线上部分空指针异常处理

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

@@ -3536,6 +3536,9 @@ public class MusicGroupServiceImpl extends BaseServiceImpl<String, MusicGroup> i
     @Override
     public MusicGroup getMusicGroupDetail(String musicGroupId) {
         MusicGroup musicGroup = musicGroupDao.get(musicGroupId);
+        if(musicGroup == null){
+            throw new BizException("乐团信息不存在");
+        }
         musicGroup.setEducationalTeacherName(teacherDao.queryNameById(musicGroup.getEducationalTeacherId()));
         musicGroup.setTeamTeacherName(teacherDao.queryNameById(musicGroup.getTeamTeacherId()));
         musicGroup.setDirectorUserName(teacherDao.queryNameById(musicGroup.getDirectorUserId()));

mec-web/src/main/java/com/ym/mec/web/controller/MusicGroupController.java

@@ -334,6 +334,9 @@ public class MusicGroupController extends BaseController {
 	@ApiImplicitParams({@ApiImplicitParam(name = "musicGroupId", value = "乐团编号", required = true, dataType = "String")})
 	public HttpResponseResult<Map<Integer,String>> getGradeList(String musicGroupId) {
 		MusicGroup musicGroup = musicGroupService.get(musicGroupId);
+		if (musicGroup == null) {
+			return failed("乐团信息不存在");
+		}
 		return succeed(organizationService.getGradeList(musicGroup.getOrganId()));
 	}