/* * Copyright 2001-2007 Sun Microsystems, Inc. All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * *   - Redistributions of source code must retain the above copyright *     notice, this list of conditions and the following disclaimer. * *   - Redistributions in binary form must reproduce the above copyright *     notice, this list of conditions and the following disclaimer in the *     documentation and/or other materials provided with the distribution. * *   - Neither the name of Sun Microsystems nor the names of its *     contributors may be used to endorse or promote products derived *     from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */package demo;import java.io.*;import javax.servlet.*;import javax.servlet.http.*;/** * This servlet is used to determine whether the user is logged in before * forwarding the request to the selected URL. */public class FilterServlet extends HttpServlet {    /**     * This method handles the "POST" submission from two forms: the     * login form and the message compose form.     */    public void doPost(HttpServletRequest request, 		       HttpServletResponse  response) 		       throws IOException, ServletException {	String servletPath = request.getServletPath();	servletPath = servletPath.concat(".jsp");		getServletConfig().getServletContext().	    getRequestDispatcher("/" + servletPath).forward(request, response);    }    /**     * This method handles the GET requests from the client.     */    public void doGet(HttpServletRequest request, 		      HttpServletResponse  response)		      throws IOException, ServletException {      	// check to be sure we're still logged in 	// before forwarding the request.	HttpSession session = request.getSession();	MailUserBean mailuser = (MailUserBean)session.getAttribute("mailuser");	String servletPath = request.getServletPath();	servletPath = servletPath.concat(".jsp");		if (mailuser.isLoggedIn())	    getServletConfig().getServletContext().		getRequestDispatcher("/" + servletPath).		forward(request, response);	else	    getServletConfig().getServletContext().		getRequestDispatcher("/index.html").		forward(request, response);    }}