一个最简单 Servlet 3.0 规范的示例 MyServlet.java，,package demo

一个最简单 Servlet 3.0 规范的示例 MyServlet.java，,package demo

package demo.servlet3;import java.io.IOException;import javax.servlet.ServletException;import javax.servlet.annotation.*;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;@WebServlet(    urlPatterns={"/demo"},    asyncSupported = true,    initParams ={@WebInitParam(name="lang", value="english")})public class MyServlet extends HttpServlet {    @Override    public void init() throws ServletException {        super.init();        System.out.println(this.getInitParameter("lang"));    }    @Override    public void doGet(HttpServletRequest req,HttpServletResponse res) {        System.out.println("servlet+"+this);        try {            res.getWriter().print("Hello Servlet 3.0");        } catch (IOException e) {            e.printStackTrace();        }    }}//该片段来自于http://byrx.net