通过JMSCorrelationID过滤JMS消息接收器 [英] JMS message receiver filtering by JMSCorrelationID

问题描述

如何在Java(JRE/JDK/J2EE 1.4)中实例化仅接收与给定JMSCorrelationID匹配的消息的JMS队列侦听器?我希望接收的邮件已发布到队列中，而不是主题，尽管如果需要可以更改.

How can I instantiate a JMS queue listener in java (JRE /JDK / J2EE 1.4) that only receives messages that match a given JMSCorrelationID? The messages that I'm looking to pick up have been published to a queue and not a topic, although that can change if needed.

/**
 * publishResponseToQueue publishes Requests to the Queue.
 *
 * @param   jmsQueueFactory             -Name of the queue-connection-factory
 * @param   jmsQueue                    -The queue name for the request
 * @param   response                     -A response object that needs to be published
 * 
 * @throws  ServiceLocatorException     -An exception if a request message
 *                                      could not be published to the Topic
 */
private void publishResponseToQueue( String jmsQueueFactory,
                                    String jmsQueue,
                                    Response response )
        throws ServiceLocatorException {

    if ( logger.isInfoEnabled() ) {
        logger.info( "Begin publishRequestToQueue: " +
                         jmsQueueFactory + "," + jmsQueue + "," + response );
    }
    logger.assertLog( jmsQueue != null && !jmsQueue.equals(""),
                      "jmsQueue cannot be null" );
    logger.assertLog( jmsQueueFactory != null && !jmsQueueFactory.equals(""),
                      "jmsQueueFactory cannot be null" );
    logger.assertLog( response != null, "Request cannot be null" );

    try {

        Queue queue = (Queue)_context.lookup( jmsQueue );

        QueueConnectionFactory factory = (QueueConnectionFactory)
            _context.lookup( jmsQueueFactory );

        QueueConnection connection = factory.createQueueConnection();
        connection.start();
        QueueSession session = connection.createQueueSession( false,
                                    QueueSession.AUTO_ACKNOWLEDGE );

        ObjectMessage objectMessage = session.createObjectMessage();

        objectMessage.setJMSCorrelationID(response.getID());

        objectMessage.setObject( response );

        session.createSender( queue ).send( objectMessage );

        session.close();
        connection.close();

    } catch ( Exception e ) {
        //XC3.2  Added/Modified BEGIN
        logger.error( "ServiceLocator.publishResponseToQueue - Could not publish the " +
                      "Response to the Queue - " + e.getMessage() );
        throw new ServiceLocatorException( "ServiceLocator.publishResponseToQueue " +
                                           "- Could not publish the " +
                      "Response to the Queue - " + e.getMessage() );
        //XC3.2  Added/Modified END
    }

    if ( logger.isInfoEnabled() ) {
        logger.info( "End publishResponseToQueue: " +
                         jmsQueueFactory + "," + jmsQueue + response );
    }

}  // end of publishResponseToQueue method 

推荐答案

队列连接设置相同，但是一旦有了QueueSession，就可以在创建接收方时设置选择器.

The queue connection setup is the same, but once you have the QueueSession, you set the selector when creating a receiver.

    QueueReceiver receiver = session.createReceiver(myQueue, "JMSCorrelationID='theid'");

然后

receiver.receive()

或

receiver.setListener(myListener);

这篇关于通过JMSCorrelationID过滤JMS消息接收器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！