java为什么不支持事务。wasCommitted（）返回false？

Question

我不熟悉hibernate和java ee，我想知道是否有人能告诉我为什么这段代码返回false，即使从数据库中我可以看到事务实际上已提交：

    session.beginTransaction();
    session.saveOrUpdate(user);
    session.getTransaction().commit();
    return session.getTransaction().wasCommitted(); //Always false

谢谢

Answer 1

wasCommitted()不必总是返回true，即使提交成功。如果该事务（明确地）通过该本地事务committed，它将返回truefalse否则

从docs开始：

wasCommitted

This method could return false even after successful invocation of commit(). As an example, JTA based strategies no-op on commit() calls if they did not start the transaction; in that case, they also report wasCommitted() as false.