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我試圖做一個StatelessSession的簡單保存。有人可以發現我做錯了，最終導致Hibernate方法嘗試對Session執行無效的StatelessSession轉換。我會很感激任何反饋。StatelessSession被轉換爲AbstractEntityPersister中的會話（休眠）
我的示例代碼： StatelessSession statelessSession = getSessionFactory().openStatelessSession(); Transaction tx = statelessSession.beginTransaction(); Object ret = null; try { ret = statelessSession.insert(obj); tx.commit(); statelessSession.close();
} catch (Throwable t) { System.out.println("exception: " + t.getMessage()); tx.rollback(); } return (T) ret;
在.insert（OBJ）調用發生的異常。跟蹤代碼登陸我在嘗試將要StatelessSession轉換爲會話此方法中的AbstractEntityPersister類：
private void preInsertInMemoryValueGeneration(Object[] fields, Object object, SessionImplementor session) {
if (getEntityMetamodel().hasPreInsertGeneratedValues()) {
final InMemoryValueGenerationStrategy[] strategies = getEntityMetamodel().getInMemoryValueGenerationStrategies();
for (int i = 0; i < strategies.length; i++) {
if (strategies[i] != null && strategies[i].getGenerationTiming().includesInsert()) {
fields[i] = strategies[i].getValueGenerator().generateValue((Session) session, object); // <-- bad cast here
setPropertyValue(object, i, fields[i]);
}
}
}
}
這裏有一個堆棧跟蹤：
java.lang.ClassCastException: org.hibernate.internal.StatelessSessionImpl cannot be cast to org.hibernate.Session
at org.hibernate.persister.entity.AbstractEntityPersister.preInsertInMemoryValueGeneration(AbstractEntityPersister.java:3591)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3568)
at org.hibernate.internal.StatelessSessionImpl.insert(StatelessSessionImpl.java:144)
at org.hibernate.internal.StatelessSessionImpl.insert(StatelessSessionImpl.java:123)
at com.mycompany.somepackage.dao.impl.CommonDAOImpl.persist2(CommonDAOImpl.java:242)
at com.mycompany.somepackage.publisher.ScJournalPublisher.publish(ScJournalPublisher.java:37)
at com.mycompany.somepackage.annotation.callback.CallbackInvoker.invokePublisherCallback(CallbackInvoker.java:92)
at com.mycompany.somepackage.event.listener.DaPostInsertUpdateEventListener.onPostInsert(DaPostInsertUpdateEventListener.java:51)
at org.hibernate.action.internal.EntityInsertAction.postInsert(EntityInsertAction.java:177)
at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:145)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:465)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:351)
at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:350)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:56)
at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1258)
at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:425)
at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit(JdbcTransaction.java:101)
at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:177)
at org.springframework.orm.hibernate4.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:584)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:757)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:726)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:521)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:291)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:653)
請堆棧跟蹤添加到上述問題的 –
堆棧跟蹤加入。謝謝... – longtimer