Vincent

package  com.company.springaop.test; 

import  java.lang.reflect.Method; 
import  org.springframework.aop.MethodBeforeAdvice; 

public   class  TestBeforeAdvice  implements  MethodBeforeAdvice { 

   public   void  before(Method m, Object[] args, Object target) 
   throws  Throwable { 
    System.out.println( " Hello world! (by  "  
         +   this .getClass().getName() 
         +   " ) " ); 
  } 
} 

package  com.company.springaop.test; 

public   class  BeanImpl  implements  Bean { 

   public   void  theMethod() { 
    System.out.println( this .getClass().getName() 
         +   " . "   +   new  Exception().getStackTrace()[ 0 ].getMethodName() 
         +   " () "  
         +   "  says HELLO! " ); 
  } 
}

package  com.company.springaop.test; 

public   interface  Bean { 
   public   void  theMethod(); 
}

package  com.company.springaop.test; 

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

public   class  Main { 

   public   static   void  main(String[] args) { 
     // Read the configuration file 
    ApplicationContext ctx 
         =   new  FileSystemXmlApplicationContext( " springconfig.xml " ); 

     // Instantiate an object 
    Bean x  =  (Bean) ctx.getBean( " bean " ); 

     // Execute the public method of the bean (the test) 
    x.theMethod(); 
  } 
}

<? xml version = " 1.0 "  encoding = " UTF-8 " ?>  
<! DOCTYPE beans PUBLIC   " -//SPRING//DTD BEAN//EN "   " http://www.springframework.org/dtd/spring-beans.dtd " >  

< beans >  
   <!-- CONFIG -->  
   < bean id = " bean "   class = " org.springframework.aop.framework.ProxyFactoryBean " >  
     < property name = " proxyInterfaces " >  
       < value > com.company.springaop.test.Bean </ value >  
     </ property >  
     < property name = " target " >  
       < ref local = " beanTarget " />  
     </ property >  
     < property name = " interceptorNames " >  
       < list >  
         < value > theAdvisor </ value >  
       </ list >  
     </ property >  
   </ bean >  

   <!-- CLASS -->  
   < bean id = " beanTarget "   class = " com.company.springaop.test.BeanImpl " />  

   <!-- ADVISOR -->  
   <!-- Note: An advisor assembles pointcut and advice -->  
   < bean id = " theAdvisor "   class = " org.springframework.aop.support.RegexpMethodPointcutAdvisor " >  
     < property name = " advice " >  
       < ref local = " theBeforeAdvice " />  
     </ property >  
     < property name = " pattern " >  
       < value > com\.company\.springaop\.test\.Bean\.theMethod </ value >  
     </ property >  
   </ bean >  

   <!-- ADVICE -->  
   < bean id = " theBeforeAdvice "   class = " com.company.springaop.test.TestBeforeAdvice " />  
</ beans >