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