eclipse搭建java web项目

准备条件

eclipse
jdk1.8 （配置jdk环境）
apache-tomcat-8.5.97（记住安装位置）

一

点击完成

开始创建javaweb项目

import java.io.IOException;
import java.io.PrintWriter;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;public class test extends HttpServlet {@Overrideprotected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// 获取 PrintWriter 对象response.setCharacterEncoding("UTF-8");response.setContentType("text/plain; charset=UTF-8");PrintWriter pw = response.getWriter();// 输出 Hello Worldpw.print("输出 Hello World");}
}

目录结构如下：

<?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>fly</servlet-name>
        <servlet-class>fly.test</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>fly</servlet-name>
        <url-pattern>/hi</url-pattern>
    </servlet-mapping>
</web-app>