XML方式实现Spring的AOP

1、编写切面类

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package com.fz.annotation.aop;   import org.aspectj.lang.ProceedingJoinPoint; 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; import org.springframework.stereotype.Component;   public class LogInterceptor {           public void before(){         System.out.println("方法之前执行....");     }     public void afterRutting(){         System.out.println("方法正常执行之后....");     }     public void afterThrowing(){         System.out.println("方法抛出异常之后....");     }     public void around(ProceedingJoinPoint pjp) throws Throwable{         System.out.println("方法执之前around......");         pjp.proceed();//向下继续方法的执行：（包括执行其他切面的拦截，如果当中抛出异常，则不会向下继续执行）         System.out.println("方法执之后around......");//这里会在@AfterReturning执行之后执行     } }

2、编写applicationContext.xml文件

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<?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-3.0.xsd            http://www.springframework.org/schema/context            http://www.springframework.org/schema/context/spring-context-3.0.xsd            http://www.springframework.org/schema/aop            http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">     <context:annotation-config />     <context:component-scan base-package="com.fz.annotation" />     <bean id="logInterceptor" class="com.fz.annotation.aop.LogInterceptor">     </bean>     <aop:config>         <aop:pointcut             expression="execution(public void com.fz.annotation.service.impl.UserServiceImpl.userAdd(com.fz.xml.entity.User))"             id="servicePointcut" />         <aop:aspect id="logAspect" ref="logInterceptor">             <aop:before method="before" pointcut-ref="servicePointcut" />         </aop:aspect>     </aop:config>       </beans>

其中：<aop:pointcut>标签和<aop:aspect>同级，表示<aop:pointcut>是一个全局的pointcut

也可以让pointcut只供某一个逻辑使用，像下面这样写

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<aop:config>     <aop:aspect id="logAspect" ref="logInterceptor">          <aop:pointcut id="servicePointcut"         expression="execution(public void com.fz.annotation.service.impl.UserServiceImpl.userAdd(com.fz.xml.entity.User))"/>                 <aop:before method="before" pointcut-ref="servicePointcut" />     </aop:aspect> </aop:config>

还有可以这样写，注意：直接在before里写pointcut属性的时候需要将pointcut-ref属性去掉

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<aop:config>     <aop:aspect id="logAspect" ref="logInterceptor">         <aop:before method="before" pointcut="execution(public void com.fz.annotation.service.impl.UserServiceImpl.userAdd(com.fz.xml.entity.User))"/>     </aop:aspect> </aop:config>

来自为知笔记(Wiz)