spring ----> aop的两种实现方式

实现1：基于xml

 package com.rr.spring3.interf;  //接口

 public interface SayHello {

     public void sayHello();
 }

 package com.rr.spring3.interf.impl; //接口实现类

 import com.rr.spring3.interf.SayHello;

 public class Hello implements SayHello {
     public void sayHello() {
         System.out.println("hello");
     }

 }

 package com.rr.spring3.aop;//切面类+通知

 public class HelloAspect {

     // 前置通知
     public void beforeAdvice() {
         System.out.println("===========before advice");
     }

     // 后置最终通知
     public void afterFinallyAdvice() {
         System.out.println("===========after finally advice");
     }

 }

 <!-- 目标类 -->
 <bean id="hello" class="com.rr.spring3.interf.impl.Hello"/>
 <!-- 切面类 -->
 <bean id="helloAspect" class="com.rr.spring3.aop.HelloAspect"/>

 <aop:config>
   <!-- 引用切面类  -->
    <aop:aspect ref="helloAspect">
        <!--  切入点 -->
        <aop:pointcut id="pc" expression="execution(* com.rr.spring3.interf.*.*(..))"/>
        <!-- 引用切入点 ，指定通知-->
        <aop:before pointcut-ref="pc" method="beforeAdvice"/>
        <aop:after pointcut="execution(* com.rr.spring3.interf.*.*(..))"  method="afterFinallyAdvice"/>
    </aop:aspect>
 </aop:config>

实现2：基于java5 注解 @Aspect

接口和接口实现类同上

 package com.rr.spring3.aop; //切面类+通知

 import org.aspectj.lang.annotation.After; //基于 java5 注解
 import org.aspectj.lang.annotation.Aspect;
 import org.aspectj.lang.annotation.Before;
 import org.aspectj.lang.annotation.Pointcut;

 @Aspect
 public class HelloAspect {

     @Pointcut("execution(* com.rr.spring3.interf.*.*(..))")
     private void selectAll() {}

     // 前置通知
     @Before("selectAll()")
     public void beforeAdvice() {
         System.out.println("===========before advice");
     }

     // 后置最终通知
     @After("selectAll()")
     public void afterFinallyAdvice() {
         System.out.println("===========after finally advice");
     }

 }

 <aop:aspectj-autoproxy/>  <!-- 开启注解 -->
 <!-- 目标类 -->
 <bean id="hello" class="com.rr.spring3.interf.impl.Hello"/>
 <!-- 切面类 -->
 <bean id="helloAspect" class="com.rr.spring3.aop.HelloAspect"/>

测试结果：

note:

v1.0.1:

①第二种方法是aspectjweaver jar包的注解