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identifier of an instance of com.xjgx.domain.education.PropagandaDatail was altered from 8a82a6ef74b
時間 2021-01-06
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問題描述 jpa保存的時候報錯的 解決過程 期望:新增一條和PropagandaDatail除了id不一樣其他屬性,一模一樣的對象。 報錯代碼: 然後我又嘗試了一個copy對象的方法,新建了一個對象,還是不行 最後: 原因是當我查到這個PropagandaDatail對象的時候,我給他id質空了,因爲我想新增一條跟他一樣的,如果id不爲空的話,就會默認爲修改,改爲先copy完對象,然後再給對象id
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相關文章
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identifier of an instance of xx.entity was altered from xxKey@249e3cb2 to xxKey@74e8f4a3; nested exc
2.
【hibernate】錯誤:org.hibernate.HibernateException: identifier of an instance of com.agen.entity.Monthde...
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【IllegalArgumentException】: object is not an instance of declaring class
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Monitor類:Object synchronization method was called from an unsynchronized block of code.
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terminate called after throwing an instance of 'std::bad_alloc'
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object is not an instance of declaring class
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