org.hibernate.criteria.uniqueResult期间的AssertionFailure

Question

我正在从一个名为 pHistory 的表中选择数据，该表与 CenterLog 实体没有任何关系，但是，我仍然收到 hibernate 错误，抱怨 CenterLog 实体中的 null id。

日志如下：

org.hibernate.AssertionFailure: null id in com.audit.entity.CenterLog entry (don't flush the Session after an exception occurs)
    at org.hibernate.event.def.DefaultFlushEntityEventListener.checkId(DefaultFlushEntityEventListener.java:78) ~[hibernate-core-3.3.1.GA.jar:3.3.1.GA]
    at org.hibernate.event.def.DefaultFlushEntityEventListener.getValues(DefaultFlushEntityEventListener.java:187) ~[hibernate-core-3.3.1.GA.jar:3.3.1.GA]
    at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:143) ~[hibernate-core-3.3.1.GA.jar:3.3.1.GA]
    at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:219) ~[hibernate-core-3.3.1.GA.jar:3.3.1.GA]
    at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:99) ~[hibernate-core-3.3.1.GA.jar:3.3.1.GA]
    at org.hibernate.event.def.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:58) ~[hibernate-core-3.3.1.GA.jar:3.3.1.GA]
    at org.hibernate.impl.SessionImpl.autoFlushIfRequired(SessionImpl.java:996) ~[hibernate-core-3.3.1.GA.jar:3.3.1.GA]
    at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1589) ~[hibernate-core-3.3.1.GA.jar:3.3.1.GA]
    at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:306) ~[hibernate-core-3.3.1.GA.jar:3.3.1.GA]
    at org.hibernate.impl.CriteriaImpl.uniqueResult(CriteriaImpl.java:328) ~[hibernate-core-3.3.1.GA.jar:3.3.1.GA]

据我了解， uniqueResult 没有做任何保存事件，但不确定我是否仍在点击它。

Answer 1

错误消息说(don't flush the Session after an exception occurs) ：之前有另一个异常，它是问题的原因。

您需要找到其他异常并修复它。