Merge branch 'music_score'

mec-teacher/src/main/java/com/ym/mec/teacher/handler/WebSocketHandler.java

@@ -125,6 +125,9 @@ public class WebSocketHandler extends AbstractWebSocketHandler {
             recordInfo.add(new MusicPitchDetailDto(timeStamp, pitch));
         }));
         dispatcher.run();
+        if(Objects.isNull(userSoundInfoMap.get(phone).getAccessFile())){
+            return;
+        }
         double recordTime = userSoundInfoMap.get(phone).getAccessFile().length()/(audioFormat.getFrameSize()*audioFormat.getFrameRate())*1000;
         userSoundInfoMap.get(phone).setMeasureStartTime(recordTime);
         userSoundInfoMap.get(phone).getRecordMeasurePithInfo().addAll(recordInfo);