错误： Repeated column in mapping for entity: com.hibernateOut.entity.Orderitem column: oid (should be mapped with insert=“false” update=“false”)
Caused by: org.hibernate.MappingException: Repeated column in mapping for entity: com.hibernateOut.entity.Orderitem column: oid (should be mapped with insert="false" update="false") at org.hibernate.mapping.PersistentClass.checkColumnDuplication(PersistentClass.java:764) at org.hibernate.mapping.PersistentClass.checkPropertyColumnDuplication(PersistentClass.java:782) at org.hibernate.mapping.PersistentClass.checkColumnDuplication(PersistentClass.java:804) at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:539) 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:443) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:708) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:724) at com.strurts.utli.HibernateUtils.<clinit>(HibernateUtils.java:23) ... 25 more原因： 这是因为在Hibernate 一对多关系新增中 重复映射实体类的列
解决方法： 在property 中加入属性：insert=“false” update=“false”
<property name="oid" type="java.lang.Integer" column="oid" insert="false" update="false"/>