在Spring4+STOMP+SockJS应用程序中配置外部代理(RabbitMQ)

Question

我正在开发一个使用Spring4 Messaging和STOMP(使用SockJS实现)开发的聊天应用程序。当我使用简单消息代理:

时，应用程序工作正常

config.enableSimpleBroker("/queue/", "/topic/");

但是，现在我们需要在相同的应用程序中使用外部代理(RabbitMQ)。为此，我将上面的代码修改为:

// config.enableSimpleBroker("/queue/", "/topic/");
config.enableStompBrokerRelay("/queue", "/topic");

我的客户端正在使用STOMP客户端连接，如下所示:

stompClient.connect({},  function(frame) {
    // subscribe to topics or queues and other stuff
});

但是，我得到了以下异常:

2014-05-09 11:13:13,567 ERROR        o.s.s.support.TaskUtils$LoggingErrorHandler - Unexpected error occurred in scheduled task.
org.springframework.messaging.MessageDeliveryException: Message broker is not active.
at org.springframework.messaging.simp.stomp.StompBrokerRelayMessageHandler.handleMessageInternal(StompBrokerRelayMessageHandler.java:378) ~[spring-messaging-4.0.3.RELEASE.jar:4.0.3.RELEASE]
at org.springframework.messaging.simp.broker.AbstractBrokerMessageHandler.handleMessage(AbstractBrokerMessageHandler.java:171) ~[spring-messaging-4.0.3.RELEASE.jar:4.0.3.RELEASE]
at org.springframework.messaging.support.ExecutorSubscribableChannel.sendInternal(ExecutorSubscribableChannel.java:64) ~[spring-messaging-4.0.3.RELEASE.jar:4.0.3.RELEASE]
at org.springframework.messaging.support.AbstractMessageChannel.send(AbstractMessageChannel.java:116) ~[spring-messaging-4.0.3.RELEASE.jar:4.0.3.RELEASE]
at org.springframework.messaging.support.AbstractMessageChannel.send(AbstractMessageChannel.java:98) ~[spring-messaging-4.0.3.RELEASE.jar:4.0.3.RELEASE]
at org.springframework.messaging.simp.SimpMessagingTemplate.doSend(SimpMessagingTemplate.java:129) ~[spring-messaging-4.0.3.RELEASE.jar:4.0.3.RELEASE]
at org.springframework.messaging.simp.SimpMessagingTemplate.doSend(SimpMessagingTemplate.java:48) ~[spring-messaging-4.0.3.RELEASE.jar:4.0.3.RELEASE]
at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:93) ~[spring-messaging-4.0.3.RELEASE.jar:4.0.3.RELEASE]
at org.springframework.messaging.core.AbstractMessageSendingTemplate.convertAndSend(AbstractMessageSendingTemplate.java:146) ~[spring-messaging-4.0.3.RELEASE.jar:4.0.3.RELEASE]
at org.springframework.messaging.core.AbstractMessageSendingTemplate.convertAndSend(AbstractMessageSendingTemplate.java:112) ~[spring-messaging-4.0.3.RELEASE.jar:4.0.3.RELEASE]
at org.springframework.messaging.core.AbstractMessageSendingTemplate.convertAndSend(AbstractMessageSendingTemplate.java:106) ~[spring-messaging-4.0.3.RELEASE.jar:4.0.3.RELEASE]
at com.attomic.chat.service.ActiveUserPinger.pingUsers(ActiveUserPinger.java:24) ~[ActiveUserPinger.class:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.7.0_05]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[na:1.7.0_05]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.7.0_05]
at java.lang.reflect.Method.invoke(Method.java:601) ~[na:1.7.0_05]
at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:65) ~[spring-context-4.0.3.RELEASE.jar:4.0.3.RELEASE]
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) ~[spring-context-4.0.3.RELEASE.jar:4.0.3.RELEASE]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) [na:1.7.0_05]
at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:351) [na:1.7.0_05]
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:178) [na:1.7.0_05]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178) [na:1.7.0_05]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [na:1.7.0_05]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) [na:1.7.0_05]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) [na:1.7.0_05]
at java.lang.Thread.run(Thread.java:722) [na:1.7.0_05]

我检查了RabbitMQ，它已经启动并运行。STOMP插件也在RabbitMQ中安装并正常工作。我还尝试了以下操作:

1. config.enableStompBrokerRelay("/queue", "/topic").setSystemLogin("guest").setSystemPasscode("guest");
2. config.enableStompBrokerRelay("/queue", "/topic").setClientLogin("guest").setClientPasscode("guest");
3. config.enableStompBrokerRelay("/queue", "/topic").setRelayHost("localhost").setRelayPort("15672");

我已经做了相当多的搜索，但仍然无法解决这个问题。有人能解释一下吗?

Answer 1

在做了一些研究和实验之后，我发现问题出在客户端。改变

stompClient.connect({},  function(frame) {
    // subscribe to topics or queues and other stuff
});

stompClient.connect('guest', 'guest',  function(frame) {
    // subscribe to topics or queues and other stuff
});

非常有效。这里，第一个参数guest是用户名，第二个参数guest是RabbitMQ服务器的密码。因此，这里的基本要点是，无论何时配置外部代理，都需要传递服务器的用户名和密码。对于简单代理，不需要传递凭据。干杯! !