Spring AOP 中 advice 的四种类型 before after throwing advice around

Posted 抹茶MM

tags:

篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了Spring AOP 中 advice 的四种类型 before after throwing advice around相关的知识，希望对你有一定的参考价值。

spring  AOP(Aspect-oriented programming) 是用于切面编程，简单的来说：AOP相当于一个拦截器，去拦截一些处理，例如：当一个方法执行的时候，Spring 能够拦截正在执行的方法，在方法执行的前或者后增加额外的功能和处理。

 

在Spring AOP中支持4中类型的通知：

1：before advice 在方法执行前执行。

2：after  returning  advice 在方法执行后返回一个结果后执行。

3：after  throwing advice 在方法执行过程中抛出异常的时候执行。

4：Around  advice 在方法执行前后和抛出异常时执行，相当于综合了以上三种通知。

 

下面是一个简单的AOP  advice 的例子：

 首先给出一个简单的Spring 注入的例子，

定义一个Book类：

 

[java] view plain copy print?
  1. package com.myapp.core.aop.advice;  
  2.   
  3. public class Book {  
  4.    private  String  name;  
  5.    private  String  url;  
  6.    private   int    pages;  
  7.      
  8.     public String getName() {  
  9.         return name;  
  10.     }  
  11.     public void setName(String name) {  
  12.         this.name = name;  
  13.     }  
  14.     public String getUrl() {  
  15.         return url;  
  16.     }  
  17.     public void setUrl(String url) {  
  18.         this.url = url;  
  19.     }  
  20.     public int getPages() {  
  21.         return pages;  
  22.     }  
  23.     public void setPages(int pages) {  
  24.         this.pages = pages;  
  25.     }  
  26.   
  27.   
  28.     public  void  printName(){  
  29.         System.out.println("Book name "+ this.name);  
  30.     }  
  31.       
  32.     public  void  printUrl(){  
  33.         System.out.println("Book URL "+this.url);  
  34.     }  
  35.       
  36.     public  void  printThrowException(){  
  37.         throw  new  IllegalArgumentException();  
  38.     }  
  39.      
  40. }  
package com.myapp.core.aop.advice;

public class Book {
   private  String  name;
   private  String  url;
   private   int    pages;
   
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getUrl() {
		return url;
	}
	public void setUrl(String url) {
		this.url = url;
	}
	public int getPages() {
		return pages;
	}
	public void setPages(int pages) {
		this.pages = pages;
	}


	public  void  printName(){
		System.out.println("Book name "+ this.name);
	}
	
	public  void  printUrl(){
		System.out.println("Book URL "+this.url);
	}
	
	public  void  printThrowException(){
		throw  new  IllegalArgumentException();
	}
   
}

相应的配置文件：

 

 

[html] view plain copy print?
  1. <?xml version="1.0" encoding="UTF-8"?>  
  2. <beans xmlns="http://www.springframework.org/schema/beans"  
  3.        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  4.        xsi:schemaLocation="http://www.springframework.org/schema/beans  
  5.            http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">  
  6.   
  7.   <!-- more bean definitions for data access objects go here -->  
  8.      
  9.     <bean id="book" class="com.myapp.core.aop.advice.Book">  
  10.         <property name="name" value="Effective java" />  
  11.         <property name="url" value="www.google.cn"/>  
  12.         <property name="pages" value="300" />  
  13.     </bean>  
  14. </beans>  
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

  <!-- more bean definitions for data access objects go here -->
   
    <bean id="book" class="com.myapp.core.aop.advice.Book">
	    <property name="name" value="Effective java" />
	    <property name="url" value="www.google.cn"/>
	    <property name="pages" value="300" />
    </bean>
</beans>

对应的测试类：

 

 

[java] view plain copy print?
  1. package com.myapp.core.aop.advice;  
  2.   
  3. import org.springframework.context.ApplicationContext;  
  4. import org.springframework.context.support.ClassPathXmlApplicationContext;  
  5.   
  6. public class MainTest {  
  7.    public static void main(String[] args) {  
  8.         
  9.        ApplicationContext  context  = new  ClassPathXmlApplicationContext("resource/aop.xml");  
  10.          
  11.        Book   book  =   (Book) context.getBean("book");  
  12.          
  13.        System.out.println("---------------------");  
  14.          
  15.        book.printName();  
  16.          
  17.        System.out.println("---------------------");  
  18.          
  19.        book.printUrl();  
  20.          
  21.        System.out.println("----------------------");  
  22.          
  23.        try{  
  24.              
  25.           book.printThrowException();  
  26.              
  27.        }catch(Exception e){  
  28.          //  e.printStackTrace();  
  29.        }  
  30.          
  31.          
  32. }  
  33. }  
package com.myapp.core.aop.advice;

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

public class MainTest {
   public static void main(String[] args) {
	  
	   ApplicationContext  context  = new  ClassPathXmlApplicationContext("resource/aop.xml");
	   
	   Book   book  =   (Book) context.getBean("book");
	   
	   System.out.println("---------------------");
       
	   book.printName();
	   
	   System.out.println("---------------------");
	   
	   book.printUrl();
	   
	   System.out.println("----------------------");
	   
	   try{
		   
		  book.printThrowException();
		   
	   }catch(Exception e){
		 //  e.printStackTrace();
	   }
	   
	   
}
}

输出结果：

 

 

[plain] view plain copy print?
  1. 三月 20, 2013 11:01:01 上午 org.springframework.context.support.AbstractApplicationContext prepareRefresh  
  2. INFO: Refreshing org[email protected]11e831: startup date [Wed Mar 20 11:01:01 CST 2013]; root of context hierarchy  
  3. 三月 20, 2013 11:01:01 上午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions  
  4. INFO: Loading XML bean definitions from class path resource [resource/aop.xml]  
  5. 三月 20, 2013 11:01:01 上午 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons  
  6. INFO: Pre-instantiating singletons in org.s[email protected]13b5500: defining beans [book]; root of factory hierarchy  
  7. ---------------------  
  8. Book name Effective java  
  9. ---------------------  
  10. Book URL www.google.cn  
  11. ----------------------  
三月 20, 2013 11:01:01 上午 org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.[email protected]: startup date [Wed Mar 20 11:01:01 CST 2013]; root of context hierarchy
三月 20, 2013 11:01:01 上午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [resource/aop.xml]
三月 20, 2013 11:01:01 上午 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
INFO: Pre-instantiating singletons in org.s[email protected]13b5500: defining beans [book]; root of factory hierarchy
---------------------
Book name Effective java
---------------------
Book URL www.google.cn
----------------------

 

下面对以上的Book加上Spring   AOP   advices

1：before  advice

before advice将在方法执行前执行，创建一个实现MethodBeforeAdvice接口的类能够定义执行方法前的操作。
类如下：
[java] view plain copy print?
  1. package com.myapp.core.aop.advice;  
  2.   
  3. import java.lang.reflect.Method;  
  4.   
  5. import org.springframework.aop.MethodBeforeAdvice;  
  6.   
  7. public class BeforeMethod  implements MethodBeforeAdvice {  
  8.   
  9.     @Override  
  10.     public void before(Method arg0, Object[] arg1, Object arg2)  
  11.             throws Throwable {  
  12.         // TODO Auto-generated method stub  
  13.           
  14.         System.out.println("Before  Method");  
  15.         System.out.println("--------------------");  
  16.           
  17.     }  
  18.    
  19. }  
package com.myapp.core.aop.advice;

import java.lang.reflect.Method;

import org.springframework.aop.MethodBeforeAdvice;

public class BeforeMethod  implements MethodBeforeAdvice {

	@Override
	public void before(Method arg0, Object[] arg1, Object arg2)
			throws Throwable {
		// TODO Auto-generated method stub
		
		System.out.println("Before  Method");
		System.out.println("--------------------");
		
	}
 
}
配置对应的bean：
在aop.xml中配置，创建一个BeforeMethod类，一个新的代理命名为：bookProxy
1： target 设置你想拦截的bean
2：interceptorNames设置通知，你想作用于proxy/target上的
对应的配置文件如下：
[html] view plain copy print?
  1. <?xml version="1.0" encoding="UTF-8"?>  
  2. <beans xmlns="http://www.springframework.org/schema/beans"  
  3.        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  4.        xsi:schemaLocation="http://www.springframework.org/schema/beans  
  5.            http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">  
  6.   
  7.   <!-- more bean definitions for data access objects go here -->  
  8.      
  9.     <bean id="book" class="com.myapp.core.aop.advice.Book">  
  10.         <property name="name" value="Effective java" />  
  11.         <property name="url" value="www.google.cn"/>  
  12.         <property name="pages" value="300" />  
  13.     </bean>  
  14.       
  15.     <bean id="beforeMethodBean" class="com.myapp.core.aop.advice.BeforeMethod" />  
  16.       
  17.     <bean id="bookProxy" class="org.springframework.aop.framework.ProxyFactoryBean">  
  18.        
  19.      <property name="target" ref="book"/>  
  20.        
  21.      <property name="interceptorNames">  
  22.        <list>  
  23.         <value>beforeMethodBean</value>  
  24.        </list>  
  25.      </property>  
  26.       
  27.      </bean>  
  28. </beans>  
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

  <!-- more bean definitions for data access objects go here -->
   
    <bean id="book" class="com.myapp.core.aop.advice.Book">
	    <property name="name" value="Effective java" />
	    <property name="url" value="www.google.cn"/>
	    <property name="pages" value="300" />
    </bean>
    
    <bean id="beforeMethodBean" class="com.myapp.core.aop.advice.BeforeMethod" />
    
    <bean id="bookProxy" class="org.springframework.aop.framework.ProxyFactoryBean">
     
     <property name="target" ref="book"/>
     
     <property name="interceptorNames">
       <list>
        <value>beforeMethodBean</value>
       </list>
     </property>
    
     </bean>
</beans>
注意：为了使用proxy（代理）我们需要引入 CGLIB2， pom.xml文件中注入如下：
[html] view plain copy print?
  1. <dependency>  
  2.     <groupId>cglib</groupId>  
  3.     <artifactId>cglib</artifactId>  
  4.     <version>2.2.2</version>  
  5. </dependency>  
	<dependency>
		<groupId>cglib</groupId>
		<artifactId>cglib</artifactId>
		<version>2.2.2</version>
	</dependency>
运行测试类：
[java] view plain copy print?
  1. package com.myapp.core.aop.advice;  
  2.   
  3. import org.springframework.context.ApplicationContext;  
  4. import org.springframework.context.support.ClassPathXmlApplicationContext;  
  5.   
  6. public class MainTest {  
  7.    public static void main(String[] args) {  
  8.         
  9.        ApplicationContext  context  = new  ClassPathXmlApplicationContext("resource/aop.xml");  
  10.          
  11.        Book   book  =   (Book) context.getBean("bookProxy");  
  12.          
  13.        System.out.println("---------------------");  
  14.          
  15.        book.printName();  
  16.          
  17.        System.out.println("---------------------");  
  18.          
  19.        book.printUrl();  
  20.          
  21.        System.out.println("----------------------");  
  22.          
  23.        try{  
  24.              
  25.           book.printThrowException();  
  26.              
  27.        }catch(Exception e){  
  28.          //  e.printStackTrace();  
  29.        }  
  30.          
  31.          
  32. }  
  33. }  
package com.myapp.core.aop.advice;

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

public class MainTest {
   public static void main(String[] args) {
	  
	   ApplicationContext  context  = new  ClassPathXmlApplicationContext("resource/aop.xml");
	   
	   Book   book  =   (Book) context.getBean("bookProxy");
	   
	   System.out.println("---------------------");
       
	   book.printName();
	   
	   System.out.println("---------------------");
	   
	   book.printUrl();
	   
	   System.out.println("----------------------");
	   
	   try{
		   
		  book.printThrowException();
		   
	   }catch(Exception e){
		 //  e.printStackTrace();
	   }
	   
	   
}
}
注意以上获得的是代理bean；
运行结果如下：
[plain] view plain copy print?
  1. 三月 20, 2013 2:18:56 下午 org.springframework.context.support.AbstractApplicationContext prepareRefresh  
  2. INFO: Refreshing org[email protected]eb67e8: startup date [Wed Mar 20 14:18:55 CST 2013]; root of context hierarchy  
  3. 三月 20, 2013 2:18:56 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions  
  4. INFO: Loading XML bean definitions from class path resource [resource/aop.xml]  
  5. 三月 20, 2013 2:18:57 下午 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons  
  6. INFO: Pre-instantiating singletons in org.s[email protected]157985: defining beans [book,beforeMethodBean,bookProxy]; root of factory hierarchy  
  7. ---------------------  
  8. Before  Method  
  9. --------------------  
  10. Book name Effective java  
  11. ---------------------  
  12. Before  Method  
  13. --------------------  
  14. Book URL www.google.cn  
  15. ----------------------  
  16. Before  Method  
  17. --------------------  
三月 20, 2013 2:18:56 下午 org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org[email protected]eb67e8: startup date [Wed Mar 20 14:18:55 CST 2013]; root of context hierarchy
三月 20, 2013 2:18:56 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [resource/aop.xml]
三月 20, 2013 2:18:57 下午 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
INFO: Pre-instantiating singletons in org.s[email protected]157985: defining beans [book,beforeMethodBean,bookProxy]; root of factory hierarchy
---------------------
Before  Method
--------------------
Book name Effective java
---------------------
Before  Method
--------------------
Book URL www.google.cn
----------------------
Before  Method
--------------------

2： after  advice

在方法运行返回结果后将执行这个 afterReturning方法，创建的这个类必须实现：AfterReturningAdvice接口
[java] view plain copy print?
  1. package com.myapp.core.aop.advice;  
  2.   
  3. import java.lang.reflect.Method;  
  4.   
  5. import org.springframework.aop.AfterReturningAdvice;  
  6.   
  7. public class AfterMethod  implements  AfterReturningAdvice {  
  8.   
  9.     @Override  
  10.     public void afterReturning(Object arg0, Method arg1, Object[] arg2,  
  11.             Object arg3) throws Throwable {  
  12.         // TODO Auto-generated method stub  
  13.           
  14.         System.out.println("-------------------");  
  15.           
  16.         System.out.println("After  method ");  
  17.           
  18.           
  19.           
  20.     }  
  21.   
  22. }  
package com.myapp.core.aop.advice;

import java.lang.reflect.Method;

import org.springframework.aop.AfterReturningAdvice;

public class AfterMethod  implements  AfterReturningAdvice {

	@Override
	public void afterReturning(Object arg0, Method arg1, Object[] arg2,
			Object arg3) throws Throwable {
		// TODO Auto-generated method stub
		
		System.out.println("-------------------");
		
		System.out.println("After  method ");
		
		
		
	}

}
xml配置文件：
[html] view plain copy print?
  1. <?xml version="1.0" encoding="UTF-8"?>  
  2. <beans xmlns="http://www.springframework.org/schema/beans"  
  3.        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  4.        xsi:schemaLocation="http://www.springframework.org/schema/beans  
  5.            http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">  
  6.   
  7.   <!-- more bean definitions for data access objects go here -->  
  8.      
  9.     <bean id="book" class="com.myapp.core.aop.advice.Book">  
  10.         <property name="name" value="Effective java" />  
  11.         <property name="url" value="www.google.cn"/>  
  12.         <property name="pages" value="300" />  
  13.     </bean>  
  14.       
  15.     <bean id="beforeMethodBean" class="com.myapp.core.aop.advice.BeforeMethod" />  
  16.       
  17.       <bean id="afterMethodBean" class="com.myapp.core.aop.advice.AfterMethod" />  
  18.       
  19.     <bean id="bookProxy" class="org.springframework.aop.framework.ProxyFactoryBean">  
  20.        
  21.      <property name="target" ref="book"/>  
  22.        
  23.      <property name="interceptorNames">  
  24.        <list>  
  25.         <value>beforeMethodBean</value>  
  26.         <value>afterMethodBean</value>  
  27.        </list>  
  28.      </property>  
  29.       
  30.      </bean>  
  31. </beans>  
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

  <!-- more bean definitions for data access objects go here -->
   
    <bean id="book" class="com.myapp.core.aop.advice.Book">
	    <property name="name" value="Effective java" />
	    <property name="url" value="www.google.cn"/>
	    <property name="pages" value="300" />
    </bean>
    
    <bean id="beforeMethodBean" class="com.myapp.core.aop.advice.BeforeMethod" />
    
      <bean id="afterMethodBean" class="com.myapp.core.aop.advice.AfterMethod" />
    
    <bean id="bookProxy" class="org.springframework.aop.framework.ProxyFactoryBean">
     
     <property name="target" ref="book"/>
     
     <property name="interceptorNames">
       <list>
        <value>beforeMethodBean</value>
        <value>afterMethodBean</value>
       </list>
     </property>
    
     </bean>
</beans>
运行结果如下：
[plain] view plain copy print?
  1. 三月 20, 2013 2:22:19 下午 org.springframework.context.support.AbstractApplicationContext prepareRefresh  
  2. INFO: Refreshing org[email protected]eb67e8: startup date [Wed Mar 20 14:22:19 CST 2013]; root of context hierarchy  
  3. 三月 20, 2013 2:22:19 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions  
  4. INFO: Loading XML bean definitions from class path resource [resource/aop.xml]  
  5. 三月 20, 2013 2:22:20 下午 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons  
  6. INFO: Pre-instantiating singletons in org.s[email protected]157985: defining beans [book,beforeMethodBean,afterMethodBean,bookProxy]; root of factory hierarchy  
  7. ---------------------  
  8. Before  Method  
  9. --------------------  
  10. Book name Effective java  
  11. -------------------  
  12. After  method   
  13. ---------------------  
  14. Before  Method  
  15. --------------------  
  16. Book URL www.google.cn  
  17. -------------------  
  18. After  method   
  19. ----------------------  
  20. Before  Method  
  21. --------------------  
三月 20, 2013 2:22:19 下午 org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org[email protected]eb67e8: startup date [Wed Mar 20 14:22:19 CST 2013]; root of context hierarchy
三月 20, 2013 2:22:19 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [resource/aop.xml]
三月 20, 2013 2:22:20 下午 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
INFO: Pre-instantiating singletons in org.s[email protected]157985: defining beans [book,beforeMethodBean,afterMethodBean,bookProxy]; root of factory hierarchy
---------------------
Before  Method
--------------------
Book name Effective java
-------------------
After  method 
---------------------
Before  Method
--------------------
Book URL www.google.cn
-------------------
After  method 
----------------------
Before  Method
--------------------

3：after  throwing  advice 

当方法执行抛出一个异常后，会执行这个方法，创建一个类实现：ThrowsAdvice接口，创建一个afterThrowing拦截：IllegalArgumentException异常。
类如下：
[java] view plain copy print?
  1. package com.myapp.core.aop.advice;  
  2.   
  3. import org.springframework.aop.ThrowsAdvice;  
  4.   
  5. public class ThrowException  implements ThrowsAdvice{  
  6.      
  7.     public  void  afterThrowing(IllegalArgumentException e)  throws  Throwable{  
  8.         System.out.println("after Throwing  Exception");  
  9.     }  
  10. }  
package com.myapp.core.aop.advice;

import org.springframework.aop.ThrowsAdvice;

public class ThrowException  implements ThrowsAdvice{
   
	public  void  afterThrowing(IllegalArgumentException e)  throws  Throwable{
		System.out.println("after Throwing  Exception");
	}
}
xml中配置文件如下：
[html] view plain copy print?
  1. <?xml version="1.0" encoding="UTF-8"?>  
  2. <beans xmlns="http://www.springframework.org/schema/beans"  
  3.        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  4.        xsi:schemaLocation="http://www.springframework.org/schema/beans  
  5.            http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">  
  6.   
  7.   <!-- more bean definitions for data access objects go here -->  
  8.      
  9.     <bean id="book" class="com.myapp.core.aop.advice.Book">  
  10.         <property name="name" value="Effective java" />  
  11.         <property name="url" value="www.google.cn"/>  
  12.         <property name="pages" value="300" />  
  13.     </bean>  
  14.       
  15.     <!-- before  advice -->  
  16.     <bean id="beforeMethodBean" class="com.myapp.core.aop.advice.BeforeMethod" />  
  17.       
  18.     <!-- after  advice -->  
  19.       <bean id="afterMethodBean" class="com.myapp.core.aop.advice.AfterMethod" />  
  20.         
  21.       <!-- throwing  advice -->  
  22.         
  23.       <bean id="throwException" class="com.myapp.core.aop.advice.ThrowException" />  
  24.       
  25.     <bean id="bookProxy" class="org.springframework.aop.framework.ProxyFactoryBean">  
  26.        
  27.      <property name="target" ref="book"/>  
  28.        
  29.      <property name="interceptorNames">  
  30.        <list>  
  31.         <value>beforeMethodBean</value>  
  32.         <value>afterMethodBean</value>  
  33.         <value>throwException</value>  
  34.        </list>  
  35.      </property>  
  36.       
  37.      </bean>  
  38. </beans>  
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

  <!-- more bean definitions for data access objects go here -->
   
    <bean id="book" class="com.myapp.core.aop.advice.Book">
	    <property name="name" value="Effective java" />
	    <property name="url" value="www.google.cn"/>
	    <property name="pages" value="300" />
    </bean>
    
    <!-- before  advice -->
    <bean id="beforeMethodBean" class="com.myapp.core.aop.advice.BeforeMethod" />
    
    <!-- after  advice -->
      <bean id="afterMethodBean" class="com.myapp.core.aop.advice.AfterMethod" />
      
      <!-- throwing  advice -->
      
      <bean id="throwException" class="com.myapp.core.aop.advice.ThrowException" />
    
    <bean id="bookProxy" class="org.springframework.aop.framework.ProxyFactoryBean">
     
     <property name="target" ref="book"/>
     
     <property name="interceptorNames">
       <list>
        <value>beforeMethodBean</value>
        <value>afterMethodBean</value>
        <value>throwException</value>
       </list>
     </property>
    
     </bean>
</beans>
执行结果如下：
[plain] view plain copy print?
  1. 三月 20, 2013 2:37:36 下午 org.springframework.context.support.AbstractApplicationContext prepareRefresh  
  2. INFO: Refreshing org[email protected]eb67e8: startup date [Wed Mar 20 14:37:36 CST 2013]; root of context hierarchy  
  3. 三月 20, 2013 2:37:36 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions  
  4. INFO: Loading XML bean definitions from class path resource [resource/aop.xml]  
  5. 三月 20, 2013 2:37:36 下午 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons  
  6. INFO: Pre-instantiating singletons in org.s[email protected]157985: defining beans [book,beforeMethodBean,afterMethodBean,throwException,bookProxy]; root of factory hierarchy  
  7. ---------------------  
  8. Before  Method  
  9. --------------------  
  10. Book name Effective java  
  11. -------------------  
  12. After  method   
  13. ---------------------  
  14. Before  Method  
  15. --------------------  
  16. Book URL www.google.cn  
  17. -------------------  
  18. After  method   
  19. ----------------------  
  20. Before  Method  
  21. --------------------  
  22. after Throwing  Exception  
三月 20, 2013 2:37:36 下午 org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org[email protected]eb67e8: startup date [Wed Mar 20 14:37:36 CST 2013]; root of context hierarchy
三月 20, 2013 2:37:36 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [resource/aop.xml]
三月 20, 2013 2:37:36 下午 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
INFO: Pre-instantiating singletons in org.s[email protected]157985: defining beans [book,beforeMethodBean,afterMethodBean,throwException,bookProxy]; root of factory hierarchy
---------------------
Before  Method
--------------------
Book name Effective java
-------------------
After  method 
---------------------
Before  Method
--------------------
Book URL www.google.cn
-------------------
After  method 
----------------------
Before  Method
--------------------
after Throwing  Exception

4：Around  advice

这个advice 联合了上面的三个advices，在方法执行期间执行，创建一个类实现MethodInterceptor接口，需要在方法中执行Object result = methodInvocation.proceed();方法才能得到执行，否则方法不会执行。
类如下：
[java] view plain copy print?
  1. package com.myapp.core.aop.advice;  
  2.   
  3. import java.util.Arrays;  
  4.   
  5. import org.aopalliance.intercept.MethodInterceptor;  
  6. import org.aopalliance.intercept.MethodInvocation;  
  7.   
  8. public class AroundMethod  implements MethodInterceptor{  
  9.   
  10.     @Override  
  11.     public Object invoke(MethodInvocation methodInvocation) throws Throwable {  
  12.         // TODO Auto-generated method stub  
  13.           
  14.         System.out.println("method  name:" + methodInvocation.getMethod().getName());  
  15.           
  16.         System.out.println("method  arguments" + Arrays.toString(methodInvocation.getArguments()));  
  17.           
  18.         System.out.println("Around  method : before ");  
  19.           
  20.         try{  
  21.               
  22.             Object result = methodInvocation.proceed();  
  23.               
  24.             System.out.println("Around method : after ");  
  25.             return  result;  
  26.               
  27.         }catch(IllegalArgumentException e){  
  28.               
  29.             System.out.println("Around method : throw  an  exception ");  
  30.             throw  e;  
  31.         }  
  32.     }  
  33.   
  34. }  
package com.myapp.core.aop.advice;

import java.util.Arrays;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

public class AroundMethod  implements MethodInterceptor{

	@Override
	public Object invoke(MethodInvocation methodInvocation) throws Throwable {
		// TODO Auto-generated method stub
		
		System.out.println("method  name:" + methodInvocation.getMethod().getName());
		
		System.out.println("method  arguments" + Arrays.toString(methodInvocation.getArguments()));
		
		System.out.println("Around  method : before ");
		
		try{
			
			Object result = methodInvocation.proceed();
			
			System.out.println("Around method : after ");
			return  result;
			
		}catch(IllegalArgumentException e){
			
			System.out.println("Around method : throw  an  exception ");
			throw  e;
		}
	}

}
配置文件如下：
[html] view plain copy print?
  1. <?xml version="1.0" encoding="UTF-8"?>  
  2. <beans xmlns="http://www.springframework.org/schema/beans"  
  3.        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  4.        xsi:schemaLocation="http://www.springframework.org/schema/beans  
  5.            http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">  
  6.   
  7.   <!-- more bean definitions for data access objects go here -->  
  8.      
  9.     <bean id="book" class="com.myapp.core.aop.advice.Book">  
  10.         <property name="name" value="Effective java" />  
  11.         <property name="url" value="www.google.cn"/>  
  12.         <property name="pages" value="300" />  
  13.     </bean>  
  14.     
  15.     <bean id="aroundMethod"  class="com.myapp.core.aop.advice.AroundMethod" />  
  16.       
  17.     <bean id="bookProxy" class="org.springframework.aop.framework.ProxyFactoryBean" >  
  18.      <property name="target" ref="book"/>  
  19.        
  20.      <property name="interceptorNames">  
  21.        <list>  
  22.       
  23.          <value>aroundMethod</value>  
  24.        </list>  
  25.      </property>  
  26.       
  27.      </bean>  
  28. </beans>  
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

  <!-- more bean definitions for data access objects go here -->
   
    <bean id="book" class="com.myapp.core.aop.advice.Book">
	    <property name="name" value="Effective java" />
	    <property name="url" value="www.google.cn"/>
	    <property name="pages" value="300" />
    </bean>
  
    <bean id="aroundMethod"  class="com.myapp.core.aop.advice.AroundMethod" />
    
    <bean id="bookProxy" class="org.springframework.aop.framework.ProxyFactoryBean" >
     <property name="target" ref="book"/>
     
     <property name="interceptorNames">
       <list>
    
         <value>aroundMethod</value>
       </list>
     </property>
    
     </bean>
</beans>
测试结果：
[plain] view plain copy print?
  1. 三月 20, 2013 3:02:19 下午 org.springframework.context.support.AbstractApplicationContext prepareRefresh  
  2. INFO: Refreshing org[email protected]eb67e8: startup date [Wed Mar 20 15:02:19 CST 2013]; root of context hierarchy  
  3. 三月 20, 2013 3:02:19 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions  
  4. INFO: Loading XML bean definitions from class path resource [resource/aop.xml]  
  5. 三月 20, 2013 3:02:19 下午 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons  
  6. INFO: Pre-instantiating singletons in org.s[email protected]e29127: defining beans [book,aroundMethod,bookProxy]; root of factory hierarchy  
  7. ---------------------  
  8. method  name:printName  
  9. method  arguments[]  
  10. Around  method : before   
  11. Book name Effective java  
  12. Around method : after   
  13. ---------------------  
  14. method  name:printUrl  
  15. method  arguments[]  
  16. Around  method : before   
  17. Book URL www.google.cn  
  18. Around method : after   
  19. ----------------------  
  20. method  name:printThrowException  
  21. method  arguments[]  
  22. Around  method : before   
  23. Around method : throw  an  exception   
三月 20, 2013 3:02:19 下午 org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org[email protected]eb67e8: startup date [Wed Mar 20 15:02:19 CST 2013]; root of context hierarchy
三月 20, 2013 3:02:19 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [resource/aop.xml]
三月 20, 2013 3:02:19 下午 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
INFO: Pre-instantiating singletons in org.s[email protected]e29127: defining beans [book,aroundMethod,bookProxy]; root of factory hierarchy
---------------------
method  name:printName
method  arguments[]
Around  method : before 
Book name Effective java
Around method : after 
---------------------
method  name:printUrl
method  arguments[]
Around  method : before 
Book URL www.google.cn
Around method : after 
----------------------
method  name:printThrowException
method  arguments[]
Around  method : before 
Around method : throw  an  exception
around  advice得到实现。 over

以上是关于Spring AOP 中 advice 的四种类型 before after throwing advice around的主要内容，如果未能解决你的问题，请参考以下文章

Spring AOP里面的通知Advice类型

spring AOP advice 类型 和 通用的切点的配置方式

Spring学习(十五)----- Spring AOP通知实例 – Advice

Spring中Aop是如何使用的呢？

正确理解Spring AOP中的Around advice

Spring-aop实现切面的四种方式