从Hibernate乐观锁定异常恢复

Question

最近我一直面临着一个奇怪的问题。我试着优雅地处理陈旧的状态异常。但是在catch块中，它仍然抛出异常。下面是代码片段

public void saveObject(Object ob){
   try{
      sessionFactory.getCurrentSession().saveOrUpdate(ob);
   }catch(org.springframework.orm.hibernate5.HibernateOptimisticLockingFailureException e){
       object latestObject = // get latest object from db;
       copyFieldsFromObToLatestObject(ob,latestObject);
       // print the version of of both object

    LOGGER.info(" ui_version="+ob.getVersion().longValue()+" 
                 entity_version="+latestObject.getVersion().longValue());
          // the ui _version is less than entity_ version as expected 

        sessionFactory.getCurrentSession().saveOrUpdate(latestObject); // at this line I still get the same optimistic locking exception 

   }
}
 /**

 ob2 is the latest object which contains the correct  version hence copying the fields from previous object to this latest object
**/
private void copyFieldsFromObToLatestObject(ob1,ob2){
    ob2.setA(ob1.getA())..
   so on
}

有人能看看这个吗。我无法理解为什么它在正确处理后仍然抛出乐观锁定异常。

编辑1：堆栈跟踪：

org.springframework.orm.hibernate5.HibernateOptimisticLockingFailureException:批处理更新返回更新中意外的行数；实际行数: 0；预期: 1；嵌套异常为org.hibernate.StaleStateException:批处理更新返回来自更新的意外行计数；实际行计数: 0；预期:1信息在org.springframework.orm.hibernate5.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:283)在org.springframework.orm.hibernate5.HibernateTransactionManager.convertHibernateAccessException(HibernateTransactionManager.java:755)信息在org.springframework.orm.hibernate5.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:590)信息在org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:765)信息在org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:734)信息在org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:518)信息在org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:292)信息，org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)信息在org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)信息，org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)信息在com.sun.Proxy。$Proxy155.SaveOrUpdate(未知来源)信息在biz.kaar.common.services。appointment.impl.AppointmentServiceExtension1BOImpl.handleStaleStateException(AppointmentServiceExtension1BOImpl.java:1520)信息，biz.kaar.common.services.appointment.impl.AppointmentServiceExtension1BOImpl.saveSAR(AppointmentServiceExtension1BOImpl.java:845)信息，biz.kaar.common.services.DBServiceImpl.saveSAR(DBServiceImpl.java:382)信息，sun.reflect.NativeMethodAccessorImpl.invoke0(Native方法)信息，sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)信息，sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)信息，java.lang.reflect.Method.invoke( net.sf.gilead.gwt.PersistentRemoteService.processCall(PersistentRemoteService.java:115) )信息在biz.kaar.common.security.AuthorizedGWTServlet.processCall(AuthorizedGWTServlet.java:252)信息在biz.kaar.common.services.RemoteServletWithLogging.processCall(RemoteServletWithLogging.java:90)信息在com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:373)信息在com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)javax.servlet.http.HttpServlet.service(HttpServlet.java:707)信息javax.servlet.http.HttpServlet.service(HttpServlet.java:790)信息org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812)信息org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)信息org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:316)信息org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityIntercep

Answer 1

问题解决了，我在to字段中复制了关联子实体的版本，这会导致较早版本的子实体被保存，从而导致错误。

Answer 2

在catch块中，您应该捕获要处理的抛出的异常。你抓住Optimistic locking exception了。我甚至无法想象这是如何编译的。尝试将其替换为堆栈跟踪中异常的名称？