update

whycrzg

2021-02-23 351b9a53cb9ecebdf8f79db0117f540d9c42c2a4

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package com.fgkj.Listeners;
 
import com.fgkj.dto.UserClient;
 
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;
import java.util.Map;
 
public class Sessionlister implements HttpSessionListener {
 
    public void sessionCreated(HttpSessionEvent event) {
        //System.out.println("session被创建");
    }
 
    public void sessionDestroyed(HttpSessionEvent event) {
        //System.out.println("session被销毁");
        HttpSession session=event.getSession();
        String ip=(String)session.getAttribute("ip");        
        Map<String,UserClient> map=(Map)session.getServletContext().getAttribute("users");
        if(map!=null){            
            if(map.get(ip)!=null){
                map.remove(ip);
            }            
        }
    }
}