spring aop实例

1.AdviceMethods.java

package com.bijian.study.spring.aop.schema;

public class AdviceMethods {

	public void preGreeting() {
		System.out.println("--how are you!--");
	}
}

2.beans.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:aop="http://www.springframework.org/schema/aop"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
				http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
				http://www.springframework.org/schema/aop
				http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">

	<aop:config proxy-target-class="true">
		<aop:aspect ref="adviceMethods">
			<!-- 配置指定的一个类 -->
			<!--  
			<aop:before pointcut="target(com.baobaotao.NaiveWaiter) or target(com.baobaotao.NaughtyWaiter) and execution(* greetTo(..))" method="preGreeting"/>
			-->
			
			<!-- 配置指定的多个类 -->
			<!-- 
			<aop:before pointcut="target(com.baobaotao.NaiveWaiter) or target(com.baobaotao.NaughtyWaiter) and execution(* greetTo(..))" method="preGreeting"/>
			-->
			
			<!-- 配置指定的接口，此接口的所有实现类都被切面化了 -->
			<aop:before pointcut="target(com.bijian.study.spring.aop.Waiter) and execution(* greetTo(..))" method="preGreeting"/>
		</aop:aspect>
	</aop:config>  
	<bean id="adviceMethods" class="com.bijian.study.spring.aop.schema.AdviceMethods"/>
	<bean id="naiveWaiter" class="com.bijian.study.spring.aop.NaiveWaiter"/>
	<bean id="naughtyWaiter" class="com.bijian.study.spring.aop.NaughtyWaiter"/>
</beans>

3.Waiter接口

package com.bijian.study.spring.aop;

public interface Waiter {

	public void greetTo(String name);
}

4.NaiveWaiter.java

package com.bijian.study.spring.aop;

public class NaiveWaiter implements Waiter{

	@Override
	public void greetTo(String name) {
		System.out.println("NavieWaiter:greet to " + name);
	}
}

5.NaughtyWaiter.java

package com.bijian.study.spring.aop;

public class NaughtyWaiter implements Waiter{

	@Override
	public void greetTo(String name) {
		System.out.println("NaughtyWaiter:greet to " + name);
	}
}

6.测试类Test.java

package com.bijian.study.spring.aop.schema;

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

import com.bijian.study.spring.aop.Waiter;

public class Test {

	public static void main(String[] args) {
		
		String configPath = "com/bijian/study/spring/aop/schema/beans.xml";

		ApplicationContext ctx = new ClassPathXmlApplicationContext(configPath);

		Waiter naiveWaiter = (Waiter)ctx.getBean("naiveWaiter");
		Waiter naughtyWaiter = (Waiter)ctx.getBean("naughtyWaiter");
		naiveWaiter.greetTo("John");
		naughtyWaiter.greetTo("Tom");
	}
}

运行结果：

--how are you!--
NavieWaiter:greet to John
--how are you!--
NaughtyWaiter:greet to Tom