Question

我正在研究EJB中的Message Driven Bean示例。我创建了部署在weblogic服务器和Client项目中的EJB项目，它使用JNDI名称将消息发送到MDB。我还在weblogic控制台中创建了JMS Queue和Queue ConnectionFactory。

但问题是在客户端，它无法识别队列的JNDI名称。

EJB项目中的OueueListenerMDB.java

@MessageDriven(activationConfig = {
    @ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue"),
    @ActivationConfigProperty(propertyName = "destination", propertyValue = "jms/weblogic.wsee.DefaultQueue")
    },
    mappedName = "mdb")
public class QueueListenerMDB implements IQueueListenerMDB{
public QueueListenerMDB() {
}

public void onMessage(Message message) {
    try {
        if (message instanceof TextMessage) {
            System.out.println("Queue: I received a TextMessage at "
                    + new Date());
            TextMessage msg = (TextMessage) message;
            System.out.println("Message is : " + msg.getText());
        } else if (message instanceof ObjectMessage) {
            System.out.println("Queue: I received an ObjectMessage at "
                    + new Date());
            ObjectMessage msg = (ObjectMessage) message;
            Employee employee = (Employee) msg.getObject();
            System.out.println("Employee Details: ");
            System.out.println(employee);
        } else {
            System.out.println("Not valid message for this Queue MDB");
        }
    } catch (JMSException e) {
        e.printStackTrace();
    }
}

}

客户端项目上的QueueSenderDemo.java

public class QueueSenderDemo {
private static final String PROVIDER_URL = "t3://localhost:7002/";

private static final String INITIAL_CONTEXT_FACTORY = "weblogic.jndi.WLInitialContextFactory";

private static Context initialContext;

private static final String QUEUE_LOOKUP = "jms/weblogic.wsee.DefaultQueue"; 
private static final String CONNECTION_FACTORY = "jms/weblogic.jms.ConnectionFactory"; 

public static void main(String[] args) throws NamingException {
    sendMessageToQueue();
}

public static void sendMessageToQueue() {
    try {
        Context context = getInitialContextForClient();

        QueueConnectionFactory factory = (QueueConnectionFactory) context.lookup(CONNECTION_FACTORY);

        QueueConnection connection = factory.createQueueConnection();
        QueueSession session = connection.createQueueSession(false,
                QueueSession.AUTO_ACKNOWLEDGE);
        Queue queue = (Queue) context.lookup(QUEUE_LOOKUP);

        QueueSender sender = session.createSender(queue);
        TextMessage message = session.createTextMessage("Welcome to EJB3 Message Driven Bean.");
        sender.send(message);
        session.close();
    } catch (NamingException e) {
        e.printStackTrace();
    } catch (JMSException e) {
        e.printStackTrace();
    }
}

public static Context getInitialContextForClient()
        throws NamingException {
    if (initialContext == null) {
        Properties prop = new Properties();
        prop.put(Context.INITIAL_CONTEXT_FACTORY, INITIAL_CONTEXT_FACTORY);
        prop.put(Context.PROVIDER_URL, PROVIDER_URL);
        initialContext = new InitialContext(prop);
    }
    return initialContext;
}
}

我在运行像这样的客户端程序时遇到错误。

javax.naming.NameNotFoundException: While trying to lookup 'jms.weblogic.wsee.DefaultQueue' didn't find subcontext 'wsee'. Resolved 'jms.weblogic' [Root exception is javax.naming.NameNotFoundException: While trying to lookup 'jms.weblogic.wsee.DefaultQueue' didn't find subcontext 'wsee'. Resolved 'jms.weblogic']; remaining name 'wsee/DefaultQueue'
at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:234)
at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:348)
at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:259)
at weblogic.jndi.internal.ServerNamingNode_1035_WLStub.lookup(Unknown Source)
at weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:423)
at weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:411)
at javax.naming.InitialContext.lookup(Unknown Source)
at com.mdbclient.utility.QueueSenderDemo.sendMessageToQueue(QueueSenderDemo.java:36)
at com.mdbclient.utility.QueueSenderDemo.main(QueueSenderDemo.java:27)
Caused by: javax.naming.NameNotFoundException: While trying to lookup 'jms.weblogic.wsee.DefaultQueue' didn't find subcontext 'wsee'. Resolved 'jms.weblogic'
at weblogic.jndi.internal.BasicNamingNode.newNameNotFoundException(BasicNamingNode.java:1139)
at weblogic.jndi.internal.BasicNamingNode.lookupHere(BasicNamingNode.java:247)
at weblogic.jndi.internal.ServerNamingNode.lookupHere(ServerNamingNode.java:182)
at weblogic.jndi.internal.BasicNamingNode.lookup(BasicNamingNode.java:206)
at weblogic.jndi.internal.BasicNamingNode.lookup(BasicNamingNode.java:214)
at weblogic.jndi.internal.BasicNamingNode.lookup(BasicNamingNode.java:214)
at weblogic.jndi.internal.RootNamingNode_WLSkel.invoke(Unknown Source)
at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:667)
at weblogic.rmi.cluster.ClusterableServerRef.invoke(ClusterableServerRef.java:230)
at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:522)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:146)
at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:518)
at weblogic.rmi.internal.wls.WLSExecuteRequest.run(WLSExecuteRequest.java:118)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:178)
at weblogic.jndi.internal.BasicNamingNode.lookupHere(BasicNamingNode.java:252)
at weblogic.jndi.internal.ServerNamingNode.lookupHere(ServerNamingNode.java:182)
at weblogic.jndi.internal.BasicNamingNode.lookup(BasicNamingNode.java:206)
at weblogic.jndi.internal.BasicNamingNode.lookup(BasicNamingNode.java:214)
at weblogic.jndi.internal.RootNamingNode_WLSkel.invoke(Unknown Source)
at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:667)
at weblogic.rmi.cluster.ClusterableServerRef.invoke(ClusterableServerRef.java:230)
at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:522)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:146)
at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:518)
at weblogic.rmi.internal.wls.WLSExecuteRequest.run(WLSExecuteRequest.java:118)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:178)

Answer 1

确保您的子部署/定位指向正确的服务器。您的队列可能托管在受管服务器上，并且您尝试在错误的受管服务器或管理服务器上查找。如果您可以显示定位或jndi树，则可以更轻松地提供帮助。

无法在Weblogic中解析Queue和QueueConnectionFactory的JNDI名称

1 个答案: