usertrace.java

随着信息技术的飞速发展和日趋激烈的商业竞争

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 */
package oa.sys;

import javax.servlet.http.HttpSessionBindingEvent;

public class UserTrace
	implements javax.servlet.http.HttpSessionBindingListener {
	private int id;
	private UserList container = UserList.getInstance();
	
	public UserTrace(){
		id=0;
	}
	public void setId(int id) {
		this.id = id;
	}
	public int getId() {
		return this.id;
	}
	public void valueBound(HttpSessionBindingEvent arg0) {
		System.out.println(new Time().getYMDHMS()+"	上线	"+this.id);
		}
	
	public void valueUnbound(HttpSessionBindingEvent arg0) {
		System.out.println(new Time().getYMDHMS()+"	下线	"+this.id);
		if (id != -1) {
			container.removeUser(id);
		}
	}

}