Merge branch 'zx_saas_goodsCopy' of http://git.dayaedu.com/yonge/mec into test

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

@@ -241,6 +241,8 @@ public class LessonCoursewareServiceImpl extends ServiceImpl<LessonCoursewareMap
                     }
                 }
             }
+            //剔除掉视频素材，且没有content的数据
+            materialList.removeIf(materialSmall -> materialSmall.getType() == EMaterialType.SONG && StringUtils.isEmpty(materialSmall.getContent()));
         }
     }
 }