第一个servlet小程序

com.fry.servlet.HelloServlet

 package com.fry.servlet;

 import javax.servlet.ServletException;

 import javax.servlet.http.HttpServlet;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpServletResponse;

 import java.io.IOException;

 import java.io.PrintWriter;

 public class HelloServlet extends HttpServlet {

     @Override

     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

         System.out.println("接收到get请求！！！");

         PrintWriter out=resp.getWriter();

         resp.setContentType("text/html;charset=utf-8");

         out.println("<strong>服务器已经接收到get请求！！！！！！</strong><br>");

     }

     @Override

     protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

         System.out.println("接收到post请求！！！");

     }

 }

index.jsp

 <%--

   Created by IntelliJ IDEA.

   User: user

   Date: 2017/10/31

   Time: 13:46

   To change this template use File | Settings | File Templates.

 --%>

 <%@ page contentType="text/html;charset=UTF-8" language="java" %>

 <html>

   <head>

     <title>$Title$</title>

   </head>

   <body>

   欢迎访问我的第一个JSP。<br>

   <a href="hi">get请求</a>

   </body>

 </html>

WEB-INF/web.xml

 <?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">

     <servlet>

         <servlet-name>helloServlet</servlet-name>

         <servlet-class>com.fry.servlet.HelloServlet</servlet-class>

     </servlet>

     <servlet-mapping>

         <servlet-name>helloServlet</servlet-name>

         <url-pattern>/hi</url-pattern>

     </servlet-mapping>

 </web-app>

目录结构

第一个servlet小程序-LMLPHP