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點擊兩次導致休眠異常的按鈕（表單：表單）

2014-03-07 19 views
0

在點擊兩次按鈕後，在我的應用程序中遇到一個問題（休眠異常& &空指針）。我們正在使用spring mvc 2.5.6和hibernate 3.3.2點擊兩次導致休眠異常的按鈕（表單：表單）

我瞭解空指針異常，但沒有得到爲什麼發生了hibernate異常。 Hibernate異常不是一直都在。

它通過提交後禁用按鈕解決，但我不明白爲什麼發生這種休眠異常。

請讓我知道您的想法。

下面是代碼片斷：

JSP：

<form:form action="test.htm" method="post" commandName="testObject"> 
..... 
<input id="AddButton" name="AddBut" type="submit" class="button" value="Add"/> 
</form:form>

控制器：

hibernateService.insertEntity(entity)

休眠服務層：

result = hibernateDao.insertEntity(entity) 
return result;

DAO層：

Long result = (Long) getSession().save(entity); 
    entity.setXXX(id); 
    getSession().saveOrUpdate(entity); 
    getSession().flush(); 
    return result;

休眠例外：

2014-02-21 12:17:55,994 [ERROR] XXXX - Save failed 
org.springframework.orm.hibernate3.HibernateSystemException: identifier of an instance of XXX was altered from 1 to null; nested exception is org.hibernate.HibernateException: identifier of an instance of XXX was altered from 1 to null 
    at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:676) 
    at org.springframework.orm.hibernate3.HibernateTransactionManager.convertHibernateAccessException(HibernateTransactionManager.java:789) 
    at org.springframework.orm.hibernate3.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:663) 
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:732) 
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:701) 
    at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:321) 
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:116) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) 
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) 
    at $Proxy125.insertEntity(Unknown Source) 
    at XXXX.processEntityInsert(EntityController.java:580) 
    at XXXX.submitCompanyDetails(EntityController.java:530) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at org.springframework.web.servlet.mvc.multiaction.MultiActionController.invokeNamedMethod(MultiActionController.java:473) 
    at org.springframework.web.servlet.mvc.multiaction.MultiActionController.handleRequestInternal(MultiActionController.java:410) 
    at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153) 
    at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48) 
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:875) 
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:807) 
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571) 
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:511) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) 
    at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227) 
    at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125) 
    at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300) 
    at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26) 
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) 
    at com.standardandpoors.zmim.web.UserAgentCompatibleFilter.doFilter(UserAgentCompatibleFilter.java:37) 
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) 
    at com.standardandpoors.web.security.XSSFilter.doFilter(XSSFilter.java:48) 
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) 
    at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:378) 
    at org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109) 
    at org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83) 
    at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) 
    at org.springframework.security.ui.SessionFixationProtectionFilter.doFilterHttp(SessionFixationProtectionFilter.java:67) 
    at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) 
    at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) 
    at org.springframework.security.ui.ExceptionTranslationFilter.doFilterHttp(ExceptionTranslationFilter.java:101) 
    at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) 
    at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) 
    at org.springframework.security.wrapper.SecurityContextHolderAwareRequestFilter.doFilterHttp(SecurityContextHolderAwareRequestFilter.java:91) 
    at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) 
    at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) 
    at org.springframework.security.ui.AbstractProcessingFilter.doFilterHttp(AbstractProcessingFilter.java:277) 
    at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) 
    at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) 
    at org.springframework.security.ui.logout.LogoutFilter.doFilterHttp(LogoutFilter.java:89) 
    at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) 
    at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) 
    at org.springframework.security.context.HttpSessionContextIntegrationFilter.doFilterHttp(HttpSessionContextIntegrationFilter.java:235) 
    at org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53) 
    at org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:390) 
    at org.springframework.security.util.FilterChainProxy.doFilter(FilterChainProxy.java:175) 
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:236) 
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167) 
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) 
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96) 
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) 
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) 
    at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(Unknown Source) 
    at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(Unknown Source) 
    at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) 
    at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120) 
    at weblogic.servlet.internal.WebAppServletContext.securedExecute(Unknown Source) 
    at weblogic.servlet.internal.WebAppServletContext.execute(Unknown Source) 
    at weblogic.servlet.internal.ServletRequestImpl.run(Unknown Source) 
    at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209) 
    at weblogic.work.ExecuteThread.run(ExecuteThread.java:178) 
Caused by: org.hibernate.HibernateException: identifier of an instance of XXXX was altered from 1 to null 
    at org.hibernate.event.def.DefaultFlushEntityEventListener.checkId(DefaultFlushEntityEventListener.java:81) 
    at org.hibernate.event.def.DefaultFlushEntityEventListener.getValues(DefaultFlushEntityEventListener.java:187) 
    at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:143) 
    at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:219) 
    at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:99) 
    at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:49) 
    at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1028) 
    at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:366) 
    at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:137) 
    at org.springframework.orm.hibernate3.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:655) 
    ... 70 more

來源

2014-03-07 user2170172

回答

1

我的猜測是，該方法的getSession（）後的flush（）你的實體失去與剛剛通過的getSession（）saveOrUpdate（實體）持久對象的附件。方法。

在這種情況下，在你的實體得到持久化後，你應該保持它與對象連接，否則你的實體將不會被再次實例化，它的ID將不會被方法entity.setXXX（id）設置。

我認爲你應該嘗試更新你的形式後堅持你的實體，因爲它可能會迫使實體獲得一個新的實例，並作爲一個新的對象，並嘗試找到相同的只是堅持下去。

如果你不知道如何更新表單，我建議你學習一些AJAX材料，這些材料可以在網上找到。試試下面這個源的指示，看看它是否會幫助你：

http://www.mkyong.com/jsf2/jsf-2-0-ajax-hello-world-example/

來源

2014-03-07 20:37:04 N0nbot

+0

感謝您的答覆。但是，如果用戶第一次點擊添加按鈕，並且在服務層（如果用戶單擊按鈕兩次時發生）之後刷新（Default Flush by Hibernate）內存似乎存在一些問題，那麼它完全正常工作。數據將在春季休眠時被提交給數據庫服務層。 – user2170172

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