sessioncounter.java

选课系统,基于SSH2的选课系统,欢迎下载

package xiong.gang.servlet;

import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;

public class SessionCounter implements HttpSessionListener {
	private static int activeSessions = 0;
	public void sessionCreated(HttpSessionEvent arg0) {
		activeSessions++;

	}

	public void sessionDestroyed(HttpSessionEvent arg0) {
		if (activeSessions > 0)
			   activeSessions--;
	}
	public static int getActiveSessions() {
		  return activeSessions;
		 }
}