启动服务器，为什么没有调用初始化方法？

问题1：新建web项目，web.xml中没有自动配置映射，然后自己手动配置的。

问题2：启动服务器，没有调用初始化方法。

截图如下：

package com.imooc.servelet;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

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 com.imooc.domain.User;

public class InitServelet extends HttpServlet {
    @Override
    public void init() throws ServletException {

        List<User> list = new ArrayList<User>();
        this.getServletContext().setAttribute("list", list);
        System.out.println("初始化");
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        response.getWriter().append("Served at: ").append(request.getContextPath());
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        doGet(request, response);
    }

}

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd" id="WebApp_ID" version="4.0">
  <display-name>reg-login</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  <servlet>
  <servlet-name> InitServlet</servlet-name>
  <servlet-class>com.imooc.servelet.InitServlet</servlet-class>
  <load-on-startup>2 </load-on-startup>
  </servlet>
  <servlet-mapping>
  <servlet-name> InitServlet</servlet-name>
  <url-pattern>/InitServlet</url-pattern>
  </servlet-mapping>
</web-app>