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/Users/lyon/j4p/src/net/server/servlets/SessionExample.java
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1 package net.server.servlets;
2
3 /* $Id: SessionExample.java,v 1.3 1999/04/10 05:22:10 duncan Exp $
4 *
5 */
6
7 import javax.servlet.ServletException;
8 import javax.servlet.http.HttpServlet;
9 import javax.servlet.http.HttpServletRequest;
10 import javax.servlet.http.HttpServletResponse;
11 import javax.servlet.http.HttpSession;
12 import java.io.IOException;
13 import java.io.PrintWriter;
14 import java.util.Date;
15 import java.util.ResourceBundle;
16
17
18 /**
19 * Example servlet showing request headers
20 *
21 * @author James Duncan Davidson <duncan@eng.sun.com>
22 */
23
24 public class SessionExample extends HttpServlet {
25
26 ResourceBundle rb = ResourceBundle.getBundle("LocalStrings");
27
28 public void doGet(HttpServletRequest request,
29 HttpServletResponse response)
30 throws IOException, ServletException {
31 response.setContentType("text/html");
32
33 PrintWriter out = response.getWriter();
34 out.println("<html>");
35 out.println("<body bgcolor=\"white\">");
36 out.println("<head>");
37
38 String title = rb.getString("sessions.title");
39 out.println("<title>" + title + "</title>");
40 out.println("</head>");
41 out.println("<body>");
42 out.println("<p>sw409 sessions</p>");
43
44 // img stuff not req'd for source code html showing
45 // relative links everywhere!
46
47 out.println("<a href=\"../servlets/sessions.html\">");
48 out.println("<img src=\"../images/code.gif\" height=24 " +
49 "width=24 align=right border=0 alt=\"view code\"></a>");
50 out.println("<a href=\"../servlets/index.html\">");
51 out.println("<img src=\"../images/return.gif\" height=24 " +
52 "width=24 align=right border=0 alt=\"return\"></a>");
53
54 out.println("<h3>" + title + "</h3>");
55
56 // How to get an HttpSession
57
58 HttpSession session = request.getSession();
59 out.println(rb.getString("sessions.id") + " " + session.getId());
60 out.println("<br>");
61 out.println(rb.getString("sessions.created") + " ");
62 out.println(new Date(session.getCreationTime()) + "<br>");
63 out.println(rb.getString("sessions.lastaccessed") + " ");
64 out.println(new Date(session.getLastAccessedTime()));
65
66 String dataName = request.getParameter("dataname");
67 String dataValue = request.getParameter("datavalue");
68 if (dataName != null && dataValue != null) {
69 session.putValue(dataName, dataValue);
70 }
71
72 out.println("<P>");
73 out.println(rb.getString("sessions.data") + "<br>");
74 String[] valueNames = session.getValueNames();
75 if (valueNames != null && valueNames.length > 0) {
76 for (int i = 0; i < valueNames.length; i++) {
77 String name = valueNames[i];
78 String value = session.getValue(name).toString();
79 out.println(name + " = " + value + "<br>");
80 }
81 }
82
83 out.println("<P>");
84 out.print("<form action=\"");
85 out.print("SessionExample\" ");
86 out.println("method=POST>");
87 out.println(rb.getString("sessions.dataname"));
88 out.println("<input type=text size=20 name=dataname>");
89 out.println("<br>");
90 out.println(rb.getString("sessions.datavalue"));
91 out.println("<input type=text size=20 name=datavalue>");
92 out.println("<br>");
93 out.println("<input type=submit>");
94 out.println("</form>");
95
96 out.println("</body>");
97 out.println("</html>");
98
99 out.println("</body>");
100 out.println("</html>");
101 }
102
103 public void doPost(HttpServletRequest request,
104 HttpServletResponse response)
105 throws IOException, ServletException {
106 doGet(request, response);
107 }
108
109 }
110