Initial SessionFactory creation failed.org.hibernate

Initial SessionFactory creation failed.org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]
Exception in thread "main" java.lang.ExceptionInInitializerError
at utils.HibernateUtil.buildSessionFactory(HibernateUtil.java:18)
at utils.HibernateUtil.(HibernateUtil.java:8)
at test.StudentAdd.main(StudentAdd.java:12)
Caused by: org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]
at org.hibernate.tuple.entity.EntityTuplizerFactory.constructTuplizer(EntityTuplizerFactory.java:110)
at org.hibernate.tuple.entity.EntityTuplizerFactory.constructDefaultTuplizer(EntityTuplizerFactory.java:135)
at org.hibernate.tuple.entity.EntityEntityModeToTuplizerMapping.(EntityEntityModeToTuplizerMapping.java:80)
at org.hibernate.tuple.entity.EntityMetamodel.(EntityMetamodel.java:323)
at org.hibernate.persister.entity.AbstractEntityPersister.(AbstractEntityPersister.java:456)
at org.hibernate.persister.entity.SingleTableEntityPersister.(SingleTableEntityPersister.java:131)
at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:84)
at org.hibernate.impl.SessionFactoryImpl.(SessionFactoryImpl.java:267)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1341)
at utils.HibernateUtil.buildSessionFactory(HibernateUtil.java:13)
... 2 more

Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]
Exception in thread "main" java.lang.ExceptionInInitializerError
at utils.HibernateUtil.buildSessionFactory(HibernateUtil.java:18)

tuplizer的构造有问题。

貌似是初始化创建sessionfactory失败，也可能是用juit测试的main方法里面的错