网络教室伴奏

mec-im/src/main/java/com/ym/service/Impl/RoomServiceImpl.java

@@ -230,7 +230,7 @@ public class RoomServiceImpl implements RoomService {
         }
         //已下载的伴奏列表
         if(scheduleStudentMusicScores != null && scheduleStudentMusicScores.size() > 0){
-            userResult.setScheduleStudentMusicScores(scheduleStudentMusicScores.stream().filter(e->e.getUserId().equals(sysUser.getId())).collect(Collectors.toList()));
+            userResult.setScheduleStudentMusicScores(new ArrayList<>(scheduleStudentMusicScores.stream().filter(e->e.getUserId().equals(sysUser.getId())).collect(Collectors.toList())));
         }
 
         userResult.setUserName(userName);