关于Listener

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Listener练习代码

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package com.xiaoguan.test;

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

@WebListener
public class MyListener implements ServletContextListener {

    @Override
    public void contextInitialized(ServletContextEvent sce) {
        //Servletcontext创建时调用
    }

    @Override
    public void contextDestroyed(ServletContextEvent sce) {

    }
}

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<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_6_0.xsd"
         version="6.0">
    <listener>
        <listener-class>com.xiaoguan.test.MyListener</listener-class>
    </listener>
</web-app>