simplemessagebean.java

来自「j2ee tutorial」· Java 代码 · 共 64 行

/*
 *
 * Copyright 2001 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * This software is the proprietary information of Sun 
 * Microsystems, Inc.  Use is subject to license terms.
 * 
 */

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.*;

public class SimpleMessageBean implements MessageDrivenBean, 
    MessageListener {

    private transient MessageDrivenContext mdc = null;
    private Context context;
    
    public SimpleMessageBean() {
        System.out.println("In SimpleMessageBean.SimpleMessageBean()");
    }

    public void setMessageDrivenContext(MessageDrivenContext mdc) {
        System.out.println("In "
            + "SimpleMessageBean.setMessageDrivenContext()");
	this.mdc = mdc;
    }

    public void ejbCreate() {
	System.out.println("In SimpleMessageBean.ejbCreate()");
    }

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

        try {
            if (inMessage instanceof TextMessage) {
                msg = (TextMessage) inMessage;
                System.out.println("MESSAGE BEAN: Message received: " 
                    + msg.getText());
            } else {
                System.out.println("Message of wrong type: " 
                    + inMessage.getClass().getName());
            }
        } catch (JMSException e) {
            e.printStackTrace();
            mdc.setRollbackOnly();
        } catch (Throwable te) {
            te.printStackTrace();
        }
    }  // onMessage
    
    public void ejbRemove() {
        System.out.println("In SimpleMessageBean.remove()");
    }

} // class