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

This example Java EE 6 source code file (MailBrowserServlet.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

b, br, connectionspecimpl, connectionspecimpl, http, io, ioexception, javamailconnectionfactory, javamailconnectionfactory, mailbrowserservlet::init, naming, request, response, servlet, servletexception, servletexception, string, string, there, throwable

The Java EE 6 MailBrowserServlet.java source code

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * 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
 * identifying information: "Portions Copyrighted [year]
 * [name of copyright owner]"
 *
 * Contributor(s):
 *
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
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 */

package samples.connectors.mailconnector.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.logging.*;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import javax.naming.*;

//import samples.connectors.mailconnector.ra.outbound.*;
import samples.connectors.mailconnector.api.*;
import samples.connectors.mailconnector.share.*;



/**
 */

public class MailBrowserServlet extends HttpServlet 
{
    JavaMailConnectionFactory connectionFactory = null;

    public static final Logger  logger = 
        Logger.getLogger("samples.connectors.mailconnector.servlet");

    /*
     *  Look up the Connection Factory
     */

    public void init() 
        throws ServletException 
    {
        Context           context = null;

        logger.info("In MailBrowserServlet::init()");

        try
        {
            context = new InitialContext();

            // Look up a connection factory
            connectionFactory = (JavaMailConnectionFactory) 
                context.lookup("java:comp/env/eis/MyConnectionFactory");
        } catch (Throwable t) {
            // Exception or NamingException could be thrown
            logger.severe("MailBrowserServlet::init: Exception: " + 
                t.toString());
	    throw new ServletException("Couldn't get a Connection Factory.");
        }
    }

    public void doPost(HttpServletRequest request,
                       HttpServletResponse response)
        throws IOException, ServletException
    {

        // Acquire request parameters we need

        String foldername = request.getParameter("folder");
        String servername = request.getParameter("server");
        String username   = request.getParameter("username");
	String password   = request.getParameter("password");
        String protocol   = request.getParameter("protocol");

	if ( protocol   == null || protocol.equals("")   ||
	     foldername == null || foldername.equals("") ||
	     servername == null || servername.equals("") ||
	     username   == null || username.equals("")   ||
 	     password   == null || password.equals("") ) 
        {
              RequestDispatcher rd =
                  getServletContext().getRequestDispatcher("/mailbrowser.jsp");
              rd.forward(request, response);
	      return;
        } 

	// Save these values in the session object (would be used as default 
	//  values by JSP page)
	HttpSession session = request.getSession();
	session.setAttribute("folder", foldername);
	session.setAttribute("server", servername);
	session.setAttribute("username", username);
	session.setAttribute("password", password);
	session.setAttribute("protocol", protocol);
	
        // Prepare the beginning of our response

        PrintWriter writer = response.getWriter();
        response.setContentType("text/html");
        writer.println("<html>");
        writer.println("<head>");
	String mailBox = username + "-" + foldername + "@" + servername;
        writer.println("<title>MailBox: " + mailBox + " ");
        writer.println("</head>");
        writer.println("<body bgcolor=\"white\">");

	writer.println("<strong>Mailbox: " + mailBox + " 
");
        
	try 
    	{
	    ConnectionSpecImpl connectionSpec = new ConnectionSpecImpl();
            connectionSpec.setUserName(username);
            connectionSpec.setPassword(password);
            connectionSpec.setServerName(servername);
            connectionSpec.setFolderName(foldername);
            connectionSpec.setProtocol(protocol);

            JavaMailConnection connection = 
	                    connectionFactory.createConnection(connectionSpec);
            
            if ( connection != null )
            {
              javax.mail.Message[] msgs = connection.getNewMessages();


	      if ( msgs != null)
	      {
		writer.println("<table border=\"1\"" +
		               "summary=\"new messages at: " + mailBox +
			       "\"><CAPTION>");
	        if (msgs.length > 1)
		    writer.println("There are " + msgs.length + 
			       " new messages");
		else
		    writer.println("There is only " + msgs.length + 
			       " new message");

		writer.println("</EM>