老师确认增加群组

mec-biz/src/main/java/com/ym/mec/biz/service/impl/MusicGroupServiceImpl.java

@@ -156,10 +156,9 @@ public class MusicGroupServiceImpl extends BaseServiceImpl<String, MusicGroup> i
             studentRegistrationService.batchInsert(studentRegistrationList);
         }
         // 保存乐团声部商品规划
-        if (musicGroupSubjectGoodsGroups == null) {
-            musicGroupSubjectGoodsGroups = new ArrayList<>();
+        if (musicGroupSubjectGoodsGroups != null) {
+            musicGroupSubjectGoodsGroupDao.batchInsert(musicGroupSubjectGoodsGroups,musicGroupId);
         }
-        musicGroupSubjectGoodsGroupDao.batchInsert(musicGroupSubjectGoodsGroups,musicGroupId);
         // 新增聊天群
         // ImGroupModel imGroupModel = new ImGroupModel(musicGroupId, musicGroup.getName());
         // 教务老师和运营主管加入群组