增加采购清单接口

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

@@ -145,7 +145,7 @@ public class ClassGroupServiceImpl extends BaseServiceImpl<Integer, ClassGroup>
 
             StudentRegistration studentRegistration = new StudentRegistration();
             studentRegistration.setClassGroupId(classGroup.getId());
-            studentRegistration.setUserId(Integer.getInteger(userId));
+            studentRegistration.setUserId(Integer.parseInt(userId));
             studentRegistration.setMusicGroupId(classGroup.getMusicGroupId());
             studentRegistrationDao.updateByUserIdAndMusicGroupId(studentRegistration);
         }