Hibernate 多对一XML配置问题

Question

异常：Caused by: org.hibernate.MappingException: Repeated column in mapping for entity: entity.StudentEntity column: gid (should be mapped with insert="false" update="false")
at org.hibernate.mapping.PersistentClass.checkColumnDuplication(PersistentClass.java:835)
at org.hibernate.mapping.PersistentClass.checkPropertyColumnDuplication(PersistentClass.java:853)
at org.hibernate.mapping.PersistentClass.checkColumnDuplication(PersistentClass.java:875)
at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:607)
at org.hibernate.mapping.RootClass.validate(RootClass.java:265)
at org.hibernate.boot.internal.MetadataImpl.validate(MetadataImpl.java:329)
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:459)
at org.hibernate.boot.internal.MetadataImpl.buildSessionFactory(MetadataImpl.java:170)

配置：

Answer 1

兄弟，从你说的来看，是因为你在Student实体多配置了一个gid,一对多的关系已经通过实体gradeEntity绑定，不需要定义gid了，把配置文件的name =gid
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