55 lines
1.8 KiB
HTML
55 lines
1.8 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<META http-equiv="Content-Type" content="text/html; charset=utf-8">
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<LINK rel="stylesheet" type="text/css" href="../../../rzahg/ic.css">
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<title>Example: SessionSample.java</title>
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</head>
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<BODY>
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<!-- Java sync-link -->
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<SCRIPT LANGUAGE="Javascript" SRC="../../../rzahg/synch.js" TYPE="text/javascript"></SCRIPT>
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<h5><a name="sessamp"></a>Example: SessionSample.java</h5>
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<pre>import java.io.*;
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import java.util.*;
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import javax.servlet.*;
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import javax.servlet.http.*;
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public class SessionSample extends HttpServlet {
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public void doGet (HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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// Step 1: Get the Session object
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boolean create = true;
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HttpSession session = request.getSession(create);
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// Step 2: Get the session data value
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Integer ival = (Integer) session.getValue ("sessiontest.counter");
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if (ival == null) {
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ival = new Integer (1);
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}
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else {
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ival = new Integer(ival.intValue () + 1);
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}
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session.putValue ("sessiontest.counter", ival);
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// Step 3: Output the page
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response.setContentType("text/html");
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PrintWriter out = response.getWriter();
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out.println("<html>");
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out.println("<head><title>Session Tracking Test</title></head>");
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out.println("<body>");
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out.println("<h1>Session Tracking Test</h1>");
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out.println("You have hit this page " + ival + " times" + "<br>");
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out.println("Your " + request.getHeader("Cookie"));
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out.println("</body></html>");
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}
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}</pre>
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</body>
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</html>
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