public interface IHello {

   public void sayHello(String str);

}

public class Hello implements IHello {

    @Override

    public void sayHello(String str) {

    	System.out.println("你好"+str);

    }

}

public class SayBeforeAdvice implements MethodBeforeAdvice {

	@Override

	public void before(Method arg0, Object[] arg1, Object arg2) throws Throwable {

		// TODO Auto-generated method stub

       System.out.println("在方法执行前做事情！");

	}

}

public class SayAfterAdvice implements AfterReturningAdvice {

	@Override

	public void afterReturning(Object arg0, Method arg1, Object[] arg2, Object arg3) throws Throwable {

		// TODO Auto-generated method stub

	    System.out.println("在方法执行后做事情！");

	}

}

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN"

"http://www.springframework.org/dtd/spring-beans-2.0.dtd">

<beans>

    <!-- 建立目标对象实例 -->

	<bean id="bean_hello" class="com.pb.Hello" />

	<!-- 创建执行前advice实例 -->

	<bean id="sba" class="com.pb.SayBeforeAdvice" />

	<!-- 创建执行后advice实例 -->

	<bean id="sfa" class="com.pb.SayAfterAdvice" />

	<!-- 建立代理对象 -->

	<bean id="helloProxy" class="org.springframework.aop.framework.ProxyFactoryBean">

	    <!-- 设置代理的接口 -->

	    <property name="proxyInterfaces">

			<value>com.pb.IHello</value>

		</property>

		<!-- 设置目标对象实例 -->

		<property name="target">

			<ref bean="bean_hello"/>

		</property>

		<!-- 设置Advice实例 -->

		<property name="interceptorNames">

			<list>

			 	<value>sba</value>

			 	<value>sfa</value>

			</list>

		</property>

	</bean>

</beans>

public static void main(String[] args) {

		// TODO Auto-generated method stub

	    ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml");

	    IHello hello=(IHello)context.getBean("helloProxy");

	    hello.sayHello("访客");

	}