我有一个使用Spring 3的应用程序,一切都很好。基本上客户想要将数据库从MySQL迁移到Oracle。所以一切都正确;问题出在Oracle的序列上。我尝试了各种方式来配置Hibernate,但总是出现错误。
org.hibernate.id.IdentifierGenerationException: ids for this class must be manually assi
gned before calling save():
org.hibernate.id.Assigned.generate(Assigned.java:52)
org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:117)
org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:206)
org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:191)
org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:114)
org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)
org.hibernate.internal.SessionImpl.fireSaveOrUpdate(SessionImpl.java:735)
org.hibernate.internal.SessionImpl.saveOrUpdate(SessionImpl.java:727)
org.hibernate.internal.SessionImpl.saveOrUpdate(SessionImpl.java:723)
it.openingcode.vwh.dao.AbstractHibernateDAOImpl.save(AbstractHibernateDAOImpl.java:48)
it.openingcode.vwh.dao.AbstractHibernateDAOImpl.save(AbstractHibernateDAOImpl.java:20)
it.openingcode.vwh.services.AbstractCrudServiceImpl.save(AbstractCrudServiceImpl.java:70)
it.openingcode.vwh.services.AbstractCrudServiceImpl.saveAll(AbstractCrudServiceImpl.java:77)
it.openingcode.vwh.services.PrivilegiServiceImpl.updateFromGruppo(PrivilegiServiceImpl.java:92)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:606)
在模型中,我添加了以下注释:
@Id
@GeneratedValue(strategy = GenerationType.AUTO, generator="my_entity_seq_gen")
@SequenceGenerator(name="my_entity_seq_gen", sequenceName="SEQ_PROFILI")
@Column(name = "ID")
private Long id;