onlinelist.java

来自「一个专门用来快速开发网站的框架」· Java 代码 · 共 60 行

package com.ksgl.body.member;

/**
 * <p>Title: literature item </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2007</p>
 * <p>Company: </p>
 * @author hj
 * @version 1.0
 */

import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.logging.Log;
import com.ksgl.map.*;

public class OnlineList implements HttpSessionAttributeListener {
    private static Log log = LogFactory.getLog(OnlineList.class);
    private static List list = new ArrayList();

    public void attributeAdded(HttpSessionBindingEvent se) {
        if ("user".equals(se.getName())) {
//            log.info(((T_sys_user)se.getValue()).getName() + "登陆++");
            list.add(se.getValue());
        }
    }

    public void attributeRemoved(HttpSessionBindingEvent se) {
        if ("user".equals(se.getName())) {
//            log.info(((T_sys_user)se.getValue()).getName() + "离线--");
            list.remove(se.getValue());
        }
    }

    public void attributeReplaced(HttpSessionBindingEvent se) {
        if ("user".equals(se.getName())) {
//            log.info(((T_sys_user)se.getValue()).getName() + "Replaced--");
            list.remove(se.getValue());
        }
    }

    public static List getList() {
        return (list);
    }

    public static int getActiveSessions() {
        return list.size();
    }

    public static void userRemoved(UserInfo user) {
        if(list.contains(user)){
            log.info(user.getStrUserName() + "离线");
            list.remove(user);
        }
    }

}