tomcat7-examples 7.0.26-1ubuntu1 / usr / share / tomcat7-examples / examples / servlets / sessions.html

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<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>

<body bgcolor="#FFFFFF">
<p><font color="#0000FF"><a href="servlet/SessionExample"><img src="images/execute.gif" align="right" border="0"></a><a href="index.html"><img src="images/return.gif" width="24" height="24" align="right" border="0"></a></font></p>
<h3>Source Code for Session Example<font color="#0000FF"><br>
  </font> </h3>
<font color="#0000FF"></font>
<pre><font color="#0000FF">import</font> java.io.*;
<font color="#0000FF">import</font> java.util.*;
<font color="#0000FF">import</font> javax.servlet.*;
<font color="#0000FF">import</font> javax.servlet.http.*;

<font color="#0000FF">public class</font> SessionExample <font color="#0000FF">extends</font> HttpServlet {

    <font color="#0000FF">public void</font> doGet(HttpServletRequest request, HttpServletResponse response)
    <font color="#0000FF">throws</font> IOException, ServletException
    {
        response.setContentType(&quot;<font color="#009900">text/html</font>&quot;);
        PrintWriter out = response.getWriter();

        HttpSession session = request.getSession(true);

        <font color="#CC0000">// print session info</font>

        Date created = new Date(session.getCreationTime());
        Date accessed = new Date(session.getLastAccessedTime());
        out.println(&quot;<font color="#009900">ID </font>&quot; + session.getId());
        out.println(&quot;<font color="#009900">Created: </font>&quot; + created);
        out.println(&quot;<font color="#009900">Last Accessed: </font>&quot; + accessed);

        <font color="#CC0000">// set session info if needed</font>

        String dataName = request.getParameter(&quot;<font color="#009900">dataName</font>&quot;);
        if (dataName != null &amp;&amp; dataName.length() &gt; 0) {
            String dataValue = request.getParameter(&quot;<font color="#009900">dataValue</font>&quot;);
            session.setAttribute(dataName, dataValue);
        }

        // print session contents

        Enumeration e = session.getAttributeNames();
        while (e.hasMoreElements()) {
            String name = (String)e.nextElement();
            String value = session.getAttribute(name).toString();
            out.println(name + &quot; <font color="#009900">= </font>&quot; + value);
        }
    }
}</pre>
</body>
</html>

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