Question

在我们的应用程序中，我们在前端和后端之间使用独立的ActiveMQ 5.7.0。前端通过tcp（与ActiveMQ在同一台机器上）连接，后端连接通过代理服务器上的https（这是我们可以从后端通信的唯一方式）。

我们通过spring JmsInvokerServiceExporter实现了一些同步服务。现在我们不时在前端得到以下错误：

org.springframework.remoting.RemoteAccessException: Could not access JMS invoker queue [queue://schufaFeedback.QUEUE]; nested exception is org.apache.activem
q.ConnectionClosedException: The connection is already closed
        at org.springframework.jms.remoting.JmsInvokerClientInterceptor.convertJmsInvokerAccessException(JmsInvokerClientInterceptor.java:431)
        at org.springframework.jms.remoting.JmsInvokerClientInterceptor.invoke(JmsInvokerClientInterceptor.java:204)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
        at com.sun.proxy.$Proxy23.getSchufaFeedback(Unknown Source)
        at com.xxx.xxx.web.springmvc.controller.MyFormController.addCredits(MyFormController.java:109)
        at com.xxx.xxx.web.springmvc.controller.MyFormController.submitConsent(MyFormController.java:102)
        at com.xxx.xxx.web.springmvc.controller.MyFormController$$FastClassByCGLIB$$3517c773.invoke(<generated>)
        at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:191)
        at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:689)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
        at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:80)
        at com.xxx.xxx.web.springmvc.aspects.StepAccessAspect.checkAcess(StepAccessAspect.java:33)
        at sun.reflect.GeneratedMethodAccessor117.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621)
        at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610)
        at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:65)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:161)
        at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:80)
        at com.xxx.xxx.web.springmvc.aspects.AuthenticationAspect.authenticateControllerAccess(AuthenticationAspect.java:28)
        at sun.reflect.GeneratedMethodAccessor62.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)        
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)
        at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)
        at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)
        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)
        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)
        at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
        at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
        at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:465)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
        at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
        at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
        at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:769)
        at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:698)
        at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:891)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
        at java.lang.Thread.run(Thread.java:662)
Caused by: org.apache.activemq.ConnectionClosedException: The connection is already closed
        at org.apache.activemq.ActiveMQConnection.checkClosed(ActiveMQConnection.java:1462)
        at org.apache.activemq.ActiveMQConnection.checkClosedOrFailed(ActiveMQConnection.java:1449)
        at org.apache.activemq.ActiveMQConnection.deleteTempDestination(ActiveMQConnection.java:2050)
        at org.apache.activemq.command.ActiveMQTempDestination.delete(ActiveMQTempDestination.java:52)
        at org.springframework.jms.remoting.JmsInvokerClientInterceptor.doExecuteRequest(JmsInvokerClientInterceptor.java:372)
        at org.springframework.jms.remoting.JmsInvokerClientInterceptor.executeRequest(JmsInvokerClientInterceptor.java:251)
        at org.springframework.jms.remoting.JmsInvokerClientInterceptor.invoke(JmsInvokerClientInterceptor.java:201)
        ... 75 more

我认为会发生这种情况，因为代理会不时地终止连接，因此会使用临时队列 Spring Remoting是无用的（它总是发生在“org.apache.activemq.ActiveMQConnection.deleteTempDestination”中）。

为了使这些服务调用更可靠，我们希望避免使用临时队列并使用静态回复队列（或主题）。我没找到使用Spring Remoting功能实现此解决方案。

我发现的解决方案：

Spring集成 - 出站网关：您可以指定回复目标，但没有与接口的连接。

Apache Camel Bean集成 - 我不确定这是正确的方法。

你能否给我任何建议如何解决这个问题，而不是自己为每个服务方法调用实现JMS逻辑？我认为spring remoting方法非常舒适，因为你只需要配置界面和实现。
您知道为什么这些“连接已经关闭”异常发生吗？

由于

Answer 1

您可以覆盖

org.springframework.jms.remoting.JmsInvokerClientInterceptor.doExecuteRequest

和

org.springframework.jms.remoting.JmsInvokerServiceExporter.writeRemoteInvocationResult

使用相关ID而不是临时队列/主题，并将它们用作标准的spring remoting服务。

没有临时队列的JMS RPC

1 个答案: