PrintWriter out = resp.getWriter();
resp.setContentType("text/html");
HttpSession thisUser = req.getSession(true);
Integer visits;
if(!thisUser.isNew()) { //Don't check newly created sessions
visits = (Integer)thisUser.getValue("visitcounter.visits");
if(visits == null)
visits = new Integer(1);
else
visits = new Integer(visits.intValue() + 1);
}
else
visits = new Integer(1);
// Put the new count in the session
thisUser.putValue("visitcounter.visits", visits);
// Finally, display the results and give them the session ID too
out.println("<HTML><HEAD><TITLE>Visit Counter</TITLE></HEAD>");
out.println("<BODY>You have visited this page " + visits + " time[s]");
out.println("since your last session expired.");
out.println("Your Session ID is " + thisUser.getId());
out.println("</BODY></HTML>");
