用xml配置的方式进行SpringAOP开发

 1.先定义一个简单接口：

package org.pan.service;

public interface PersonService {
	
	public void save();
	
	public void update();
	
	public void delete();

}

2.实现这个接口：

package org.pan.service.impl;

import org.pan.service.PersonService;

public class PersonServiceBean implements PersonService{

	@Override
	public void delete() {
		System.out.println("调用delete方法");
	}

	@Override
	public void save() {
		System.out.println("调用save方法");	
	}

	@Override
	public void update() {
		System.out.println("调用update方法");	
	}

}

 3.定义一个普通的java类，这个类将作为拦截类：

package org.pan.aop;

public class MyInterceptor {
	
	public void doAccessMethod(){
		System.out.println("前置通知！");
	}
	
	public void afterMethod(){
		System.out.println("后置通知！");
	}
	
	public void afterException(){
		System.out.println("后置例外通知！");
	}
	
	public void around(){
		System.out.println("环绕通知！");
	}

}

 4.这是spring的xml配置文件：

<?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:p="http://www.springframework.org/schema/p"
	xmlns:aop="http://www.springframework.org/schema/aop" 
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
	http://www.springframework.org/schema/beans/spring-beans-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/tx 
	http://www.springframework.org/schema/tx/spring-tx-2.5.xsd ">
	
	<aop:aspectj-autoproxy />
	
	<bean id="personService" class="org.pan.service.impl.PersonServiceBean" />
	
	<bean id="myInterceptor" class="org.pan.aop.MyInterceptor"/>
	
	<aop:config>
		<aop:aspect id="asp" ref="myInterceptor">
			<aop:pointcut id="personPointCut" expression="execution(* org.pan.service.impl.PersonServiceBean.*(..))"/>
			<aop:before method="doAccessMethod" pointcut-ref="personPointCut"/>
			<aop:after-returning method="afterMethod" pointcut-ref="personPointCut"/>
			<aop:after-throwing method="afterException" pointcut-ref="personPointCut"/>
		</aop:aspect>
	</aop:config>
	
</beans>

 这就是一个简单的实例了，现在来个单元测试一下：

package junit.test;

import org.junit.BeforeClass;
import org.junit.Test;
import org.pan.service.PersonService;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class SpringAopTest {

	@BeforeClass
	public static void setUpBeforeClass() throws Exception {
	}
	@Test public void interceptorTest(){
		ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContext.xml");
		PersonService personService=(PersonService)ctx.getBean("personService");
		personService.save();
	}
}

 运行后便会在控制台输出以下信息了：

前置通知！
调用save方法
后置通知！