Spring Mvc 4 HelloWord

<?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_3_1.xsd"
    id="WebApp_ID" version="3.1">
    <!-- Spring跳转Servlet配置 -->
    <servlet>
        <servlet-name>springDispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>springDispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-4.2.xsd
    http://www.springframework.org/schema/mvc 
    http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd">
    <!-- 配置自动扫描的包 -->
    <context:component-scan base-package="com.sanchan.server.controller"></context:component-scan>
    <!-- 配置视图解析处理器：将Controller方法返回解析为实际的物理视图 -->
    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
</beans>

package com.sanchan.server.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

//表示该类为Spring的处理器，监听相关操作
@Controller
public class HelloWorld {
    /**
     * 1、用@RequestMapping来映射请求的URL
     * 2、返回值会通过视图解析器解析为实际的物理视图，对于org.springframework.web.servlet.view.
     * InternalResourceViewResolver视图解析器，会做如下解析：
     *  prefix【在springmvc.xml中配置的prefix值】+下面return返回的值+suffix【在springmvc.xml中配置的suffix值】
     * @return
     */
    @RequestMapping("/helloworld")
    public String hello() {
        System.out.print("hello world");
        return "success";
    }
}