Spring 使用AspectJ来配置AOP

在Application_context中引入名称空间，例子：<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:aop="http://www.springframework.org/schema/aop"
    xmlns:lang="http://www.springframework.org/schema/lang"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
     http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
     http://www.springframework.org/schema/lang
     http://www.springframework.org/schema/lang/spring-lang-2.5.xsd
     http://www.springframework.org/schema/aop
     http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
     http://www.springframework.org/schema/context
     http://www.springframework.org/schema/context/spring-context-2.5.xsd">
  <context:component-scan base-package="bean"/>
  <aop:aspectj-autoproxy/>
</beans>