sessionlistener.java

来自「一个用java编写的功能强大的OA系统」· Java 代码 · 共 62 行

package com.redmoon.oa;

import javax.servlet.http.*;
import java.util.Map;
import java.util.HashMap;
import com.redmoon.oa.pvg.Privilege;
import java.util.Locale;
import cn.js.fan.util.ResBundle;


public class SessionListener implements HttpSessionListener {
    private static int sessionCount = 0;
    private static Map sessionMaps = new HashMap(); 

    
    public void sessionCreated(HttpSessionEvent httpSessionEvent) {
        HttpSession session = httpSessionEvent.getSession();
        String sessionId = session.getId();
        
        sessionMaps.put(sessionId, session);

        sessionCount++;
    }

    
    public void sessionDestroyed(HttpSessionEvent httpSessionEvent) {
        sessionCount--;
        HttpSession session = httpSessionEvent.getSession();
        String userName = (String)session.getAttribute(Privilege.NAME);
        if (userName!=null) {
            
            Locale locale = (Locale) session.getAttribute("locale");
            String str = "";
            if (locale != null) {
                try {
                    ResBundle rb = new ResBundle("res.module.log", locale);
                    str = rb.get("action_logout");
                } catch (Exception e) {
                    System.out.println(this.getClass().getName() + ":" +
                                       e.getMessage());
                }
            }

            LogUtil.log((String) session.getAttribute(Privilege.NAME), "",
                        LogDb.TYPE_LOGOUT, str);
        }
        else
            System.out.println(this.getClass().getName() + ": userName=null sessionId=" + session.getId());
        String sessionId = session.getId();
        sessionMaps.remove(sessionId); 
        
    }

    public static int getSessionCount() {
        return sessionCount;
    }

    public static Map getSessionMaps() {
        return sessionMaps;
    }
}