ye olde“org.hibernate.NonUniqueObjectException”......我对此感到难过

时间：2012-04-17 19:36:14

标签： java spring hibernate

这是错误：

org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: [com.project.lmu.data.entity.Company#02K]
    org.hibernate.engine.StatefulPersistenceContext.checkUniqueness(StatefulPersistenceContext.java:638)
    org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:305)
    org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsDetached(DefaultSaveOrUpdateEventListener.java:246)
    org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:112)
    org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)
    org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:685)
    org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:677)
    org.hibernate.engine.CascadingAction$5.cascade(CascadingAction.java:252)
    org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:392)
    org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:335)
    org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:204)
    org.hibernate.engine.Cascade.cascade(Cascade.java:161)
    org.hibernate.engine.Cascade.cascade(Cascade.java:127)
    org.hibernate.event.def.DefaultSaveOrUpdateEventListener.cascadeOnUpdate(DefaultSaveOrUpdateEventListener.java:376)
    org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:350)
    org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsDetached(DefaultSaveOrUpdateEventListener.java:246)
    org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:112)
    org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)
    org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:685)
    org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:677)
    org.hibernate.engine.CascadingAction$5.cascade(CascadingAction.java:252)
    org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:392)
    org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:335)
    org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:204)
    org.hibernate.engine.Cascade.cascade(Cascade.java:161)
    org.hibernate.engine.Cascade.cascade(Cascade.java:127)
    org.hibernate.event.def.DefaultSaveOrUpdateEventListener.cascadeOnUpdate(DefaultSaveOrUpdateEventListener.java:376)
    org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:350)
    org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsDetached(DefaultSaveOrUpdateEventListener.java:246)
    org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:112)
    org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)
    org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:685)
    org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:677)
    org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:673)
    com.project.lmu.data.dao.hibernate.AbstractHibernateDAO.saveOrUpdate(AbstractHibernateDAO.java:172)
    com.project.lmu.data.tx.AbstractTxService.update(AbstractTxService.java:68)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    java.lang.reflect.Method.invoke(Method.java:597)
    org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)
    org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
    org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
    $Proxy48.update(Unknown Source)
    com.project.lmu.data.service.impl.CoworkerServiceImpl.genUpdateNomination(CoworkerServiceImpl.java:175)
    com.project.lmu.controller.coworkerNom.CoworkerController.genUpdateNomination(CoworkerController.java:305)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    java.lang.reflect.Method.invoke(Method.java:597)
    org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:212)
    org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)
    org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)
    org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)
    org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)
    org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
    org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:311)
    org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:116)
    org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
    org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
    org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:101)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
    org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
    org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
    org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
    org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:182)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
    org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
    org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
    org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:125)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
    org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:173)
    org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
    org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)

现在这是失败的方法：

public void genUpdateNomination(int nominationId, int statusId, String generalistComment, int generalistId) {
        CoworkerNom nom = coworkerNomTxService.findById(nominationId);
        Status status = statusTxService.findById(statusId);
        if (!(nom.getStatus() == status && nom.getGeneralistComment().equals(generalistComment))) {
            if (statusId == 2) {
                //Approved so do email
            }

            if (statusId == 3) {
                //Does Not Proceed so do email
            }

            if (statusId == 4) {
                //Incomplete so do email
            }

            Employee generalist = employeeTxService.findById(generalistId);

            nom.setGeneralist(generalist);
            nom.setGeneralistComment(generalistComment);
            nom.setStatus(status);
            nom.setUpdatedBy(generalist);
            coworkerNomTxService.update(nom);
        }
    }

现在我将其归结为实体Employee和Nomination的{​​{1}}和Nominator（也是员工对象）。这是Nominee：

Nomination

这是@Entity(name = "Nomination") @Table(name = "NOMINATION") @DiscriminatorColumn(name="CATEGORY_CODE", discriminatorType = DiscriminatorType.STRING, length = 1) @Inheritance(strategy=InheritanceType.JOINED) public /*abstract*/ class Nomination extends AuditableEntity { @Id @Column(name = "NOM_ID", insertable = true, updatable = true, nullable = false) @GeneratedValue(strategy = GenerationType.AUTO) private int id; @ManyToOne(fetch = FetchType.EAGER, cascade = {CascadeType.PERSIST, CascadeType.MERGE}) @JoinColumn(name = "NOMINATOR_ID", referencedColumnName = "EMP_ID") @Cascade({org.hibernate.annotations.CascadeType.SAVE_UPDATE, org.hibernate.annotations.CascadeType.MERGE}) private Employee nominator = null; @ManyToOne(fetch = FetchType.EAGER, cascade = {CascadeType.PERSIST, CascadeType.MERGE}) @JoinColumn(name = "GENERALIST_ID", referencedColumnName = "EMP_ID", nullable = true) @Cascade({org.hibernate.annotations.CascadeType.SAVE_UPDATE, org.hibernate.annotations.CascadeType.MERGE}) private Employee generalist = null; ：

Employee

现在这些对象在我的应用程序中使用了TON方法。事实上，我刚刚在上一个方法/添加中遇到了这个错误，以便进入测试/测试用例模式。

如果我必须粘贴更多方法，请告诉我。我不知道是什么原因引起的。这里唯一的新功能是设置@Entity(name = "Employee") @Table(name = "EMPLOYEE") public class Employee implements Serializable { @Id @Column(name = "EMP_ID", insertable = true, updatable = false, nullable = false) private int id; @ManyToOne(fetch = FetchType.EAGER, cascade = {CascadeType.PERSIST, CascadeType.MERGE}) @JoinColumn(name = "COMPANY_CODE", referencedColumnName = "COMPANY_CODE") @Cascade({org.hibernate.annotations.CascadeType.SAVE_UPDATE, org.hibernate.annotations.CascadeType.MERGE}) private Company company = null; 。

3 个答案:

答案 0 :(得分：1)

我遇到过同样的错误一次。它出现在多个到一个或多个关系中，主要原因是一个对象在一个会话中打开，但它在另一个会话中被引用到另一个对象。我希望这reference有所帮助。

答案 1 :(得分：1)

我在尝试了很多事情之后解决了这个问题，但最终工作的是取代它：

       coworkerNomTxService.update(nom);

merge()如下：

       coworkerNomTxService.merge(nom);

我发布在这里，所以希望如果你得到同样的错误，你将首先尝试这种方法。如果不是，请尝试检查CascadeType是否设置为ALL和。

答案 2 :(得分：0)

我经常做的第一件事是在session.getStatistics().getEntityKeys()方法调用之前调用session.update()并查看是否有任何重复的对象。如果是，请使用相同的方法追踪它。

其次，确保更新的对象＆＃39;儿童集合（如果有的话）没有相同的ID。

希望有所帮助

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