怎么将注解设置成@WebServlet(name= "IndexServlet")

package com.rupeng.servlet;

import java.io.IOException;

**_@javax.servlet.annotation.WebServlet(name= "IndexServlet")_
public class IndexServlet extends javax.servlet.http.HttpServlet {
*_
protected void doPost(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) throws javax.servlet.ServletException, IOException {

}

protected void doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) throws javax.servlet.ServletException, IOException {

}

}

引入相关的包后,直接用注解就可以了呀。