今天上班，遇到这样一个异常
a different object with the same identifier value was already associated with the session:[com.risen.sms.entity.ThirdPartySw#22]
具有相同标识符的值是不同的对象已经与会话相关：从字面上的意思来看是2个不同的对象关联到了同一个标志位，也就是说在一个session中存在2个对象但这 2个对象的标志位是相同的，所以Hibernate不知道到底要去更新哪个对象。
解决办法：
1、在使用hibernate的位置，获取Session session
2、调用session.clear()方法
网上还有这样说的调用session.merge(Object)也能解决这个问题，但本人没有测试！
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