jpa 问题，persist报javax.persistence.EntityExistsException: Cannot persist detached

2009年7月15日 - jpa 问题,persist报javax.persistence.EntityExistsException: Cannot persist detached10 代码:utx.begin();Query query = em.createQuery("SELE...

...-> javax.persistence.EntityExistsException: User@b3089 is ...

javax.persistence.EntityExistsException - JPA exception

[专业]答案:persist(),是保存,跟save()方法一样,知识jpa官方说叫persist比较好一些,更接近...EntityManager在persist它的时候就会抛出异常:javax.persistence.EntityExistsException...更多关于jpa 问题,persist报javax.persistence.EntityExistsException: Cannot persist de的问题>&

Error : javax.persistence.EntityExistsException - CodeProject

javax.persistence.PersistenceException: org.hibernate.PersistentObjectException: detached entity passed to persist: com.ty.JsefEntity实体对象id@GeneratedV...

...JPA transaction; nested exception is javax.persistence...

2009年5月14日 - 再用jpa+spring+struts2开发的是时候遇到一个问题(采用了注解的方式,xml配置的...javax.persistence.PersistenceException: org.hibernate.Persistent...