Public interface Sleepable

{

voidsleep(); 

}
然后写一个Human类，他实现了这个接口

publicHuman implements Sleepable{

public void sleep()

{      System.out.println("睡觉中...！");   }

}

Public class Sleep Helper implements MethodBeforeAdvice,AfterReturningAdvice  {

publicvoidbefore(Method method, Object[] arguments, Object target)throws

Throwable {

  System.out.println("睡觉前");

}

publicvoidafterReturning(Object rturnValue, Method method, Object[] arguments, Object target)throwsThrowable {

     System.out.println("睡觉后");

}

}

<bean id="Human"class="cn.happy.dao.Human"></bean>

<bean id="SleepHelper"class="cn.happy.aop.SleepHelper"></bean>//定义切点的常用的两种方式：1)使用正则表达式 2)使用AspectJ表达式，//这里用正则表达式<!-- 顾问 -->   
  <bean id="BeforAdvisor"class="org.springframework.aop.support.RegexpMethodPointcutAdvisor">              
<property name="advice" ref="BeforAdvice"></property>       <property name="pattern" value=".*l.*g.*">
</property>    
   </bean><!-- 代理对象 -->//ProxyFactoryBean是一个代理，我们可以把它转换为//proxyInterfaces中指定的实现该interface的代理对象
<bean id="serviceProxy"class="org.springframework.aop.framework.ProxyFactoryBean">             
 <property name="target" ref="Human"></property>    
   <property name="interceptorNames" value="BeforAdvisor">
</property>       

</bean>代理类

publicclassStuTest {publicstaticvoidmain(String[] args) 
{//通过ClassPathXmlApplicationContext实例化Spring的上下文
ApplicationContext context=newClassPathXmlApplicationContext("applicationContext.xml");
//通过ApplicationContext的getBean()方法，根据id来获取Bean的实例
Sleepable s=(Sleepable)context.getBean("Human"); 
       s.sleep();  
  }
}