sender.java

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

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* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
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* published by the Free Software Foundation; either version 2.1 of
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*
* This software is distributed in the hope that it will be useful,
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
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* License along with this software; if not, write to the Free
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*/
package org.jboss.example.jms.ejb3mdb;

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 EJB3 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: 2977 $</tt>
 *
 * $Id: Sender.java 2977 2007-08-08 15:32:14Z 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 = 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());



      connection.close();
   }




   protected boolean isQueueExample()
   {
      return true;
   }

   public static void main(String[] args)
   {
      new Sender().run();
   }

}