Hibernate事务报错

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Transaction t1 = session.beginTransaction();t1.begin();session.save(oper);t1.commit();session.close(); 

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执行出错：

Exception in thread "main" org.hibernate.TransactionException: nested transactions not supported
??? at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.begin(AbstractTransactionImpl.java:152)
??? at com.szwx.test.Test.main(Test.java:57)
这个意思是不支持事务嵌套，因为这里?? Transaction t1 = session.beginTransaction();已经开启了事务，不能再

t1.begin()了，正确代码如下：

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Transaction t1 = session.beginTransaction();session.save(oper);t1.commit();session.close();

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