修改实训演练查询接口返回逻辑

src/main/java/com/sztzjy/financial_bigdata/controller/stu/ExerciseExperimentalTraining.java

@@ -121,7 +121,6 @@ public class ExerciseExperimentalTraining {
         }
 
         List<SysCourseDto> dtoList = new ArrayList<>();
-
         // 批量查询所有章节
         List<String> courseIds = sysCourseList.stream()
                 .map(SysTwoCatalog::getTwoId)
@@ -133,7 +132,16 @@ public class ExerciseExperimentalTraining {
             return new ResultEntity<>(HttpStatus.BAD_REQUEST, "资源中心根据课程IDList查询章节集合失败");
         }
         if (sysCourseChapters.isEmpty()) {
-            return null;
+            //三级为空返回二级的信息
+            for (SysTwoCatalog sysTwoCatalog : sysCourseList) {
+                SysCourseDto newDto = new SysCourseDto();
+                newDto.setCourseId(sysTwoCatalog.getTwoId());
+                newDto.setSequence(sysTwoCatalog.getSort());
+                newDto.setCourseName(sysTwoCatalog.getTwoName());
+                newDto.setSchoolId(sysTwoCatalog.getCreator());
+                dtoList.add(newDto);
+                return new ResultEntity<List<SysCourseDto>>(dtoList);
+            }
         }
 
         // 批量查询所有案例题步骤