source: nutchez-0.1/tomcat/webapps/examples/WEB-INF/classes/SessionExample.java @ 226

Last change on this file since 226 was 66, checked in by waue, 15 years ago

NutchEz - an easy way to nutch
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1/*
2* Licensed to the Apache Software Foundation (ASF) under one or more
3* contributor license agreements.  See the NOTICE file distributed with
4* this work for additional information regarding copyright ownership.
5* The ASF licenses this file to You under the Apache License, Version 2.0
6* (the "License"); you may not use this file except in compliance with
7* the License.  You may obtain a copy of the License at
8*
9*     http://www.apache.org/licenses/LICENSE-2.0
10*
11* Unless required by applicable law or agreed to in writing, software
12* distributed under the License is distributed on an "AS IS" BASIS,
13* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14* See the License for the specific language governing permissions and
15* limitations under the License.
16*/
17/* $Id: SessionExample.java 500674 2007-01-27 23:15:00Z markt $
18 *
19 */
20
21import java.io.*;
22import java.util.*;
23import javax.servlet.*;
24import javax.servlet.http.*;
25
26import util.HTMLFilter;
27
28/**
29 * Example servlet showing request headers
30 *
31 * @author James Duncan Davidson <duncan@eng.sun.com>
32 */
33
34public class SessionExample extends HttpServlet {
35
36    ResourceBundle rb = ResourceBundle.getBundle("LocalStrings");
37   
38    public void doGet(HttpServletRequest request,
39                      HttpServletResponse response)
40        throws IOException, ServletException
41    {
42        response.setContentType("text/html");
43
44        PrintWriter out = response.getWriter();
45        out.println("<html>");
46        out.println("<body bgcolor=\"white\">");
47        out.println("<head>");
48
49        String title = rb.getString("sessions.title");
50        out.println("<title>" + title + "</title>");
51        out.println("</head>");
52        out.println("<body>");
53
54        // img stuff not req'd for source code html showing
55  // relative links everywhere!
56
57        // XXX
58        // making these absolute till we work out the
59        // addition of a PathInfo issue
60 
61        out.println("<a href=\"../sessions.html\">");
62        out.println("<img src=\"../images/code.gif\" height=24 " +
63                    "width=24 align=right border=0 alt=\"view code\"></a>");
64        out.println("<a href=\"../index.html\">");
65        out.println("<img src=\"../images/return.gif\" height=24 " +
66                    "width=24 align=right border=0 alt=\"return\"></a>");
67
68        out.println("<h3>" + title + "</h3>");
69
70        HttpSession session = request.getSession(true);
71        out.println(rb.getString("sessions.id") + " " + session.getId());
72        out.println("<br>");
73        out.println(rb.getString("sessions.created") + " ");
74        out.println(new Date(session.getCreationTime()) + "<br>");
75        out.println(rb.getString("sessions.lastaccessed") + " ");
76        out.println(new Date(session.getLastAccessedTime()));
77
78        String dataName = request.getParameter("dataname");
79        String dataValue = request.getParameter("datavalue");
80        if (dataName != null && dataValue != null) {
81            session.setAttribute(dataName, dataValue);
82        }
83
84        out.println("<P>");
85        out.println(rb.getString("sessions.data") + "<br>");
86        Enumeration names = session.getAttributeNames();
87        while (names.hasMoreElements()) {
88            String name = (String) names.nextElement(); 
89            String value = session.getAttribute(name).toString();
90            out.println(HTMLFilter.filter(name) + " = " 
91                        + HTMLFilter.filter(value) + "<br>");
92        }
93
94        out.println("<P>");
95        out.print("<form action=\"");
96  out.print(response.encodeURL("SessionExample"));
97        out.print("\" ");
98        out.println("method=POST>");
99        out.println(rb.getString("sessions.dataname"));
100        out.println("<input type=text size=20 name=dataname>");
101        out.println("<br>");
102        out.println(rb.getString("sessions.datavalue"));
103        out.println("<input type=text size=20 name=datavalue>");
104        out.println("<br>");
105        out.println("<input type=submit>");
106        out.println("</form>");
107
108        out.println("<P>GET based form:<br>");
109        out.print("<form action=\"");
110  out.print(response.encodeURL("SessionExample"));
111        out.print("\" ");
112        out.println("method=GET>");
113        out.println(rb.getString("sessions.dataname"));
114        out.println("<input type=text size=20 name=dataname>");
115        out.println("<br>");
116        out.println(rb.getString("sessions.datavalue"));
117        out.println("<input type=text size=20 name=datavalue>");
118        out.println("<br>");
119        out.println("<input type=submit>");
120        out.println("</form>");
121
122        out.print("<p><a href=\"");
123  out.print(response.encodeURL("SessionExample?dataname=foo&datavalue=bar"));
124  out.println("\" >URL encoded </a>");
125 
126        out.println("</body>");
127        out.println("</html>");
128       
129        out.println("</body>");
130        out.println("</html>");
131    }
132
133    public void doPost(HttpServletRequest request,
134                      HttpServletResponse response)
135        throws IOException, ServletException
136    {
137        doGet(request, response);
138    }
139
140}
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