休眠实体的更新/编辑无法正常工作

Question

我尝试了Team和TeamMembers上级联类型的所有组合，但仍然无法使用手动/ Selenium测试更新/编辑给定的TeamMember。这个问题似乎与休眠：

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) 

基本上所有的更新/编辑操作不起作用。我需要所有的UI测试才能通过。 [我的项目] [1]。也许有一些我不知道的设计问题...我错过了什么？

UPDATE：

import com.sprhib.model.Team; 
import com.sprhib.model.TeamMember; 
import org.hibernate.Session; 
import org.hibernate.SessionFactory; 
import org.hibernate.Transaction; 
import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.stereotype.Repository; 

import javax.transaction.Transactional; 
import java.util.Iterator; 
import java.util.List; 
import java.util.Set; 

@Repository 
@Transactional 
public class TeamMemberDAOImpl implements TeamMemberDAO { 

    @Autowired 
    private SessionFactory sessionFactory; 

    private Session getCurrentSession() { 
     return sessionFactory.getCurrentSession(); 
    } 
    private Session openSession(){ 
     return sessionFactory.openSession(); 
    } 

    public void addTeamMember(TeamMember teamMember) { 
     Iterator<Team> iterator = teamMember.getTeams().iterator(); 
     while(iterator.hasNext()){ 
      Team t = iterator.next(); 
      Team team = (Team) getCurrentSession().get(Team.class, t.getId()); 

      Set<TeamMember> teamMembers = team.getTeamMembers(); 
      teamMembers.add(teamMember); 
     } 
    } 

    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); 
       } 
      } 

     } 


//  no errors but teams is not updated 
     /*TeamMember tm = getTeamMember(teamMember.getId()); 
     tm.setName(teamMember.getName()); 
     tm.setTeams(teamMember.getTeams());*/ 
    } 

    public TeamMember getTeamMember(int id) { 
     TeamMember teamMember = (TeamMember) getCurrentSession().get(TeamMember.class, id); 
     return teamMember; 
    } 

    public void deleteTeamMember(int id) { 
     if(getTeamMember(id) != null){ 
      getCurrentSession().delete(getTeamMember(id)); 
     } 

    } 

    @SuppressWarnings("unchecked") 
    public List<TeamMember> getTeamMembers() { 
     return getCurrentSession().createQuery("from TeamMember").list(); 
    } 
} 

UPDATE2

合并（）解决了这个问题。

Answer 1

试试这个下面的代码就可以成功我不知道..

@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()); 
}