browser.java

一个类似于openJMS分布在ObjectWeb之下的JMS消息中间件。

/*
 * JORAM: Java(TM) Open Reliable Asynchronous Messaging
 * Copyright (C) 2001 - ScalAgent Distributed Technologies
 * Copyright (C) 1996 - Dyade
 *
 * This library 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 any later version.
 * 
 * This library 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 library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 * USA.
 *
 * Initial developer(s): Frederic Maistre (INRIA)
 * Contributor(s):
 */
package classic;

import javax.jms.*;
import javax.naming.*;

/**
 * Browses the queue.
 */
public class Browser
{
  static Context ictx = null; 

  public static void main(String[] args) throws Exception
  {
    System.out.println();
    System.out.println("Browses the queue: ");

    ictx = new InitialContext();
    Queue queue = (Queue) ictx.lookup("queue");
    QueueConnectionFactory qcf = (QueueConnectionFactory) ictx.lookup("qcf");
    ictx.close();

    QueueConnection qc = qcf.createQueueConnection();
    QueueSession qs = qc.createQueueSession(true, 0);
    QueueBrowser browser = qs.createBrowser(queue);

    java.util.Enumeration messages = browser.getEnumeration();

    Message msg;

    while (messages.hasMoreElements()) {
      msg = (Message) messages.nextElement();

      if (msg instanceof TextMessage)
        System.out.println(((TextMessage) msg).getText());
    }

    System.out.println();
    System.out.println("Queue browsed.");

    qc.close();
  }
}