JPA使用中级联删除,出现了异常

[secondfirstlife]

严重: Servlet.service() for servlet default threw exception
org.hibernate.ObjectDeletedException: deleted entity passed to persist: [net.aykj.pojo.Expert#<null>]
at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:113)
at org.hibernate.impl.SessionImpl.firePersistOnFlush(SessionImpl.java:672)
at org.hibernate.impl.SessionImpl.persistOnFlush(SessionImpl.java:664)
at org.hibernate.engine.CascadingAction$9.cascade(CascadingAction.java:346)
at org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:292)
at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:240)
at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:193)
at org.hibernate.engine.Cascade.cascadeCollectionElements(Cascade.java:320)
at org.hibernate.engine.Cascade.cascadeCollection(Cascade.java:266)
at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:243)
at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:193)
at org.hibernate.engine.Cascade.cascade(Cascade.java:154)
at org.hibernate.event.def.AbstractFlushingEventListener.cascadeOnFlush(AbstractFlushingEventListener.java:154)
at org.hibernate.event.def.AbstractFlushingEventListener.prepareEntityFlushes(AbstractFlushingEventListener.java:145)
at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:88)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:49)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1028)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:366)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:137)
at org.hibernate.ejb.TransactionImpl.commit(TransactionImpl.java:54)

[fengyingkong]

在更新一对多关系对象中的一的一方，如果涉及到多的一方，特别是要删除多的一方的某些对象， 则必须要先从集合中剔除，然后断开关系，最后删除

[secondfirstlife]

帖子我看了好多了,就是搞不定我的这个,我里边关系有些多,一个表关联了好多的SET

[secondfirstlife]

Expert article = expertDAO.queryById(id); if(article != null) { String picture = article.getPicture(); String videoPath = article.getVideoPath(); Set<ExpertMessage> expertMessages=article.getExpertMessages(); Set<WorkTime> workTimes=article.getWorkTimes(); Set<OnlineBook> onlineBooks=article.getOnlineBooks(); Set<ExpertPicture> expertPictures=article.getPictures(); for(ExpertMessage e:expertMessages){ //article.getExpertMessages().remove(e); e.getExpert().getExpertMessages().remove(e); expertMessageDAO.remove(ExpertMessage.class, e.getId()); } for(OnlineBook e:onlineBooks){ //article.getOnlineBooks().remove(e); e.getExpert().getOnlineBooks().remove(e); onlineBookDAO.remove(OnlineBook.class, e.getId()); } for(ExpertPicture e:expertPictures){ e.getExpert().getPictures().remove(e); expertPictureDAO.remove(ExpertPicture.class, e.getId()); //article.getPictures().remove(e); } for(WorkTime e:workTimes){ e.getExpert().getWorkTimes().remove(e); workTimeDAO.remove(WorkTime.class, e.getId()); //article.getWorkTimes().remove(e); } expertDAO.remove(article); if(picture != null) { FileUtil.deleteFile(getFileBasePath() + picture); } if(videoPath != null) { FileUtil.deleteFile(getFileBasePath() + videoPath); } } 各种删不掉,试各种方法啊

[secondfirstlife]

这个我也知道啊,我配置一对多关系里边全是ALL的, 不应该啊

[笑莫问]

http://blog.sina.com.cn/s/blog_a2de16f4010150ns.html 参考下吧，1楼的估计是copy这的