SpringBoot之监听器

MyServletContextListener.java

package com.zns.listener;

import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.annotation.WebListener;

@WebListener
public class MyServletContextListener implements ServletContextListener {
    @Override
    public void contextInitialized(ServletContextEvent event) {
        System.out.println("ServletContex初始化");
    }
    @Override
    public void contextDestroyed(ServletContextEvent event) {
        System.out.println("ServletContex销毁");
    }
}

MyHttpSessionListener.java

package com.zns.listener;

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

/**
 * 监听Session的创建与销毁
 *
 */
@WebListener
public class MyHttpSessionListener implements HttpSessionListener {
    @Override
    public void sessionCreated(HttpSessionEvent event) {
        System.out.println("Session被创建");
    }
    @Override
    public void sessionDestroyed(HttpSessionEvent event) {
        System.out.println("Session被销毁");
    }
}

在启动类增加@ServletComponentScan注解