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📄 simplemessagebean.java

📁 卡内基梅隆大学软件工程课件,很全面
💻 JAVA
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/* * * 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

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