对于 Servlet使用注解后网页无法找到

 对于 Servlet使用注解后网页无法找到：

Servlet3.0相较于Servlet2.5： 目前快捷开发，主流使用注解技术
3.0注解简化的javaweb代码开发，可以省略web.xml配置文件 
支持异步处理（多线程技术） 
支持可插性特性（书写的代码编译后生成的class文件可以直接部署到其他项目的，自动加载执行）

将：

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

@WebServlet(name = "/ServletWebDome")
public class ServletWebDome extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doGet(request, response);
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        System.out.println("-----Hello four servlet-----");
    }
}

改为：

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

@WebServlet("/ServletWebDome")
public class ServletWebDome extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doGet(request, response);
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        System.out.println("-----Hello four servlet-----");
    }
}

就OK了；