Spring aop标签的使用

笔者花了一点时间进行了关于spring aop标签的使用，希望能帮助初学spring框架的童鞋们。

只列举了最重要的部分。供参考

1.定义切面类

package com.lm.aop.xml;

import org.aspectj.lang.JoinPoint;

import org.aspectj.lang.ProceedingJoinPoint;

public class XmlHandler {

    //前置通知

    public void before(JoinPoint point){

        System.out.println(point.getSignature().getName()+"执行之前,before....");

    }

    //后置通知

    public void after(JoinPoint point){

        System.out.println(point.getSignature().getName()+"执行之前,after....");

    }

    //方法返回后通知

    public void returnafter(JoinPoint point){

        System.out.println(point.getSignature().getName()+"正常执行之后,returnafter....");

    }

    //环绕通知

    public Object around(ProceedingJoinPoint pjp) throws Throwable{

        System.out.println(pjp.getSignature().getName()+"执行之前,around....");

        Object proceed = pjp.proceed(); //执行目标对象的方法

        System.out.println(pjp.getSignature().getName()+"执行之后,around....");

        return proceed;

    }

    //异常通知

    public void throwingException(JoinPoint point,Exception ex){

        System.out.println(point.getSignature().getName()+"发生异常"+ex.getMessage());

    }

}

2.Spring Xml配置(Aop标签)

xml version = "1.0" encoding = "UTF-8" ?>

< beans xmlns = " http://www.springframework.org/schema/beans" ;

      xmlns:xsi = " http://www.w3.org/2001/XMLSchema-instance" ; xmlns:context = " http://www.springframework.org/schema/context" ;

      xmlns:aop = " http://www.springframework.org/schema/aop" ;

      xsi:schemaLocation = " http://www.springframework.org/schema/beans

http://www.springframework.org/schema/beans/spring-beans-3.2.xsd

http://www.springframework.org/schema/context

           http://www.springframework.org/schema/context/spring-context-3.2.xsd

http://www.springframework.org/schema/aop

http://www.springframework.org/schema/aop/spring-aop-3.2.xsd" ; >

     

      < bean name = "account" class = "com.lm.aop.bean.Account" >

           < property name = "id" value = "1" > property >

           < property name = "name" value = "LeeSin" > property >

           < property name = "balance" value = "5000" > property >

      bean >

     

      < bean name = "dao" class = "com.lm.aop.dao.AccountDaoImpl" > bean >

     

      < bean name = "service" class = "com.lm.aop.service.AccountServiceImpl" >

           < property name = "dao" ref = "dao" > property >

           < property name = "fromAccount" ref = "account" > property >

      bean >

     

      < bean name = "handler" class = "com.lm.aop.xml.XmlHandler" > bean >

     

      < aop:config >

       

           < aop:pointcut expression = "execution(* com.briup.aop.service.*.*(..))"

               id = "myPointCut" />

           < aop:aspect id = "aspect" ref = "handler" >

               < aop:before method = "before" pointcut-ref = "myPointCut" />

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

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

           aop:aspect >

      aop:config >

beans >