Spring 基于基于XML配置方式实现AOP

要进行AOP编程，首先我们要在spring的配置文件中引入aop命名空间：

<?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:context="http://www.springframework.org/schema/context" 
	xmlns:aop="http://www.springframework.org/schema/aop"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
         http://www.springframework.org/schema/context 
         http://www.springframework.org/schema/context/spring-context-2.5.xsd   
         http://www.springframework.org/schema/aop 
         http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">

</beans>  

 

PersonService接口

package org.spring.service;

public interface PersonService {
	public void save(String name);

	public void update(String name, Integer id);

	public String getPersonName(Integer id);
}

 

PersonService的实现类PersonServiceBean

package org.spring.service.impl;

import org.spring.service.PersonService;

public class PersonServiceBean implements PersonService {
	public String getPersonName(Integer id) {
		System.out.println("我是getPersonName()方法");
		return "xxx";
	}

	public void save(String name) {
		System.out.println("我是save()方法");
	}

	public void update(String name, Integer id) {
		System.out.println("我是update()方法");
	}

}

 

切面

package org.spring.service;

import org.aspectj.lang.ProceedingJoinPoint;

public class MyInterceptor {
	public void doAccessCheck() {
		System.out.println("前置通知");
	}

	public void doAfterReturning() {
		System.out.println("后置通知");
	}

	public void doAfter() {
		System.out.println("最终通知");
	}

	public void doAfterThrowing() {
		System.out.println("例外通知");
	}

	public Object doBasicProfiling(ProceedingJoinPoint pjp) throws Throwable {
		System.out.println("进入方法");
		Object result = pjp.proceed();
		System.out.println("退出方法");
		return result;
	}
}

 

我们还需要把PersonServiceBean与MyInterceptor交于Spring容器管理，此外我们还需在配置中对切面进行配置，如下

<?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:context="http://www.springframework.org/schema/context" 
	xmlns:aop="http://www.springframework.org/schema/aop"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
         http://www.springframework.org/schema/context 
         http://www.springframework.org/schema/context/spring-context-2.5.xsd   
         http://www.springframework.org/schema/aop 
         http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">

	<bean id="personServiceBean" class="org.spring.service.impl.PersonServiceBean" />
	<bean id="myInterceptor" class="org.spring.service.MyInterceptor" />

	<aop:config>
		<aop:aspect id="asp" ref="myInterceptor">
			<aop:pointcut id="mycut" expression="execution(* org.spring.service..*.*(..))" />
			<aop:before pointcut-ref="mycut" method="doAccessCheck" />
			<aop:after-returning pointcut-ref="mycut" method="doAfterReturning" />
			<aop:after-throwing pointcut-ref="mycut" method="doAfterThrowing" />
			<aop:after pointcut-ref="mycut" method="doAfter" />
			<aop:around pointcut-ref="mycut" method="doBasicProfiling" />
		</aop:aspect>
	</aop:config>
</beans>  

 

测试类

package org.spring.junit;

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

public class SpringTest {
	@Test
	public void test() {
		ApplicationContext ctx = new ClassPathXmlApplicationContext(
				"spring.xml");

		PersonService personService = (PersonService) ctx
				.getBean("personServiceBean");
		
		personService.save("xxx");
	}
}

 

控制台打印结果为：

前置通知
进入方法
我是save()方法
后置通知
最终通知
退出方法