eclipse搭建java web项目

准备条件

1. eclipse
2. jdk1.8 （配置jdk环境）
3. 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 {

    @Override
    protected 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 World
        pw.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>

会出现此界面表示成功