alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

What this is

This file 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.

Other links

The source code

/* $Id: SessionExample.java,v 1.6 2004/02/22 22:57:59 billbarker Exp $
 *
 */
/*   
 *  Copyright 1999-2004 The Apache Software Foundation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
import java.util.Enumeration;
import java.util.ResourceBundle;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import util.HTMLFilter;

/**
 * Example servlet showing request headers
 *
 * @author James Duncan Davidson 
 */

public class SessionExample extends HttpServlet {

    ResourceBundle rb = ResourceBundle.getBundle("LocalStrings");
    
    public void doGet(HttpServletRequest request,
                      HttpServletResponse response)
        throws IOException, ServletException
    {
        response.setContentType("text/html");

        PrintWriter out = response.getWriter();
        out.println("");
        out.println("");
        out.println("");

        String title = rb.getString("sessions.title");
        out.println("" + title + "");
        out.println("");
        out.println("");

        // img stuff not req'd for source code html showing
	// relative links everywhere!

        // XXX
        // making these absolute till we work out the
        // addition of a PathInfo issue 
	
        out.println("");
        out.println("\"view");
        out.println("");
        out.println("\"return\"");

        out.println("

" + title + "

"); HttpSession session = request.getSession(); out.println(rb.getString("sessions.id") + " " + session.getId()); out.println("
"); out.println(rb.getString("sessions.isnew") + " " + session.isNew() + "
"); out.println(rb.getString("sessions.created") + " "); out.println(new Date(session.getCreationTime()) + "
"); out.println(rb.getString("sessions.lastaccessed") + " "); out.println(new Date(session.getLastAccessedTime())); out.println("
"); out.println(rb.getString("sessions.requestedid") + " " + request.getRequestedSessionId() + "
"); out.println(rb.getString("sessions.requestedidvalid") + " " + request.isRequestedSessionIdValid() + "
"); out.println(rb.getString("sessions.fromcookie") + " " + request.isRequestedSessionIdFromCookie() + "
"); out.println(rb.getString("sessions.fromurl") + " " + request.isRequestedSessionIdFromURL() + "
"); String invalidate = request.getParameter("INVALIDATE"); if(invalidate != null){ session.invalidate(); }else{ String dataName = request.getParameter("dataname"); String dataValue = request.getParameter("datavalue"); if (dataName != null && dataValue != null) { session.setAttribute(dataName, dataValue); } out.println("

"); out.println(rb.getString("sessions.data") + "
"); Enumeration names = session.getAttributeNames(); while (names.hasMoreElements()) { String name = (String) names.nextElement(); String value = session.getAttribute(name).toString(); out.println(HTMLFilter.filter(name) + " = " + HTMLFilter.filter(value) + "
"); } } out.println("

"); out.print("

"); out.println(rb.getString("sessions.dataname")); out.println(""); out.println("
"); out.println(rb.getString("sessions.datavalue")); out.println(""); out.println("
"); out.println(""); out.println("
"); out.println("

GET based form:
"); out.print("

"); out.println(rb.getString("sessions.dataname")); out.println(""); out.println("
"); out.println(rb.getString("sessions.datavalue")); out.println(""); out.println("
"); out.println(""); out.println("
"); out.println("

"); out.println("

Invalidate session:
"); out.print("

"); out.println(""); out.println(""); out.println("
"); out.print("

URL encoded "); out.println(""); out.println(""); out.println(""); out.println(""); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { doGet(request, response); } }

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.