spring学习笔记（22）----基于配置文件的方式来配置AOP

一个配置例子

<?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>