Request processing failed; nested exception is org.springframework.dao.InvalidDataAccessApiUsageException: Multiple representations of the same entity解决方法

如果使用的Spring 管理hibernate， 在你的spring的数据源中配置

<prop key="hibernate.event.merge.entity_copy_observer">allow</prop>

具体参考：http://thinerzq.me/2016/02/01/Multiple-representations-of-the-same-entity-are-being-merged%E8%A7%A3%E5%86%B3%E6%96%B9%E6%B3%95/

Request processing failed; nested exception is org.springframework.dao.InvalidDataAccessApiUsageException: Multiple representations of the same entity解决方法

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