我正在尝试使用 HQL 查询更新记录，但我收到了 CastException。
如果有人可以帮助我，我将不胜感激。
我已经在网上查了一段时间，但我找不到这方面的任何信息。
如果您有关于此异常的更多信息，请告诉我。
返回的完整错误信息:
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: org.hibernate.hql.ast.tree.SqlNode cannot be cast to org.hibernate.hql.ast.tree.FromReferenceNode
at org.hibernate.hql.ast.HqlSqlWalker.generateSyntheticDotNodeForNonQualifiedPropertyRef(HqlSqlWalker.java:495)
at org.hibernate.hql.ast.HqlSqlWalker.lookupNonQualifiedProperty(HqlSqlWalker.java:488)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.propertyRef(HqlSqlBaseWalker.java:1102)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.assignment(HqlSqlBaseWalker.java:1008)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.setClause(HqlSqlBaseWalker.java:729)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.updateStatement(HqlSqlBaseWalker.java:349)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:237)
at org.hibernate.hql.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:228)
at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:160)
at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:111)
at org.hibernate.engine.query.HQLQueryPlan.(HQLQueryPlan.java:77)
at org.hibernate.engine.query.HQLQueryPlan.(HQLQueryPlan.java:56)
at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:72)
at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:133)
at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:112)
at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1623)
at Database.HibernateConnection.updateFlight(HibernateConnection.java:161)
at Controller.Controller.ChangeFlight(Controller.java:527)
at View.CreateChangeFlightView.btnSaveActionPerformed(CreateChangeFlightView.java:738)
at View.CreateChangeFlightView.access$1000(CreateChangeFlightView.java:45)
at View.CreateChangeFlightView$6.actionPerformed(CreateChangeFlightView.java:299)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
at java.awt.Component.processMouseEvent(Component.java:6263)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
at java.awt.Component.processEvent(Component.java:6028)
at java.awt.Container.processEvent(Container.java:2041)
at java.awt.Component.dispatchEventImpl(Component.java:4630)
at java.awt.Container.dispatchEventImpl(Container.java:2099)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4574)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
at java.awt.Container.dispatchEventImpl(Container.java:2085)
at java.awt.Window.dispatchEventImpl(Window.java:2478)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
查询:删除
最佳答案
问题是因为from是HQL中的保留字。由于无法在 HQL 中转义关键字，因此唯一可能的解决方案是重命名该字段。
关于java.lang.ClassCastException : org. hibernate.hql.ast.tree.SqlNode 无法转换为 org.hibernate.hql.ast.tree.FromReferenceNode，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/7716729/