/org/jeecg/modules/aiol/controller/AiolCourseController.java
+++ b/jeecg-boot/jeecg-boot-module/jeecg-module-aiol/src/main/java/org/jeecg/modules/aiol/controller/AiolCourseController.java
@@ -28,6 +28,7 @@ import org.jeecg.modules.aiol.service.IAiolClassService;
 import org.jeecg.modules.aiol.service.IAiolEntityPermissionService;
 import org.jeecg.modules.aiol.service.IAiolEntityLinkService;
 import org.jeecg.modules.aiol.constant.EntityPermissionConst;
+import org.jeecg.modules.aiol.constant.CourseSectionTypeConst;
 import org.jeecg.modules.aiol.constant.EntityLinkConst;
 import org.jeecg.modules.aiol.mapper.AiolCourseSignupMapper;
 import org.jeecg.modules.aiol.mapper.AiolCourseTeacherMapper;
@@ -471,32 +472,50 @@ public class AiolCourseController extends JeecgController<AiolCourse, IAiolCours
     }
 
     @GetMapping("/{courseId}/section_video/{sectionId}")
-    @Operation(summary = "查询视频章节详情", description = "该接口需要携带用户登录token。根据章节id查询章节详情，不同类型的章节，返回的内容不同")
+    @Operation(summary = "查询视频章节的关联对象详情", description = "该接口需要携带用户登录token。根据章节id查询章节详情，不同类型的章节，返回的内容不同")
     public Result<List<AiolResource>> querySectionDetail(@PathVariable(value = "courseId") String courseId,
             @PathVariable(value = "sectionId") String sectionId) {
-        // TODO GC 获取用户id，根据courseId判断当前用户是否报名课程，只有已报名的课程才能查看章节详情
-
-        List<AiolResource> list = aiolCourseService.getCourseSectionDetail(0, sectionId, AiolResource.class);
+        List<AiolResource> list = aiolCourseService.getCourseSectionDetail(CourseSectionTypeConst.VIDEO, sectionId, AiolResource.class);
         return Result.OK(list);
     }
 
     @GetMapping("/{courseId}/section_document/{sectionId}")
-    @Operation(summary = "查询文档章节详情", description = "该接口需要携带用户登录token。根据章节id查询章节详情，不同类型的章节，返回的内容不同")
+    @Operation(summary = "查询文档章节的关联对象详情", description = "该接口需要携带用户登录token。根据章节id查询章节详情，不同类型的章节，返回的内容不同")
     public Result<List<AiolResource>> querySectionDocumentDetail(@PathVariable(value = "courseId") String courseId,
             @PathVariable(value = "sectionId") String sectionId) {
-        // TODO GC 获取用户id，根据courseId判断当前用户是否报名课程，只有已报名的课程才能查看章节详情
+        List<AiolResource> list = aiolCourseService.getCourseSectionDetail(CourseSectionTypeConst.DOCUMENT, sectionId, AiolResource.class);
+        return Result.OK(list);
+    }
 
-        List<AiolResource> list = aiolCourseService.getCourseSectionDetail(1, sectionId, AiolResource.class);
+    @GetMapping("/{courseId}/section_exam/{sectionId}")
+    @Operation(summary = "查询考试章节的关联对象详情", description = "该接口需要携带用户登录token。根据章节id查询章节详情，不同类型的章节，返回的内容不同")
+    public Result<List<AiolExam>> querySectionExamDetail(@PathVariable(value = "courseId") String courseId,
+            @PathVariable(value = "sectionId") String sectionId) {
+        List<AiolExam> list = aiolCourseService.getCourseSectionDetail(CourseSectionTypeConst.EXAM, sectionId, AiolExam.class);
         return Result.OK(list);
     }
 
     @GetMapping("/{courseId}/section_homework/{sectionId}")
-    @Operation(summary = "查询作业章节详情", description = "该接口需要携带用户登录token。根据章节id查询章节详情，不同类型的章节，返回的内容不同")
+    @Operation(summary = "查询作业章节的关联对象详情", description = "该接口需要携带用户登录token。根据章节id查询章节详情，不同类型的章节，返回的内容不同")
     public Result<List<AiolHomework>> querySectionHomeworkDetail(@PathVariable(value = "courseId") String courseId,
             @PathVariable(value = "sectionId") String sectionId) {
-        // TODO GC 获取用户id，根据courseId判断当前用户是否报名课程，只有已报名的课程才能查看章节详情
+        List<AiolHomework> list = aiolCourseService.getCourseSectionDetail(CourseSectionTypeConst.HOMEWORK, sectionId, AiolHomework.class);
+        return Result.OK(list);
+    }
 
-        List<AiolHomework> list = aiolCourseService.getCourseSectionDetail(3, sectionId, AiolHomework.class);
+    @GetMapping("/{courseId}/section_exercise/{sectionId}")
+    @Operation(summary = "查询练习章节的关联对象详情", description = "该接口需要携带用户登录token。根据章节id查询章节详情，不同类型的章节，返回的内容不同")
+    public Result<List<AiolExam>> querySectionExerciseDetail(@PathVariable(value = "courseId") String courseId,
+            @PathVariable(value = "sectionId") String sectionId) {
+        List<AiolExam> list = aiolCourseService.getCourseSectionDetail(CourseSectionTypeConst.EXERCISE, sectionId, AiolExam.class);
+        return Result.OK(list);
+    }
+
+    @GetMapping("/{courseId}/section_discussion/{sectionId}")
+    @Operation(summary = "查询讨论章节的关联对象详情", description = "该接口需要携带用户登录token。根据章节id查询章节详情，不同类型的章节，返回的内容不同")
+    public Result<List<AiolDiscussion>> querySectionDiscussionDetail(@PathVariable(value = "courseId") String courseId,
+            @PathVariable(value = "sectionId") String sectionId) {
+        List<AiolDiscussion> list = aiolCourseService.getCourseSectionDetail(CourseSectionTypeConst.DISCUSSION, sectionId, AiolDiscussion.class);
         return Result.OK(list);
     }
 
diff --git a/jeecg-boot/jeecg-boot-module/jeecg-module-aiol/src/main/java/org/jeecg/modules/aiol/controller/AiolResourceController.java b/jeecg-boot/jeecg-boot-module/jeecg-module-aiol/src/main/java/org/jeecg/modules/aiol/controller/AiolResourceController.java
index 984e5ff5..99830c7b 100644
--- a/jeecg-boot/jeecg-boot-module/jeecg-module-aiol/src/main/java/org/jeecg/modules/aiol/controller/AiolResourceController.java
+++ b/jeecg-boot/jeecg-boot-module/jeecg-module-aiol/src/main/java/org/jeecg/modules/aiol/controller/AiolResourceController.java
@@ -236,7 +236,7 @@ public class AiolResourceController extends JeecgController<AiolResource, IAiolR
 
     @PostMapping("/video_upload")
     @Operation(summary = "课程视频文件上传", description = "课程视频文件上传，创建资源记录并关联到课程")
-    public Result<Map<String, Object>> upload(
+    public Result<AiolResource> upload(
             @RequestParam("file") MultipartFile file,
             @RequestParam("courseId") String courseId,
             @RequestParam("name") String name,
@@ -292,7 +292,7 @@ public class AiolResourceController extends JeecgController<AiolResource, IAiolR
             log.info("视频上传成功: resourceId={}, courseId={}, name={}", 
                     resource.getId(), courseId, name);
             
-            return Result.OK(resource.getId());
+            return Result.OK(resource);
         } catch (Exception e) {
             log.error("视频上传失败: courseId={}, name={}, error={}", 
                     courseId, name, e.getMessage(), e);
@@ -302,7 +302,7 @@ public class AiolResourceController extends JeecgController<AiolResource, IAiolR
 
     @PostMapping("/document_upload")
     @Operation(summary = "课程文档文件上传", description = "上传文档文件并关联到课程，支持word、ppt、excel、pdf、txt、markdown等格式")
-    public Result<String> uploadDocument(
+    public Result<AiolResource> uploadDocument(
             @RequestParam("file") MultipartFile file,
             @RequestParam("courseId") String courseId,
             @RequestParam("name") String name,
@@ -359,7 +359,7 @@ public class AiolResourceController extends JeecgController<AiolResource, IAiolR
             log.info("文档上传成功: resourceId={}, courseId={}, name={}", 
                     resource.getId(), courseId, name);
             
-            return Result.OK(resource.getId());
+            return Result.OK(resource);
             
         } catch (Exception e) {
             log.error("文档上传失败: courseId={}, name={}, error={}", 
@@ -370,7 +370,7 @@ public class AiolResourceController extends JeecgController<AiolResource, IAiolR
 
     @PostMapping("/image_upload")
     @Operation(summary = "课程图片文件上传", description = "上传图片文件并关联到课程，支持jpg、jpeg、png、gif、bmp、webp等格式")
-    public Result<String> uploadImage(
+    public Result<AiolResource> uploadImage(
             @RequestParam("file") MultipartFile file,
             @RequestParam("courseId") String courseId,
             @RequestParam("name") String name,
@@ -427,8 +427,7 @@ public class AiolResourceController extends JeecgController<AiolResource, IAiolR
             log.info("图片上传成功: resourceId={}, courseId={}, name={}", 
                     resource.getId(), courseId, name);
             
-            return Result.OK(resource.getId());
-            
+            return Result.OK(resource);
         } catch (Exception e) {
             log.error("图片上传失败: courseId={}, name={}, error={}", 
                     courseId, name, e.getMessage(), e);
diff --git a/jeecg-boot/jeecg-boot-module/jeecg-module-aiol/src/main/java/org/jeecg/modules/aiol/controller/AiolUserController.java b/jeecg-boot/jeecg-boot-module/jeecg-module-aiol/src/main/java/org/jeecg/modules/aiol/controller/AiolUserController.java
index 506000f4..6b139761 100644
--- a/jeecg-boot/jeecg-boot-module/jeecg-module-aiol/src/main/java/org/jeecg/modules/aiol/controller/AiolUserController.java
+++ b/jeecg-boot/jeecg-boot-module/jeecg-module-aiol/src/main/java/org/jeecg/modules/aiol/controller/AiolUserController.java
@@ -298,7 +298,8 @@ public class AiolUserController {
             // 4. 检查邀请码是否对应某个班级
             LambdaQueryWrapper<AiolClass> classQuery = new LambdaQueryWrapper<>();
             classQuery.eq(AiolClass::getInviteCode, inviteCode);
-            AiolClass targetClass = aiolClassService.getOne(classQuery);
+            // 允许存在重复邀请码时仅取第一条，避免抛出“期望1条结果却查询到多条”的异常
+            AiolClass targetClass = aiolClassService.getOne(classQuery, false);
             if (targetClass == null) {
                 return result.error500("邀请码无效，请检查邀请码是否正确");
             }