Print the request headers and the session attributes
<%-- Copyright (c) 2002 by Phil Hanna All rights reserved. You may study, use, modify, and distribute this software for any purpose provided that this copyright notice appears in all copies. This software is provided without warranty either expressed or implied. --%> <%@ page errorPage="ErrorPage.jsp" import="java.io.*" import="java.util.*" %> <% Enumeration enames; Map map; String title; // Print the request headers map = new TreeMap(); enames = request.getHeaderNames(); while (enames.hasMoreElements()) { String name = (String) enames.nextElement(); String value = request.getHeader(name); map.put(name, value); } out.println(createTable(map, "Request Headers")); // Print the session attributes map = new TreeMap(); enames = session.getAttributeNames(); while (enames.hasMoreElements()) { String name = (String) enames.nextElement(); String value = "" + session.getAttribute(name); map.put(name, value); } out.println(createTable(map, "Session Attributes")); %> <%-- Define a method to create an HTML table --%> <%! private static String createTable(Map map, String title) { StringBuffer sb = new StringBuffer(); // Generate the header lines sb.append("<table border='1' cellpadding='3'>"); sb.append("<tr>"); sb.append("<th colspan='2'>"); sb.append(title); sb.append("</th>"); sb.append("</tr>"); // Generate the table rows Iterator imap = map.entrySet().iterator(); while (imap.hasNext()) { Map.Entry entry = (Map.Entry) imap.next(); String key = (String) entry.getKey(); String value = (String) entry.getValue(); sb.append("<tr>"); sb.append("<td>"); sb.append(key); sb.append("</td>"); sb.append("<td>"); sb.append(value); sb.append("</td>"); sb.append("</tr>"); } // Generate the footer lines sb.append("</table><p></p>"); // Return the generated HTML return sb.toString(); } %>