java错误-The prefix "aop" for element "aop:aspectj-autoproxy" is not bound.

配置springmvc的aop时出错：

当我向配置文件中添加：<aop:aspectj-autoproxy proxy-target-class="true"/> 时出错：

The prefix "aop" for element "aop:aspectj-autoproxy" is not bound.

org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 16 in XML document from class path resource [springmvc.xml] is invalid; nested exception is org.xml.sax.SAXParseException: The prefix "aop" for element "aop:aspectj-autoproxy" is not bound.

解决方法：

 

添加这些有关AOP的配置：

 xmlns:aop="http://www.springframework.org/schema/aop"

和
 http://www.springframework.org/schema/aop 
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd" 

 

添加后如下面所示：

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd 
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
 http://www.springframework.org/schema/aop 
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">