Apr 28

ShowSession.java Servlet that uses session tracking to determine if the client is a repeat visitor. Uses the ServletUtilities class to simplify the DOCTYPE and HEAD output. #Programming Code Examples #Java/J2EE/J2ME #Servlet 

ShowSession.java  Servlet that uses session tracking to determine if the client is a repeat visitor. Uses the ServletUtilities  class to simplify the DOCTYPE and HEAD output.


package cwp;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.net.*;
import java.util.*;

/** Simple example of session tracking.
 *  

 *  Taken from Core Web Programming Java 2 Edition
 *  from Prentice Hall and Sun Microsystems Press,
 *  .
 *  May be freely used or adapted.
 */

public class ShowSession extends HttpServlet {
  public void doGet(HttpServletRequest request,
                    HttpServletResponse response)
      throws ServletException, IOException {
    response.setContentType("text/html");
    PrintWriter out = response.getWriter();
    String title = "Session Tracking Example";
    HttpSession session = request.getSession(true);
    String heading;
    Integer accessCount =
      (Integer)session.getAttribute("accessCount");
    if (accessCount == null) {
      accessCount = new Integer(0);
      heading = "Welcome, Newcomer";
    } else {
      heading = "Welcome Back";
      accessCount = new Integer(accessCount.intValue() + 1);
    }
    // Use setAttribute instead of putValue in version 2.2.
    session.setAttribute("accessCount", accessCount);

    out.println(ServletUtilities.headWithTitle(title) +
                "n" +
                "
" + heading + "
n" +
                "
Information on Your Session:
n" +
                "n" +
                "n" +
                "  n" +
                "  n" +
                "  n" +
                "  n" +
                "  
Info TypeValuen" +
                "
IDn" +
                "  " + session.getId() + "n" +
                "
Creation Timen" +
                "  " +
                new Date(session.getCreationTime()) + "n" +
                "
Time of Last Accessn" +
                "  " +
                new Date(session.getLastAccessedTime()) + "n" +
                "
Number of Previous Accessesn" +
                "  " + accessCount + "n" +
                "
n" +
                "");

  }

  /** Handle GET and POST requests identically. */

  public void doPost(HttpServletRequest request,
                     HttpServletResponse response)
      throws ServletException, IOException {
    doGet(request, response);
  }
}

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10255
Categories:Programming Code Examples, Java/J2EE/J2ME, Servlet
Tags:Java/J2EE/J2MEServlet
Post Data:2017-01-02 16:04:28

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