hibernate 插入Sql Server时报的错误信息，能告诉我这是什么地方出错了？

Question

严重: Servlet.service() for servlet action threw exception
org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: y2shh.wzf.entity.TUser
at org.hibernate.engine.ForeignKeys.getEntityIdentifierIfNotUnsaved(ForeignKeys.java:216)
at org.hibernate.type.EntityType.getIdentifier(EntityType.java:99)
at org.hibernate.type.EntityType.isDirty(EntityType.java:216)
at org.hibernate.type.TypeFactory.findDirty(TypeFactory.java:412)
at org.hibernate.persister.entity.BasicEntityPersister.findDirty(BasicEntityPersister.java:2538)
at org.hibernate.event.def.DefaultFlushEntityEventListener.dirtyCheck(DefaultFlushEntityEventListener.java:344)
at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:108)
at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:190)
at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:70)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:26)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:730)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:324)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:86)
at org.springframework.orm.hibernate3.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:578)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:662)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:632)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:314)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:116)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy1.save(Unknown Source)

Answer 1

错误原因是持久化对象的属性引用了一个临时对象 y2shh.wzf.entity.TUser
当 Hibernate持久化一个临时对象时，在默认情况下，它不会自动持久化所关联的其他临时对象，所以会抛出 TransientObjectException异常。如果希望当 Hibernate持久化 Monkey对象时自动持久化所关联的 Team对象，可以把<many-to-one>的 cascade 属性设为“save-update”，cascade 属性的默认值为“none”

Answer 2

恩，谢了 插入时 引用了一个临时对象 y2shh.wzf.entity.TUser 把多对一 cascade属性设为ALL
就行了