sender.java

jboss messaging examples, 基于jboss messaging的jms应用例子

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2005, JBoss Inc., and individual contributors as indicated
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jboss.example.jms.mdb;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Queue;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.naming.InitialContext;

import org.jboss.example.jms.common.ExampleSupport;

/**
 * This example deploys a simple Message Driven Bean that processes messages sent to a test queue.
 * Once it receives a message and "processes" it, the MDB sends an acknowledgment message to a
 * temporary destination created by the sender for this purpose. The example is considered
 * successful if the sender receives the acknowledgment message.
 *
 * Since this example is also used by the smoke test, it is essential that the VM exits with exit
 * code 0 in case of successful execution and a non-zero value on failure.
 *
 * @author <a href="mailto:[e-mail]">Ovidiu Feodorov</a>
 * @version <tt>$Revision: 2868 $</tt>
 *
 * $Id: Sender.java 2868 2007-07-10 20:22:16Z timfox $
 */
public class Sender extends ExampleSupport
{
   public void example() throws Exception
   {
      String destinationName = getDestinationJNDIName();
                  
      InitialContext ic = new InitialContext();
            
      ConnectionFactory cf = (ConnectionFactory)ic.lookup("/ConnectionFactory");
      Queue queue = (Queue)ic.lookup(destinationName);
                 
      log("Queue " + destinationName + " exists");            
      
      Connection connection = null;
      
      try
      {
         connection = cf.createConnection();
         Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageProducer sender = session.createProducer(queue);      
               
         Queue temporaryQueue = session.createTemporaryQueue();
         MessageConsumer consumer = session.createConsumer(temporaryQueue);            
         
         TextMessage message = session.createTextMessage("Hello!");
         message.setJMSReplyTo(temporaryQueue);            
         
         sender.send(message);
                     
         log("The " + message.getText() + " message was successfully sent to the " + queue.getQueueName() + " queue");
   
         connection.start();
         
         message = (TextMessage)consumer.receive(5000);
              
         if (message == null)
         {
            throw new Exception("Have not received any reply. The example failed!");
         }
               
         log("Received message: " + message.getText());
         
         assertEquals("!olleH", message.getText());
                     
         displayProviderInfo(connection.getMetaData());
      }
      finally
      {
         if (connection != null)
         {
            connection.close();
         }
      }
   }
           
   protected boolean isQueueExample()
   {
      return true;
   }
   
   public static void main(String[] args)
   {
      new Sender().run();
   }
   
}