aop命名空間問題

<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:aop="http://www.springframework.org/schema/aop"
   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/aop
       http://http://www.springframework.org/schema/aop/spring-aop.xsd">
<aop:aspectj-autoproxy proxy-target-class="true"/>
<context:component-scan base-package="com" />

</beans>

Caused by: org.xml.sax.SAXParseException; lineNumber: 20; columnNumber: 55; cvc-complex-type.2.4.c: 通配符的匹配很全面, 但無法找到元素 'aop:aspectj-autoproxy' 的聲明。

明明已經(jīng)加了全部內(nèi)容但是還是報(bào)錯(cuò)求大佬指點(diǎn)