Java EE 6 example source code file (JavaMailMessageBean.java)

This example Java EE 6 source code file (JavaMailMessageBean.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Java EE 6 tags/keywords

address, date, date, ejb, in, in, initialcontext, javamailmessagebean, javamailmessagelistener, logging, mdb, mdb, naming, rmi, servlet, session, string, string, we, web

The Java EE 6 JavaMailMessageBean.java source code

/*
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 * Copyright 1997-2009 Sun Microsystems, Inc. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
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package samples.connectors.mailconnector.ejb.mdb;

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 java.util.*;
import java.util.logging.*;
import java.text.*;
import javax.naming.*;
import javax.mail.*;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;


import samples.connectors.mailconnector.api.*;

/**
 * A simple message-driven bean.
 * The code illustrates the requirements of a message-driven bean class:
 * <ul>
 * <li>It implements the MessageDrivenBean and 
 *     <code>JavaMailMessageListener interfaces. 
 * <li>The class is defined as public. 
 * <li>The class cannot be defined as abstract or 
 *     <code>final. 
 * <li>It implements one onMessage method. 
 * <li>It implements one ejbCreate method and one 
 *     <code>ejbRemove method. 
 * <li>It contains a public constructor with no arguments. 
 * <li>It must not define the finalize method.  
 * </ul>
 *
 * Unlike session and entity beans, message-driven beans do not have the remote 
 * or local interfaces that define client access. Client components do not 
 * locate message-driven beans and invoke methods on them. Although 
 * message-driven beans do not have business methods, they may contain helper 
 * methods that are invoked internally by the onMessage method.
 *
 */

public class JavaMailMessageBean implements MessageDrivenBean, 
                                            JavaMailMessageListener 
{
    static final Logger logger = 
        Logger.getLogger("samples.connectors.mailconnector.ejb.mdb");

    private transient MessageDrivenContext mdc = null;
    private Context context;

    /**
     * Default constructor. Creates a bean.
     */

    public JavaMailMessageBean() {
        logger.info("<MDB> In JavaMailMessageBean.JavaMailMessageBean()");
    }

    /**
     * Sets the context for the bean.
     *
     * @param mdc the message-driven-bean context
     */

    public void setMessageDrivenContext(MessageDrivenContext mdc) 
    {
        logger.info("<MDB> In JavaMailMessageBean.setMessageDrivenContext()");
	this.mdc = mdc;
    }

    /**
     * Creates a bean. Required by EJB spec.
     */

    public void ejbCreate() 
    {
	logger.info("<MDB> In JavaMailMessageBean.ejbCreate()");
    }

    /**
     * When the inbox receives a message, the EJB container invokes the 
     * <code>onMessage method of the message-driven bean. The
     * <code>onMessage method displays information from the message 
     * headers, formulates a reply to the message, and sends it. (The code
     * to send the reply is currently commented out.)
     *
     * @param message incoming message
     */

    public void onMessage(javax.mail.Message message) 
    {
   	final String mailer = "JavaMailer";

        try 
	{
	    logger.info("<MDB> ---- Got a message ") ;
	    logger.info("<MDB> SUBJECT: " + message.getSubject() ) ;

	    context = new InitialContext();
	    Session session = 
	        (Session) context.lookup("java:comp/env/TheMailSession");
            
            Message reply = new MimeMessage(session);
            reply.setFrom();

	    Address[] addresses = message.getFrom();
	    if ((addresses != null) || (addresses.length < 1))
	    {
		addresses = message.getReplyTo();
	    }


            logger.info("<MDB> SENDER : " + addresses[0].toString());

            Address[] recepients = message.getFrom();
            if(recepients != null && recepients.length > 0){
                String recepientId = recepients[0].toString();
                if(recepientId.indexOf("@") > 0){
                    recepientId = recepientId.substring(0,recepientId.indexOf("@"));
                }
                //logger.info("<MDB> isCallerInRole("+recepientId+") : " + mdc.isCallerInRole(recepientId));
                logger.info("<MDB> getCallerPrincipal() : " + mdc.getCallerPrincipal());
            }

            reply.setRecipients(Message.RecipientType.TO, addresses);
            reply.setSubject("MDB reply RE: " + message.getSubject());
  
            DateFormat dateFormatter = 
                DateFormat.getDateTimeInstance(DateFormat.LONG, 
                                               DateFormat.SHORT);
 
            Date timeStamp = new Date();
         
            String messageText = "Dear " + addresses[0].toString() + '\n' +
		"Thank you for your email." + '\n' +
             	"We received your message on " + 
             	dateFormatter.format(timeStamp) + ".";

            reply.setText(messageText);

            reply.setHeader("X-Mailer", mailer);
            reply.setSentDate(timeStamp);

	    // We used to reply to the sender, but this might
 	    // send undesired replies when testing with a busy
	    // mailbox. Uncomment the following line if you wish
	    // to do that.

            // Transport.send(reply);


      } catch(Exception e) {
            // logger.info("<MDB> Could not send the email: " + e.toString());
            throw new EJBException(e.getMessage());
      }
    }  // onMessage

    /**
     * Removes the bean. Required by EJB specification.
     */

    public void ejbRemove() 
    {
        logger.info("<MDB> In JavaMailMessageBean.remove()");
    }

} // class