Quelle  CookieExample.java   Sprache: JAVA

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.ResourceBundle;

import jakarta.servlet.ServletException;
import jakarta.servlet.http.Cookie;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;

import util.CookieFilter;
import util.HTMLFilter;

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

public class CookieExample extends HttpServlet {

    private static final long serialVersionUID = 1L;

    @Override
    public void doGet(HttpServletRequest request,
                      HttpServletResponse response)
        throws IOException, ServletException
    {
        ResourceBundle rb = ResourceBundle.getBundle("LocalStrings",request.getLocale());

        String cookieName = request.getParameter("cookiename");
        String cookieValue = request.getParameter("cookievalue");
        Cookie aCookie = null;
        if (cookieName != null && cookieValue != null) {
            aCookie = new Cookie(cookieName, cookieValue);
            aCookie.setPath(request.getContextPath() + "/");
            response.addCookie(aCookie);
        }

        response.setContentType("text/html");
        response.setCharacterEncoding("UTF-8");

        PrintWriter out = response.getWriter();
        out.println("");
        out.println("");
        out.println("UTF-8\" />");

        String title = rb.getString("cookies.title");
        out.println("");
        out.println("");
        out.println("white\">");

        // relative links

        // XXX
        // making these absolute till we work out the
        // addition of a PathInfo issue

        out.println("../cookies.html\">");
        out.println("../images/code.gif\" height=24 " +
                    "width=24 align=right border=0 alt=\"view code\">");
        out.println("../index.html\">");
        out.println("../images/return.gif\" height=24 " +
                    "width=24 align=right border=0 alt=\"return\">");

        out.println("

" + title + "

");

        Cookie[] cookies = request.getCookies();
        if ((cookies != null) && (cookies.length > 0)) {
            HttpSession session = request.getSession(false);
            String sessionId = null;
            if (session != null) {
                sessionId = session.getId();
            }
            out.println(rb.getString("cookies.cookies") + "
");
            for (Cookie cookie : cookies) {
                String cName = cookie.getName();
                String cValue = cookie.getValue();
                out.print("Cookie Name: " + HTMLFilter.filter(cName) + "
");
                out.println(" Cookie Value: "
                        + HTMLFilter.filter(CookieFilter.filter(cName, cValue, sessionId))
                        + "

");
            }
        } else {
            out.println(rb.getString("cookies.no-cookies"));
        }

        if (aCookie != null) {
            out.println("

");
            out.println(rb.getString("cookies.set") + "
");
            out.print(rb.getString("cookies.name") + " "
                      + HTMLFilter.filter(cookieName) + "
");
            out.print(rb.getString("cookies.value") + " "
                      + HTMLFilter.filter(cookieValue));
        }

        out.println("

");
        out.println(rb.getString("cookies.make-cookie") + "
");
        out.print("

");
        out.println("CookieExample\" method=POST>");
        out.print(rb.getString("cookies.name") + " ");
        out.println("
");
        out.print(rb.getString("cookies.value") + " ");
        out.println("
");
        out.println(""

);


        out.println("");
        out.println("");
    }

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

}