simplemessagebean.java

JavaeeTutorial5的源代码。

/*
 * Copyright 2007 Sun Microsystems, Inc.
 * All rights reserved.  You may not modify, use,
 * reproduce, or distribute this software except in
 * compliance with  the terms of the License at:
 * http://developer.sun.com/berkeley_license.html
 */


import javax.ejb.MessageDriven;
import javax.ejb.MessageDrivenContext;
import javax.ejb.ActivationConfigProperty;
import javax.jms.MessageListener;
import javax.jms.Message;
import javax.jms.TextMessage;
import javax.jms.JMSException;
import javax.annotation.Resource;
import java.util.logging.Logger;


@MessageDriven(mappedName = "jms/Queue")
public class SimpleMessageBean implements MessageListener {
    static final Logger logger = Logger.getLogger("SimpleMessageBean");
    @Resource
    private MessageDrivenContext mdc;

    public SimpleMessageBean() {
    }

    public void onMessage(Message inMessage) {
        TextMessage msg = null;

        try {
            if (inMessage instanceof TextMessage) {
                msg = (TextMessage) inMessage;
                logger.info("MESSAGE BEAN: Message received: " + msg.getText());
            } else {
                logger.warning(
                        "Message of wrong type: "
                        + inMessage.getClass().getName());
            }
        } catch (JMSException e) {
            e.printStackTrace();
            mdc.setRollbackOnly();
        } catch (Throwable te) {
            te.printStackTrace();
        }
    }
}