Spring_Spring与AOP_AspectJ基于XML的实现

一、前置通知

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;

@Aspect  //表示当前类为切面
public class MyAspect {
   @Before("execution(* *..ISomeService.doFirst(..))")
   public void  myBefore(){
       System.out.println("执行前置通知方法");
   }
   
   @Before("execution(* *..ISomeService.doFirst(..))")
   public void   myBefore(JoinPoint jp){
       System.out.println("执行前置通知方法 jp="+jp);
   }
   
   @AfterReturning("execution(* *..ISomeService.doSecond(..))")
   public void myAfterReturning(){
       System.out.println("执行后置通知方法");
       
   }
   
   @AfterReturning(value="execution(* *..ISomeService.doSecond(..))",returning="result")
   public void myAfterReturning(Object result){
       System.out.println("执行后置通知方法 result="+result);
       
   }
   
   @Around("execution(* *..ISomeService.doSecond(..))")
   public Object myAround(ProceedingJoinPoint pjp) throws Throwable{
       System.out.println("执行环绕通知方法，目标方法执行之前");
       //执行目标方法
       Object result = pjp.proceed();
       System.out.println("执行环绕通知方法，目标方法执行之后");
       if(result !=null){
            result=((String)result).toUpperCase();
       }
       return result;  
   }
   
   @AfterThrowing(value="execution(* *..ISomeService.doThird(..))",throwing="ex")
   public void myAfterThrowing(Exception ex){
      System.out.println("执行异常通知方法ex="+ex.getMessage());  
   }
   
   @After("doThirdPointcut()")
   public void myAfter(){
      System.out.println("执行最终通知方法");  
   }
   //定义了一个切入点，叫doThirdPointcut()
   @Pointcut("execution(* *..ISomeService.doThird(..))")
   public void doThirdPointcut(){}
}

<!-- 注册切面 -->
    <bean id="myAspect" class="com.bjpowernode.xml.MyAspect"></bean>
     <!-- 注册目标对象 -->
     <bean id="someService" class="com.bjpowernode.xml.SomeServiceImpl"></bean> 
     <!-- AOP配置 -->
     <aop:config>
        <aop:pointcut expression="execution(* *..ISomeService.doFirst(..))" id="doFirstPointcut"/>
        <aop:pointcut expression="execution(* *..ISomeService.doSecond(..))" id="doSecond1Pointcut"/>
        <aop:pointcut expression="execution(* *..ISomeService.doThird(..))" id="doThirdPointcut"/>
        <aop:aspect ref="myAspect">
          <aop:before method="myBefore" pointcut-ref="doFirstPointcut"/>
          <aop:before method="myBefore(org.aspectj.lang.JoinPoint)" pointcut-ref="doFirstPointcut"/>
        </aop:aspect>
     </aop:config>

二、后置通知

          <aop:after-returning method="myAfterReturning" pointcut-ref="doSecondPointcut"/>
          <aop:after-returning method="myAfterReturning(java.lang.Object)" pointcut-ref="doSecondPointcut" returning="result" />

三、环绕通知

 <aop:around method="myAround" pointcut-ref="doSecondPointcut"/>

四、异常通知

 <aop:after-throwing method="myAfterThrowing(java.lang.Exception)" pointcut-ref="doThirdPointcut" throwing="ex"/>

五、最终通知

<aop:after method="myAfter" pointcut-ref="doThirdPointcut"/>