Spring AOP概念學習（三）-自動代理

    上一篇文章是Spring AOP的單獨代理，這一篇是關於Spring AOP的自動代理。其中的原理沒必要多說，Spring AOP可以通過兩種方式實現自動代理。下面就是分別介紹這兩種方式。

    1、使用 BeanNameAutoProxyCreator

         1）首先創建Bean類

 

package com.javaeye.sunjiesh.proxy.auto;

public class HelloBeanA {

	public void testHelloBeanA(){
		System.out.println(this.getClass().getName()+" is running");
	}
}

 

package com.javaeye.sunjiesh.proxy.auto;

public class HelloBeanB {

	public void testHelloBeanB(){
		System.out.println(this.getClass().getName()+" is running");
	}
}

 

         2）創建Advice類

 

package com.javaeye.sunjiesh.aop;

import java.lang.reflect.Method;

import org.springframework.aop.AfterReturningAdvice;

public class AfterAdviceBean implements AfterReturningAdvice{

	public AfterAdviceBean() {
		// TODO Auto-generated constructor stub
	}

	@Override
	public void afterReturning(Object returnValue, Method method,
			Object[] args, Object target) throws Throwable {
		// TODO Auto-generated method stub
		System.out.println("afterReturning is running");
	}

}

 

package com.javaeye.sunjiesh.aop;

import java.lang.reflect.Method;

import org.springframework.aop.MethodBeforeAdvice;

public class BeforeAdviceBean implements MethodBeforeAdvice{

	public BeforeAdviceBean() {
		// TODO Auto-generated constructor stub
	}

	@Override
	public void before(Method method, Object[] args, Object target)
			throws Throwable {
		// TODO Auto-generated method stub
		System.out.println("before is running");
	}

}

 

         3）創建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:context="http://www.springframework.org/schema/context"
	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/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
				http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
	<bean id="helloBeanA" class="com.javaeye.sunjiesh.proxy.auto.HelloBeanA"></bean>
	<bean id="helloBeanB" class="com.javaeye.sunjiesh.proxy.auto.HelloBeanB"></bean>
	<bean id="beforeAdvice" class="com.javaeye.sunjiesh.aop.BeforeAdviceBean"></bean>
	<bean id="afterAdvice" class="com.javaeye.sunjiesh.aop.AfterAdviceBean"></bean>
	
	<!-- 在此進行自動代理配置 -->
	<bean id="beanNameAutoProxyCreator"
		class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
		<property name="beanNames">
			<list>
				<value>helloBean*</value>
			</list>
		</property>
		<property name="interceptorNames">
			<list>
				<value>beforeAdvice</value>
				<value>afterAdvice</value>
			</list>
		</property>
	</bean>
</beans>

 

         4）創建測試類

 

package com.javaeye.sunjiesh.proxy.auto;

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

public class SpringAopMain {

	public SpringAopMain() {
		// TODO Auto-generated constructor stub
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		ApplicationContext ctx = new ClassPathXmlApplicationContext(
				"spring-beans3.xml");
		HelloBeanA h1 = (HelloBeanA) ctx.getBean("helloBeanA");
		h1.testHelloBeanA();
		HelloBeanB h2 = (HelloBeanB) ctx.getBean("helloBeanB");
		h2.testHelloBeanB();
	}

}

 

         5）輸出

 

before is running
com.javaeye.sunjiesh.proxy.auto.HelloBeanA is running
afterReturning is running
before is running
com.javaeye.sunjiesh.proxy.auto.HelloBeanB is running
afterReturning is running

 

    2、使用 DefaultAdvisorAutoProxyCreator

        只要修改xml配置文件就可以了

 

<?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: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/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
				http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
	<bean id="helloBeanA" class="com.javaeye.sunjiesh.proxy.auto.HelloBeanA"></bean>
	<bean id="helloBeanB" class="com.javaeye.sunjiesh.proxy.auto.HelloBeanB"></bean>
	<bean id="beforeAdvice" class="com.javaeye.sunjiesh.aop.BeforeAdviceBean"></bean>
	<bean id="afterAdvice" class="com.javaeye.sunjiesh.aop.AfterAdviceBean"></bean>
	
	<!-- 在此進行自動代理配置 -->
	<bean
		class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator" />
	<bean id="nameMatchMethodPointcutAdvisor"
		class="org.springframework.aop.support.NameMatchMethodPointcutAdvisor">
		<property name="advice" ref="beforeAdvice" />
		<property name="mappedNames">
			<list>
				<value>test*</value>
			</list>
		</property>
	</bean>
</beans>