實現1：基於xml

1 package com.rr.spring3.interf;  //接口
2 
3 public interface SayHello {
4 
5     public void sayHello();
6 }

 1 package com.rr.spring3.interf.impl; //接口實現類
 2 
 3 import com.rr.spring3.interf.SayHello;
 4 
 5 public class Hello implements SayHello {
 6     public void sayHello() {
 7         System.out.println("hello");
 
 8     }
 9 
10 }

 1 package com.rr.spring3.aop;//切面類+通知
 2 
 3 public class HelloAspect {
 4     
 5     // 前置通知
 6     public void beforeAdvice() {
 7         System.out.println("===========before advice");
 8     }
 9 
10     // 後置最終通知
11     public void afterFinallyAdvice() {
12         System.out.println("===========after finally advice");
 
13     }
14 
15 }

 1 <!-- 目標類 -->
 2 <bean id="hello" class="com.rr.spring3.interf.impl.Hello"/>
 3 <!-- 切面類 -->
 4 <bean id="helloAspect" class="com.rr.spring3.aop.HelloAspect"/>
 5 
 6 <aop:config>
 7   <!-- 引用切面類  -->
 8    <aop:aspect ref="helloAspect">
 9
 
        <!--  切入點 -->
10        <aop:pointcut id="pc" expression="execution(* com.rr.spring3.interf.*.*(..))"/>
11        <!-- 引用切入點 ，指定通知-->
12        <aop:before pointcut-ref="pc" method="beforeAdvice"/>
13        <aop:after pointcut="execution(* com.rr.spring3.interf.*.*(..))"  method="afterFinallyAdvice"/>
14    </aop:aspect>
15 </aop:config>

實現2：基於java5 註解 @Aspect

接口和接口實現類同上

 1 package com.rr.spring3.aop; //切面類+通知
 2 
 3 import org.aspectj.lang.annotation.After; //java5 註解
 4 import org.aspectj.lang.annotation.Aspect;
 5 import org.aspectj.lang.annotation.Before;
 6 import org.aspectj.lang.annotation.Pointcut;
 7 
 8 @Aspect  
 9 public class HelloAspect {
10 
11     @Pointcut("execution(* com.rr.spring3.interf.*.*(..))")
12     private void selectAll() {}
13     
14     // 前置通知
15     @Before("selectAll()")
16     public void beforeAdvice() {
17         System.out.println("===========before advice");
18     }
19 
20     // 後置最終通知
21     @After("selectAll()")
22     public void afterFinallyAdvice() {
23         System.out.println("===========after finally advice");
24     }
25 
26 }

1 <aop:aspectj-autoproxy/>  <!-- 開啟註解 -->
2 <!-- 目標類 -->
3 <bean id="hello" class="com.rr.spring3.interf.impl.Hello"/>
4 <!-- 切面類 -->
5 <bean id="helloAspect" class="com.rr.spring3.aop.HelloAspect"/>

測試結果：

spring ----> aop的兩種實現方式