Question

我正在尝试将WSO2 ESB（4.7.0）与WSO2 Message Broker（2.1.0）集成。

这是我的用例：

通用HTTP客户端向PassThrough代理发送REST请求部署在WSO2 ESB上
ESB代理有一个后果：将请求转发给真实的然后，在后台，它将响应发送给一个中介类（部署在WSO2 ESB内）
mediator类制作一些东西，并在里面有这个方法它可以将事件发布到Message Broker上的主题：

代码：

private void publishEvent(){        
    String topicName = "MyEvent";

    Properties properties = new Properties();
    TopicConnection topicConnection = null;

    properties.put("java.naming.factory.initial", "org.wso2.andes.jndi.PropertiesFileInitialContextFactory");


    String connectionString = "amqp://admin:admin@clientID/carbon?brokerlist='tcp://localhost:5673'";

    properties.put("connectionfactory.QueueConnectionFactory", connectionString);

    try {

        InitialContext ctx =  new InitialContext(properties);
        TopicConnectionFactory tcf = (TopicConnectionFactory) ctx.lookup("QueueConnectionFactory");
        TopicConnection connection = tcf.createTopicConnection();
        TopicSession session = connection.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);

        Topic topic = session.createTopic(topicName);
        TopicPublisher publisher= session.createPublisher(topic);
        TextMessage textMessage =
             session.createTextMessage("<asd>sono il publisher di WSO2 message Broker!</asd>");

        publisher.publish(textMessage);
     publisher.close();

    }catch (Exception e){

        e.printStackTrace();
    }
 }

另一端有“MyEvent”主题的订阅者已经在运行。

（我从此网址获取了发布商和订阅者的代码：http://wso2.com/library/articles/2011/12/wso2-esb-example-pubsub-soa/）

当客户端将REST请求发送到代理（1）时，调解器被正确调用，但是当它尝试执行PublishEvent方法（3）时，没有任何反应，WSO2 ESB会记录此530错误：

INFO - ConnectionCloseMethodHandler ConnectionClose frame received
[2013-10-17 12:43:47,733]  INFO - ConnectionCloseMethodHandler Error :530: not      allowed:Thread-33
[2013-10-17 12:43:47,734] ERROR - AMQStateManager No Waiters for error saving as last  error:Attempt to redeclare exchange: amq.topic of type topic to null.
[2013-10-17 12:43:47,735] ERROR - AMQConnection Throwable Received but no listener set: org.wso2.andes.client.AMQAuthenticationException: Attempt to redeclare exchange: amq.topic of type topic to null. [error code 530: not allowed]
ERROR - AMQStateManager No Waiters for error saving as last error:Attempt to redeclare exchange: amq.topic of type topic to null.
[2013-10-17 20:53:44,996] ERROR - AMQConnection error:
org.wso2.andes.client.AMQAuthenticationException: Attempt to redeclare exchange: amq.topic of type topic to null. [error code 530: not allowed]
at     org.wso2.andes.client.handler.ConnectionCloseMethodHandler.methodReceived(ConnectionCloseMethodHandler.java:79)
at     org.wso2.andes.client.handler.ClientMethodDispatcherImpl.dispatchConnectionClose(ClientMethodDispatcherImpl.java:192)
at     org.wso2.andes.framing.amqp_0_91.ConnectionCloseBodyImpl.execute(ConnectionCloseBodyImpl.java:140)
at     org.wso2.andes.client.state.AMQStateManager.methodReceived(AMQStateManager.java:111)
at     org.wso2.andes.client.protocol.AMQProtocolHandler.methodBodyReceived(AMQProtocolHandler.java:515)
at org.wso2.andes.client.protocol.AMQProtocolSession.methodFrameReceived(AMQProtocolSession.java:456)
at org.wso2.andes.framing.AMQMethodBodyImpl.handle(AMQMethodBodyImpl.java:96)
at org.wso2.andes.client.protocol.AMQProtocolHandler$2.run(AMQProtocolHandler.java:466)
at org.wso2.andes.pool.Job.processAll(Job.java:109)
at org.wso2.andes.pool.Job.run(Job.java:157)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
javax.jms.JMSException: Error closing connection:     org.wso2.andes.client.AMQAuthenticationException: Attempt to redeclare exchange: amq.topic of type topic to null. [error code 530: not allowed]
at org.wso2.andes.client.AMQConnection.doClose(AMQConnection.java:920)
at org.wso2.andes.client.AMQConnection.close(AMQConnection.java:855)
at org.wso2.andes.client.AMQConnection.close(AMQConnection.java:846)
at org.wso2.andes.client.AMQConnection.close(AMQConnection.java:841)
at innova.esb.mediator.TopicPublisher.publishMessage(TopicPublisher.java:49)
at     innova.esb.mediator.MediatorEventPublisher.mediate(MediatorEventPublisher.java:35)
at org.apache.synapse.mediators.ext.ClassMediator.mediate(ClassMediator.java:78)
at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:71)
at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:114)
at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:239)
at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:443)
at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:166)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
at org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:222)
at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
Caused by: org.wso2.andes.client.AMQAuthenticationException: Attempt to redeclare exchange: amq.topic of type topic to null. [error code 530: not allowed]
at org.wso2.andes.client.handler.ConnectionCloseMethodHandler.methodReceived(ConnectionCloseMethodHandler.java:79)
at org.wso2.andes.client.handler.ClientMethodDispatcherImpl.dispatchConnectionClose(ClientMethodDispatcherImpl.java:192)
at org.wso2.andes.framing.amqp_0_91.ConnectionCloseBodyImpl.execute(ConnectionCloseBodyImpl.java:140)
at org.wso2.andes.client.state.AMQStateManager.methodReceived(AMQStateManager.java:111)
at org.wso2.andes.client.protocol.AMQProtocolHandler.methodBodyReceived(AMQProtocolHandler.java:515)
at org.wso2.andes.client.protocol.AMQProtocolSession.methodFrameReceived(AMQProtocolSession.java:456)
at org.wso2.andes.framing.AMQMethodBodyImpl.handle(AMQMethodBodyImpl.java:96)
at org.wso2.andes.client.protocol.AMQProtocolHandler$2.run(AMQProtocolHandler.java:466)
at org.wso2.andes.pool.Job.processAll(Job.java:109)
at org.wso2.andes.pool.Job.run(Job.java:157)

显然，订阅者没有发现任何事件。

有什么问题？为什么我有此连接异常？

非常感谢。

WSO2 ESB Publisher的AMQAuthenticationException

0 个答案: