JavaWeb13.3【Tomcat&Servlet：Servlet（server applet）】

 

 

 

 

 

 

 

 

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">

    <!--配置Servlet-->
    <servlet>
        <servlet-name>demo1</servlet-name>
        <servlet-class>com.haifei.servlet.ServletDemo1</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>demo1</servlet-name>
        <url-pattern>/demo1</url-pattern>
    </servlet-mapping>
    
</web-app>

package com.haifei.servlet;

import javax.servlet.*;
import java.io.IOException;

/**
 * Servlet快速入门
 */
public class ServletDemo1 implements Servlet{
    @Override
    public void init(ServletConfig servletConfig) throws ServletException {

    }

    @Override
    public ServletConfig getServletConfig() {
        return null;
    }

    //提供服务
    @Override
    public void service(ServletRequest servletRequest, ServletResponse servletResponse) throws ServletException, IOException {
        System.out.println("hello servlet");
        /*
        在web.xml中配置好Servlet后
        在浏览器地址栏http://localhost:8080/day13_tomcat_war_exploded/demo1每访问一次
        IDEA控制台输出一次hello servlet
         */
    }

    @Override
    public String getServletInfo() {
        return null;
    }

    @Override
    public void destroy() {

    }
}