Java Hibernate实体的更新/编辑工作不正常
我尝试了团队和团队成员的所有级联类型组合，但仍然无法使用手动/Selenium测试更新/编辑给定的团队成员。问题似乎出在hibernate上：Java Hibernate实体的更新/编辑工作不正常,java,hibernate,spring-mvc,selenium,Java,Hibernate,Spring Mvc,Selenium,我尝试了团队和团队成员的所有级联类型组合，但仍然无法使用手动/Selenium测试更新/编辑给定的团队成员。问题似乎出在hibernate上： SEVERE: Servlet.service() for servlet [dispatcher] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.dao.DuplicateKeyExc
SEVERE: Servlet.service() for servlet [dispatcher] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.dao.DuplicateKeyException: A different object with the same identifier value was already associated with the session : [com.sprhib.model.TeamMember#1]; nested exception is org.hibernate.NonUniqueObjectException: A different object with the same identifier value was already associated with the session : [com.sprhib.model.TeamMember#1]] with root cause
org.hibernate.NonUniqueObjectException: A different object with the same identifier value was already associated with the session : [com.sprhib.model.TeamMember#1]
at org.hibernate.engine.internal.StatefulPersistenceContext.checkUniqueness(StatefulPersistenceContext.java:617)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:301)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsDetached(DefaultSaveOrUpdateEventListener.java:244)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:109)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)
at org.hibernate.internal.SessionImpl.fireSaveOrUpdate(SessionImpl.java:684)
at org.hibernate.internal.SessionImpl.saveOrUpdate(SessionImpl.java:676)
at org.hibernate.engine.spi.CascadingActions$5.cascade(CascadingActions.java:235)
at org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:350)
at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:293)
at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:161)
at org.hibernate.engine.internal.Cascade.cascadeCollectionElements(Cascade.java:379)
at org.hibernate.engine.internal.Cascade.cascadeCollection(Cascade.java:319)
at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:296)
at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:161)
at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:118)
at org.hibernate.event.internal.AbstractFlushingEventListener.cascadeOnFlush(AbstractFlushingEventListener.java:167)
at org.hibernate.event.internal.AbstractFlushingEventListener.prepareEntityFlushes(AbstractFlushingEventListener.java:158)
at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:91)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:55)
at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1222)
at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:425)
at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit(JdbcTransaction.java:101)
at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:177)
at org.springframework.orm.hibernate4.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:584)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:757)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:726)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:515)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:291)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
at com.sun.proxy.$Proxy46.updateTeamMember(Unknown Source)
at com.sprhib.controller.TeamMemberController.editingTeamMember(TeamMemberController.java:75)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:777)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:706)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
合并解决了问题。请尝试下面的代码。它可能会起作用。我不确定
@Transactional(propagation=Propagation.REQUIRED,readOnly=false)
public void updateTeamMember(TeamMember teamMember) {
// get all teams related to teamMember
// for each team:
// if team doesn't have this team member then add
synchronized (this){
Iterator<Team> iteratorTeams = teamMember.getTeams().iterator();
while(iteratorTeams.hasNext()){
Team t = iteratorTeams.next();
Team team = (Team) getCurrentSession().get(Team.class, t.getId());
Set<TeamMember> teamMembers = team.getTeamMembers();
if(!teamMembers.contains(teamMember)){
teamMembers.add(teamMember);
getCurrentSession().merge(teamMember); // IMPORTANT!
getCurrentSession().merge(team); // IMPORTANT!
}
}
}
TeamMember tm = getTeamMember(teamMember.getId());
tm.setName(teamMember.getName());
tm.setTeams(teamMember.getTeams());
}
那么UnuniqueObjectException呢？@RCola您能发布方法的主体吗？在这里您使用的所有事务注释都是。。！！我无法正确更新现有实体。我可以更新有一个办公室的组织。但对于团队成员和彼此之间有很多关系的团队来说，不可能做到这一点。所有类型的异常都会被抛出。对于一些记录，它只是做得很好。但在某些情况下，它抛出了org.springframework.dao.DuplicateKeyException：具有相同标识符值的不同对象已经与会话关联：[com.sprhib.model.TeamMember3]；嵌套异常为org.hibernate.ununiqueObjectException:具有相同标识符值的不同对象已与会话关联：[com.sprhib.model.TeamMember3]团队成员可能需要合并，但如何知道何时合并？当新实体要持久化到数据库中时，则使用持久化；当从数据库中提取的实体需要更新时，则使用合并。但merge也可以用于持久化新实体。检查您是否正在尝试更新或持久化实体，以及使用哪种方法进行持久化和更新。
@Transactional(propagation=Propagation.REQUIRED,readOnly=false)
public void updateTeamMember(TeamMember teamMember) {
// get all teams related to teamMember
// for each team:
// if team doesn't have this team member then add
synchronized (this){
Iterator<Team> iteratorTeams = teamMember.getTeams().iterator();
while(iteratorTeams.hasNext()){
Team t = iteratorTeams.next();
Team team = (Team) getCurrentSession().get(Team.class, t.getId());
Set<TeamMember> teamMembers = team.getTeamMembers();
if(!teamMembers.contains(teamMember)){
teamMembers.add(teamMember);
getCurrentSession().merge(teamMember); // IMPORTANT!
getCurrentSession().merge(team); // IMPORTANT!
}
}
}
TeamMember tm = getTeamMember(teamMember.getId());
tm.setName(teamMember.getName());
tm.setTeams(teamMember.getTeams());
}