sessioncontrol.java

采用Eclispe开发平台

package com.whatratimes.edu.webedu;

import com.whatratimes.tables.t_user;

import javax.servlet.http.HttpSessionListener;
import javax.servlet.http.HttpSessionEvent;
import java.util.Hashtable;

/**
 * User: Tao
 * Date: Aug 4, 2003
 * Time: 8:15:13 AM
 */
public class SessionControl implements HttpSessionListener

{
    public static Hashtable loginedUsers = new Hashtable();

    public void sessionCreated(HttpSessionEvent event)
    {
        System.out.println ( "");

    }

    public void sessionDestroyed(HttpSessionEvent event)
    {

        Object o = event.getSession().getAttribute("User");
        if (o != null)
        {
            t_user user = (t_user) o;

            System.out.println("Session timeout : " + user.UserId);

            loginedUsers.remove( new Integer(user.UserId));
        }
    }
}