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

package com.xiaou;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet(name="servlet1",urlPatterns="/helloworld")
public class Servlet extends HttpServlet{
    
    private static final long serialVersionUID = 1L;

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        resp.getWriter().write("helloworld");
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        this.doGet(req, resp);
    }
    
}

这个就是Servlet注解的QuickStart(快速入门)