servlet3.0 注解开发 helloworld

使用编辑器为MyEclipse 版本2018 .9

当前版本

老版本

新建一个Servlet

 1 package com.xiaou;
 2 
 3 import java.io.IOException;
 4 
 5 import javax.servlet.ServletException;
 6 import javax.servlet.annotation.WebServlet;
 7 import javax.servlet.http.HttpServlet;
 8 import javax.servlet.http.HttpServletRequest;
 9 import javax.servlet.http.HttpServletResponse;
10 
11 @WebServlet(name="servlet1",urlPatterns="/helloworld")
12 public class Servlet extends HttpServlet{
13     
14     private static final long serialVersionUID = 1L;
15 
16     @Override
17     protected void doGet(HttpServletRequest req, HttpServletResponse resp)
18             throws ServletException, IOException {
19         resp.getWriter().write("helloworld");
20     }
21 
22     @Override
23     protected void doPost(HttpServletRequest req, HttpServletResponse resp)
24             throws ServletException, IOException {
25         this.doGet(req, resp);
26     }
27     
28 }

这个就是Servlet注解的QuickStart(快速入门)