spring 组件扫描和切面配置

applicationContext-aop.xml

    <!-- 自动扫描的包 -->
    <context:component-scan base-package="com.atguigu.spring.aop"></context:component-scan>

    <!-- 使 AspectJ 的注解起作用 -->
    <aop:aspectj-autoproxy></aop:aspectj-autoproxy>

applicationContext-xml.xml

<?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: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/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd">

    <!-- 配置 bean -->
    <bean id="arithmeticCalculator" 
        class="com.atguigu.spring.aop.xml.ArithmeticCalculatorImpl"></bean>

    <!-- 配置切面的 bean. -->
    <bean id="loggingAspect"
        class="com.atguigu.spring.aop.xml.LoggingAspect"></bean>

    <bean id="vlidationAspect"
        class="com.atguigu.spring.aop.xml.VlidationAspect"></bean>

    <!-- 配置 AOP -->
    <aop:config>
        <!-- 配置切点表达式 -->
        <aop:pointcut expression="execution(* com.atguigu.spring.aop.xml.ArithmeticCalculator.*(int, int))" 
            id="pointcut"/>
        <!-- 配置切面及通知 -->
        <aop:aspect ref="loggingAspect" order="2">
            <aop:before method="beforeMethod" pointcut-ref="pointcut"/>
            <aop:after method="afterMethod" pointcut-ref="pointcut"/>
            <aop:after-throwing method="afterThrowing" pointcut-ref="pointcut" throwing="e"/>
            <aop:after-returning method="afterReturning" pointcut-ref="pointcut" returning="result"/>
            <!--  
            <aop:around method="aroundMethod" pointcut-ref="pointcut"/>
            -->
        </aop:aspect>    
        <aop:aspect ref="vlidationAspect" order="1">
            <aop:before method="validateArgs" pointcut-ref="pointcut"/>
        </aop:aspect>
    </aop:config>

</beans>