Hibernate——报错：org.hibernate.mapping.UnionSubclass cannot be cast to org.hibernate.mapping.RootClass
来源：互联网 发布：arm linux gcc 4.5.1 编辑：程序博客网 时间：2024/06/05 18:20
在使用Hibernate时，出现了如下错误：
Caused by: java.lang.ClassCastException: org.hibernate.mapping.UnionSubclass cannot be cast to org.hibernate.mapping.RootClass错误原因在于：
在父类中定义并配置了主键之后，又在子类中重复定义并配置了主键。
结果方法：
删除子类中主键及其配置。
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