a different object with the same identifier value was already associated with the session
2017-03-06 10:10
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我用hibernate执行update操作时出现了这个错误，根据错误提示，知道原因是session中存在一个id与我要更新对象相同的对象、但不是同一个对象。解决办法是调用session.clear()方法来清空session中的缓存，然后执行更新。
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