spring监听器

/**
 * @description: 监听器
 * @author: Lawrence
 * @create: 2019-03-18 10:35
 * @Version: 2.0
 **/
@Component
@ComponentScan
public class Listerner implements HttpSessionListener {

    private static int online = 0;

    @Override
    public void sessionCreated(HttpSessionEvent se) {
        System.out.print("创建session,当前在线人数为："+online+"\n");
        online++;
    }

    @Override
    public void sessionDestroyed(HttpSessionEvent se) {
        System.out.print("销毁session"+"/n");

    }
}