mdbexample.java

Java开发的权限管理的例子

package org.artemis.right.ejb;

import javax.ejb.EJBException;
import javax.ejb.MessageDrivenBean;
import javax.ejb.MessageDrivenContext;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.TextMessage;

/**
 * XDoclet-based Message Driven entity bean.
 * 
 * To generate EJB related classes using XDoclet:
 *
 *		- Add Standard EJB module to XDoclet project properties
 *		- Customize XDoclet configuration
 *		- Run XDoclet
 * 
 * Below are the xdoclet-related tags needed for this EJB.
 *
* @ejb.bean name="MDBExample"
 *           display-name="Name for MDBExample11"
 *           description="Description for MDBExample"
 *           destination-type="javax.jms.Queue"
 *           jndi-name="jms/MDBExample"
 *           acknowledge-mode="Auto-acknowledge"
 * 
 *@ejb.message-driven
 *           destination-jndi-name="="SendJMSQueue"
 *           initial-context-factory="weblogic.jndi.WLInitialContextFactory"
 *           connection-factory-jndi-name="SendJMSFactory"
 *       
 */
public class MDBExample implements MessageDrivenBean, MessageListener {

	/** The MessageDrivenContext */
	private MessageDrivenContext context;

	public MDBExample() {
		super();
		// TODO Auto-generated constructor stub
	}

	/**
	 * Set the associated context. The container calls this method 
	 * after the instance creation.  <br>
	 * 
	 * The enterprise bean instance should store the reference to the context 
	 * object in an instance variable. <br>
	 * 
	 * This method is called with no transaction context.
	 * 
	 * @param newContext A MessageDrivenContext interface for the instance. 
	 * 
	 * @throws EJBException Thrown by the method to indicate a failure caused by a system-level error.
	 */
	public void setMessageDrivenContext(MessageDrivenContext newContext)
		throws EJBException {
		context = newContext;
	}

	public void ejbRemove() throws EJBException {
		// TODO Auto-generated method stub

	}

	public void onMessage(Message arg0) {
		// TODO Auto-generated method stub
		try {
			String msgText;
			if (arg0 instanceof TextMessage) {
			msgText = ((TextMessage)arg0).getText();
			System.out.println("JMSMessageID = "+arg0.getJMSMessageID());
			System.out.println("JMSRedelivered = "+arg0.getJMSRedelivered());
			System.out.println("JMSCorrelationID = "+arg0.getJMSCorrelationID());
			System.out.println("JMSDeliveryMode = "+arg0.getJMSDeliveryMode());
			System.out.println("JMSPriority = "+arg0.getJMSPriority());
			System.out.println("JMSReplyTo = "+arg0.getJMSReplyTo());
			} else {
			msgText = arg0.toString();
			}

			System.out.println("mdbMessage Received: "+ msgText );
		} catch (JMSException jmse) {
			jmse.printStackTrace();
			}
	}

	/**
	 * An ejbCreate method as required by the EJB specification.
	 * 
	 * The container calls the instance?s <code>ejbCreate</code> method 
	 * immediately after instantiation.
	 * 
	 * @ejb.create-method
	 */
	public void ejbCreate() {
	}

}