修改返回信息

ssj-kmt-exercise-service-impl/src/main/java/com/ssj/service/kmt/kmt/service/impl/KmtExerciseQuestionDealServiceImpl.java

@@ -78,7 +78,7 @@ public class KmtExerciseQuestionDealServiceImpl implements KmtExerciseQuestionDe
                         saveJSONFile(newQuestion, request, questionImage);
                         ThreadPool.getInstance().addTask(new SyncSaveExerciseBookTask(kmtExerciseMapper, exerciseQuestionSearchService, book.getBookId()));
                     } else {
-                        responseEntity.failure(ResponseConstant.CODE_000, "已存在大题号，请在大题号下直接添加小题");
+                        return responseEntity.failure(ResponseConstant.CODE_000, "当前课时已存在该大题号，请在大题号下添加小题");
                     }
                 }
             } else {