Source Code : Example servlet showing request headers

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Example servlet showing request headers

  
/*
* Copyright 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.
*/
/* $Id: CookieExample.java,v 1.3 2004/03/18 16:40:33 jfarcand Exp $
 *
 */

import java.io.*;
import java.text.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;

/**
 * Example servlet showing request headers
 *
 * @author James Duncan Davidson <duncan@eng.sun.com>
 */

public class CookieExample 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("<html>");
        out.println("<body bgcolor="white">");
        out.println("<head>");

        String title = rb.getString("cookies.title");
        out.println("<title>" + title + "</title>");
        out.println("</head>");
        out.println("<body>");

  // relative links

        // XXX
        // making these absolute till we work out the
        // addition of a PathInfo issue 
  
        out.println("<a href="../cookies.html">");
        out.println("<img src="../images/code.gif" height=24 " +
                    "width=24 align=right border=0 alt="view code"></a>");
        out.println("<a href="../index.html">");
        out.println("<img src="../images/return.gif" height=24 " +
                    "width=24 align=right border=0 alt="return"></a>");

        out.println("<h3>" + title + "</h3>");

        Cookie[] cookies = request.getCookies();
        if ((cookies != null) && (cookies.length > 0)) {
            out.println(rb.getString("cookies.cookies") + "<br>");
            for (int i = 0; i < cookies.length; i++) {
                Cookie cookie = cookies[i];
                out.print("Cookie Name: " + HTMLFilter.filter(cookie.getName())
                          + "<br>");
                out.println("  Cookie Value: " 
                            + HTMLFilter.filter(cookie.getValue())
                            + "<br><br>");
            }
        } else {
            out.println(rb.getString("cookies.no-cookies"));
        }

        String cookieName = request.getParameter("cookiename");
        String cookieValue = request.getParameter("cookievalue");
        if (cookieName != null && cookieValue != null) {
            Cookie cookie = new Cookie(cookieName, cookieValue);
            response.addCookie(cookie);
            out.println("<P>");
            out.println(rb.getString("cookies.set") + "<br>");
            out.print(rb.getString("cookies.name") + "  " 
                      + HTMLFilter.filter(cookieName) + "<br>");
            out.print(rb.getString("cookies.value") + "  " 
                      + HTMLFilter.filter(cookieValue));
        }
        
        out.println("<P>");
        out.println(rb.getString("cookies.make-cookie") + "<br>");
        out.print("<form action="");
        out.println("CookieExample" method=POST>");
        out.print(rb.getString("cookies.name") + "  ");
        out.println("<input type=text length=20 name=cookiename><br>");
        out.print(rb.getString("cookies.value") + "  ");
        out.println("<input type=text length=20 name=cookievalue><br>");
        out.println("<input type=submit></form>");
            
            
        out.println("</body>");
        out.println("</html>");
    }

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

}

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