Question

I am new to Queues. I had setup my queue in JBOSS 5.1 EAP and now while trying to inject in tho the queue am getting a ClassCastException (in lookup of JNDI), I use flex on my front end and use Spring framework for flex. When injected into the queue using quartz job it runs well and good. The quartz job is a separate project and has nothing to do with flex and spring.

I read over some where that this could be a jar issue, I had JMS jars in my spring and i tried removing, replacing all types of jars, no luck.

        // Step 1. Create an initial context to perform the JNDI lookup.

        InputStream in = this.getClass().getResourceAsStream(
                "/clv2.properties");
        Properties configProp = new Properties();
        configProp.load(in);
        IpAddress = configProp.getProperty("ipaddress");
        port = configProp.getProperty("port");
        inQueueName = configProp.getProperty("inQueueName");
        Properties props = new Properties();
        props.setProperty("java.naming.factory.initial",
                "org.jnp.interfaces.NamingContextFactory");
        props.setProperty("java.naming.factory.url.pkgs",
                "org.jboss.naming");
        // props.setProperty("java.naming.provider.url", host + ":" + port);
        props.setProperty("java.naming.provider.url", "localhost" + ":"
                + 1099);
        // props.setProperty("java.naming.provider.url",
        // "16.181.233.61:1399");
        initialContext = new InitialContext(props);

        // Step 3. Perform a lookup on the Connection Factory
        QueueConnectionFactory cf = (QueueConnectionFactory) initialContext
                .lookup("/ConnectionFactory");
        Queue queue = (Queue) initialContext
                .lookup(/* "/queue/CLVInboundQueue" */inQueueName);
        // Step 4.Create a JMS Connection
        connection = (QueueConnection) cf.createConnection();

        // Step 5. Create a JMS Session
        session = (QueueSession) connection.createSession(false,
                Session.AUTO_ACKNOWLEDGE);

        // Step 6. Create a JMS Message Producer
        // MessageProducer producer = session.createProducer(queue);
        QueueSender queueSender = session.createSender(queue);
        TextMessage textMessage = session.createTextMessage(message);
        textMessage.setLongProperty("Rejected_Message_ID",
                rejected_Message_Id);
        /*
         * BufferedReader reader = new BufferedReader(new
         * InputStreamReader(ClassLoader.class.getResourceAsStream(file)));
         * StringBuilder sb = new StringBuilder(); String line = null;
         * 
         * 
         * while ((line = reader.readLine()) != null) { sb.append(line +
         * "\n"); } String announcementmsg = sb.toString();
         */
        commonlogger.info(textMessage);
        connection.start();
        // producer.send(session.createTextMessage(announcementmsg));
        queueSender.send(textMessage);

This is my piece of coding to inject into the queue. I get the Exception in “//Step 3. Perform a lookup on the Connection Factory” and this is my stack trace.

09:22:20,730 ERROR [STDERR] java.lang.ClassCastException: org.jboss.jms.client.JBossConnectionFactory cannot be cast to javax.jms.QueueConnectionFactory
09:22:20,731 ERROR [STDERR]     at com.cat.clv.util.InQueueReinjectMessage.sendMessage(InQueueReinjectMessage.java:63)
09:22:20,731 ERROR [STDERR]     at com.cat.clv.util.RejectedMessageReinject.reProcessedMessage(RejectedMessageReinject.java:65)
09:22:20,731 ERROR [STDERR]     at com.cat.clv.service.ReinjectMessagesServiceImpl.reinjectRejectedMessages(ReinjectMessagesServiceImpl.java:106)
09:22:20,731 ERROR [STDERR]     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
09:22:20,731 ERROR [STDERR]     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
09:22:20,732 ERROR [STDERR]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
09:22:20,732 ERROR [STDERR]     at java.lang.reflect.Method.invoke(Unknown Source)
09:22:20,732 ERROR [STDERR]     at flex.messaging.services.remoting.adapters.JavaAdapter.invoke(JavaAdapter.java:421)
09:22:20,732 ERROR [STDERR]     at flex.messaging.services.RemotingService.serviceMessage(RemotingService.java:183)
09:22:20,732 ERROR [STDERR]     at flex.messaging.MessageBroker.routeMessageToService(MessageBroker.java:1503)

Answer 1

If you look at the source of JBossConnectionFactory then you will see it implements QueueConnectionFactory.

So this class cast exception can be because of :

1. Erroneous installation of JBoss
2. Different jms.jar in client and server

Can you first try out option 2 and see if it works, if not can you check if the examples work in your jboss installation.