applicationContext.xml配置AOP切面编程

Computer.java

package com.wh.aop2;

public class Computer {

	public void play01(){
		System.out.println("一号玩家！");
	}
	public void play02(){
		System.out.println("二号玩家！");
		System.out.println(10/0);
	}
	public void play03(){
		System.out.println("三号玩家！");
	}
	public void play04(){
		System.out.println("四号玩家！");
	}
	public void play05(){
		System.out.println("五号玩家！");
	}
	public void play06(){
		System.out.println("六号玩家！");
	}
}

AopProxy.java

package com.wh.aop2;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;

public class AopProxy {

	public void doBefore01() {
		System.out.println("无参数前置通知：");
	}

	public void doBefore02() {
		System.out.println("有参数前置通知：");
	}

	public void doAround(ProceedingJoinPoint p) {
		System.out.println("环绕之前置通知：");
		Object obj = null;
		try {
			obj = p.proceed();
			System.out.println("环绕之后置通知：   " + obj);
		}
		catch (Throwable e) {
			System.out.println("环绕之异常通知：   " + e.getMessage());
		}
		finally {
			System.out.println("环绕之最终通知：");
		}
	}
}

applicationContext.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:mvc="http://www.springframework.org/schema/mvc"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:c="http://www.springframework.org/schema/c"
	xmlns:cache="http://www.springframework.org/schema/cache"
	xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
		http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-4.0.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd">

	<bean id="computer" class="com.wh.aop.Computer"/>
	<bean id="testBefore" class="com.wh.aop.TestBefore"/>

	<aop:config>
		<aop:pointcut expression="execution(* com.wh.aop.Computer.add(*,*))" id="computerAddCut"/>
		<aop:pointcut expression="execution(* com.wh.aop.Computer.div(*,*))" id="computerDivCut"/>
		<!-- AOP前置通知 -->
		<aop:aspect ref="testBefore">
			<aop:before method="doBefore" pointcut-ref="computerAddCut"/>
		</aop:aspect>
		<!-- AOP后置通知 -->
		<aop:aspect ref="testBefore">
				<aop:after-returning method="doAfter" pointcut-ref="computerAddCut" returning="ret"/>
		</aop:aspect>
		<!-- AOP异常通知 -->
		<aop:aspect ref="testBefore">
			<aop:after-throwing method="doThrow" pointcut-ref="computerDivCut" throwing="e"/>
		</aop:aspect>
	</aop:config>	

	<import resource="applicationContext2.xml"/>

</beans>

applicationContext2.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:mvc="http://www.springframework.org/schema/mvc"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:c="http://www.springframework.org/schema/c"
	xmlns:cache="http://www.springframework.org/schema/cache"
	xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
		http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-4.0.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd">

	<bean id="computer2" class="com.wh.aop2.Computer"/>
	<bean id="aopProxy2" class="com.wh.aop2.AopProxy"/>
	<aop:config>
		<aop:pointcut expression="execution(* com.wh.aop2.Computer.*(..))" id="computerCut2"/>
		<aop:aspect ref="aopProxy2">
			<aop:around method="doAround" pointcut-ref="computerCut2"/>
		</aop:aspect>
	</aop:config>

</beans>

TestAop.java

package com.wh.aop2;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestAop {

	@Test
	public void test01(){
		ApplicationContext ac=new ClassPathXmlApplicationContext("applicationContext.xml");
		Computer c=(Computer)ac.getBean("computer2");
		c.play01();
	}

	@Test
	public void testAround(){
		ApplicationContext ac=new ClassPathXmlApplicationContext("applicationContext.xml");
		Computer c=(Computer)ac.getBean("computer2");
		c.play01();
	}
	/**
		 环绕之前置通知：
		一号玩家！
		环绕之后置通知：   null
		环绕之最终通知：
	 */

	@Test
	public void testAround2(){
		ApplicationContext ac=new ClassPathXmlApplicationContext("applicationContext.xml");
		Computer c=(Computer)ac.getBean("computer2");
		c.play02();
	}
	/**
		环绕之前置通知：
		二号玩家！
		环绕之异常通知：   / by zero
		环绕之最终通知：
	 */
	//小结：在环绕通知中：正常情况下，四个通知都会出现，若出现异常，只有后置通知不会出现！
	//通知顺序为:前置、异常、最终、后置
}