bug解决（1）

来源：互联网发布：淘宝卖家账号怎么注销编辑：程序博客网时间：2024/06/06 20:23

有时间bug是一件非常奇怪的事情，在你一秒没有解决的时候，出去转一圈或者干什么的bug就会被莫名奇妙的找出来，在此后的过程中，我打算总结自己曾经遇到的一些bug。

Caused by: java.lang.IllegalStateException: org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance before flushing : cn.itcast.bos.domain.base.Courier.standard -> cn.itcast.bos.domain.base.Standard
   at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1689)
   at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1602)
   at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1608)
   at org.hibernate.jpa.internal.EntityManagerImpl$CallbackExceptionMapperImpl.mapManagedFlushFailure(EntityManagerImpl.java:235)
   at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:2898)
   at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2270)
   at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:485)
   at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:146)
   at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$100(JdbcResourceLocalTransactionCoordinatorImpl.java:38)
   at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:230)
   at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:65)
   at org.hibernate.jpa.internal.TransactionImpl.commit(TransactionImpl.java:61)
   at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:517)
   ... 92 more
Caused by: org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance before flushing : cn.itcast.bos.domain.base.Courier.standard -> cn.itcast.bos.domain.base.Standard
   at org.hibernate.engine.spi.CascadingActions$8.noCascade(CascadingActions.java:381)
   at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:110)
   at org.hibernate.event.internal.AbstractFlushingEventListener.cascadeOnFlush(AbstractFlushingEventListener.java:150)
   at org.hibernate.event.internal.AbstractFlushingEventListener.prepareEntityFlushes(AbstractFlushingEventListener.java:141)
   at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:74)
   at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:38)
   at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1224)
   at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:464)
   at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:2894)
   ... 100 more

造成上面的原因无非就是自己的js代码或者是html代码出现错误或者是自己的bean 以及Action中查找一下错误，一般错误都是活出现在这里面了，当然了是在自己的java保证正确的前提之下的，所以在写java代码的时候，首先要保证自己的代码是正确的

下面是我的错误出现的原因，花了我半个小时的事件检查出来的

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