refreshtask.java

oa办公系统

/**
 * FileName:RefreshTask.java,v 1.0 created in 2008-11-10 上午09:00:49
 * Created by yuankai
 * Copyright (c) 2008 www.ecjtu.jx.cn
 * All Rights Reserved.
 */
package cn.jx.ecjtu.oa.services;

import java.util.TimerTask;

import javax.servlet.ServletContext;

import cn.jx.ecjtu.oa.common.Constant;
/**
 * @todo:定时器执行的刷新业务(更新appliaction中在线人员列表的在线时间和维护在线人员数量)
 * @author yuankai,胡楚斌,李春鹏
 * @version $Revision: 1.4 $
 * @since 1.0
 */

public class RefreshTask extends TimerTask{
    
    private ServletContext context;  
    private static boolean isRunning=true;
    public RefreshTask(ServletContext context) 
    {
	    super();
		this.context = context;
    }
    
    public void run() {//循环执行
	if(isRunning)
	{
	    //....
		//判断application的在线列表是不是存在
		if(null!=context.getAttribute(Constant.ONLINELIST_IN_APPLICATION))
		{
			OnlineList list=(OnlineList) context.getAttribute(Constant.ONLINELIST_IN_APPLICATION);
            list.increaseOnlineTime();//所有用户在线时间加1分钟
            context.setAttribute(Constant.ONLINELIST_IN_APPLICATION, list);
		}
	    System.out.println("application中所有用户在线时长添加一分钟\n");

	}
    }

}