001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 /* $Id: RequestHeaderExample.java 664175 2008-06-06 22:43:44Z djencks $
018 *
019 */
020
021 import java.io.IOException;
022 import java.io.PrintWriter;
023 import java.util.Enumeration;
024 import java.util.ResourceBundle;
025
026 import javax.servlet.ServletException;
027 import javax.servlet.http.HttpServlet;
028 import javax.servlet.http.HttpServletRequest;
029 import javax.servlet.http.HttpServletResponse;
030
031 import util.HTMLFilter;
032
033 /**
034 * Example servlet showing request headers
035 *
036 * @author James Duncan Davidson <duncan@eng.sun.com>
037 */
038
039 public class RequestHeaderExample extends HttpServlet {
040
041 ResourceBundle rb = ResourceBundle.getBundle("LocalStrings");
042
043 public void doGet(HttpServletRequest request,
044 HttpServletResponse response)
045 throws IOException, ServletException {
046 response.setContentType("text/html");
047
048 PrintWriter out = response.getWriter();
049 out.println("<html>");
050 out.println("<body bgcolor=\"white\">");
051 out.println("<head>");
052
053 String title = rb.getString("requestheader.title");
054 out.println("<title>" + title + "</title>");
055 out.println("</head>");
056 out.println("<body>");
057
058 // all links relative
059
060 // XXX
061 // making these absolute till we work out the
062 // addition of a PathInfo issue
063
064 out.println("<a href=\"../reqheaders.html\">");
065 out.println("<img src=\"../images/code.gif\" height=24 " +
066 "width=24 align=right border=0 alt=\"view code\"></a>");
067 out.println("<a href=\"../index.html\">");
068 out.println("<img src=\"../images/return.gif\" height=24 " +
069 "width=24 align=right border=0 alt=\"return\"></a>");
070
071 out.println("<h3>" + title + "</h3>");
072 out.println("<table border=0>");
073 Enumeration e = request.getHeaderNames();
074 while (e.hasMoreElements()) {
075 String headerName = (String) e.nextElement();
076 String headerValue = request.getHeader(headerName);
077 out.println("<tr><td bgcolor=\"#CCCCCC\">");
078 out.println(HTMLFilter.filter(headerName));
079 out.println("</td><td>");
080 out.println(HTMLFilter.filter(headerValue));
081 out.println("</td></tr>");
082 }
083 out.println("</table>");
084 }
085
086 public void doPost(HttpServletRequest request,
087 HttpServletResponse response)
088 throws IOException, ServletException {
089 doGet(request, response);
090 }
091
092 }
093