simplemessagebean.java

java指南

/*
 * Copyright (c) 2004 Sun Microsystems, Inc.  All rights reserved.  U.S.
 * Government Rights - Commercial software.  Government users are subject
 * to the Sun Microsystems, Inc. standard license agreement and
 * applicable provisions of the FAR and its supplements.  Use is subject
 * to license terms.
 *
 * This distribution may include materials developed by third parties.
 * Sun, Sun Microsystems, the Sun logo, Java and J2EE are trademarks
 * or registered trademarks of Sun Microsystems, Inc. in the U.S. and
 * other countries.
 *
 * Copyright (c) 2004 Sun Microsystems, Inc. Tous droits reserves.
 *
 * Droits du gouvernement americain, utilisateurs gouvernementaux - logiciel
 * commercial. Les utilisateurs gouvernementaux sont soumis au contrat de
 * licence standard de Sun Microsystems, Inc., ainsi qu'aux dispositions
 * en vigueur de la FAR (Federal Acquisition Regulations) et des
 * supplements a celles-ci.  Distribue par des licences qui en
 * restreignent l'utilisation.
 *
 * Cette distribution peut comprendre des composants developpes par des
 * tierces parties. Sun, Sun Microsystems, le logo Sun, Java et J2EE
 * sont des marques de fabrique ou des marques deposees de Sun
 * Microsystems, Inc. aux Etats-Unis et dans d'autres pays.
 */


import java.io.Serializable;
import java.rmi.RemoteException;
import javax.ejb.EJBException;
import javax.ejb.MessageDrivenBean;
import javax.ejb.MessageDrivenContext;
import javax.ejb.CreateException;
import javax.naming.*;
import javax.jms.*;
import java.util.logging.*;


public class SimpleMessageBean implements MessageDrivenBean, MessageListener {
    static final Logger logger = Logger.getLogger("SimpleMessageBean");
    private transient MessageDrivenContext mdc = null;
    private Context context;

    public SimpleMessageBean() {
        logger.info("In SimpleMessageBean.SimpleMessageBean()");
    }

    public void setMessageDrivenContext(MessageDrivenContext mdc) {
        logger.info("In SimpleMessageBean.setMessageDrivenContext()");
        this.mdc = mdc;
    }

    public void ejbCreate() {
        logger.info("In SimpleMessageBean.ejbCreate()");
    }

    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();
        }
    }
     // onMessage

    public void ejbRemove() {
        logger.info("In SimpleMessageBean.remove()");
    }
}
 // class