<?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.xsd

    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd

    http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <mvc:annotation-driven />

    <context:component-scan base-package="com.exyong" />

</beans>

注意配置中的拼写错误，我在配置的时候 <beans xmlns   漏了个s （xmln）导致一直报 “cvc-elt.1: 找不到元素 'beans' 的声明”

注意  <mvc:annotation-driven />配置的base-package 的值为放置Controller的包名，否则报 “No mapping found for HTTP request with URI“