我正在使用struts2框架。当我提交表单时，它成功存储在数据库中，并且将用户重定向到同一页面，但是当我再次刷新该页面时，出现错误提示。
我正在使用tokenSession拦截器。
有人可以帮忙解决这个问题吗？
Error 500--Internal Server Error
java.lang.NullPointerException
at weblogic.servlet.internal.ServletRequestImpl$SessionHelper.initSessionInfo(ServletRequestImpl.java:3193)
at weblogic.servlet.internal.ServletRequestImpl$SessionHelper._getSessionInternal(ServletRequestImpl.java:2894)
at weblogic.servlet.internal.ServletRequestImpl$SessionHelper.getSessionInternal(ServletRequestImpl.java:2881)
at weblogic.servlet.internal.ServletRequestImpl$SessionHelper.getSession(ServletRequestImpl.java:2871)
at weblogic.servlet.internal.ServletRequestImpl.getSession(ServletRequestImpl.java:1525)
at weblogic.servlet.internal.RequestDispatcherImpl.include(RequestDispatcherImpl.java:508)
at weblogic.servlet.jsp.PageContextImpl.include(PageContextImpl.java:161)
at org.apache.struts2.result.ServletDispatcherResult.doExecute(ServletDispatcherResult.java:132)
at org.apache.struts2.result.StrutsResultSupport.execute(StrutsResultSupport.java:206)
at org.apache.struts2.interceptor.TokenSessionStoreInterceptor.handleInvalidToken(TokenSessionStoreInterceptor.java:143)
at org.apache.struts2.interceptor.TokenSessionStoreInterceptor.handleToken(TokenSessionStoreInterceptor.java:109)
at org.apache.struts2.interceptor.TokenInterceptor.doIntercept(TokenInterceptor.java:139)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:99)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at org.apache.struts2.factory.StrutsActionProxy.execute(StrutsActionProxy.java:48)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:574)
at org.apache.struts2.dispatcher.ExecuteOperations.executeAction(ExecuteOperations.java:79)
at org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:141)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:78)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3701)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3667)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:326)
at weblogic.security.service.SecurityManager.runAsForUserCode(SecurityManager.java:197)
at weblogic.servlet.provider.WlsSecurityProvider.runAsForUserCode(WlsSecurityProvider.java:203)
at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:71)
at weblogic.servlet.internal.WebAppServletContext.doSecuredExecute(WebAppServletContext.java:2443)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2291)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2269)
at weblogic.servlet.internal.ServletRequestImpl.runInternal(ServletRequestImpl.java:1703)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1663)
at weblogic.servlet.provider.ContainerSupportProviderImpl$WlsRequestExecutor.run(ContainerSupportProviderImpl.java:272)
at weblogic.invocation.ComponentInvocationContextManager._runAs(ComponentInvocationContextManager.java:352)
at weblogic.invocation.ComponentInvocationContextManager.runAs(ComponentInvocationContextManager.java:337)
at weblogic.work.LivePartitionUtility.doRunWorkUnderContext(LivePartitionUtility.java:57)
at weblogic.work.PartitionUtility.runWorkUnderContext(PartitionUtility.java:41)
at weblogic.work.SelfTuningWorkManagerImpl.runWorkUnderContext(SelfTuningWorkManagerImpl.java:644)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:415)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:355)
这是weblogic版本的问题吗？