XML方式实现Spring的AOP

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@H_403_0@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( @H_301_153@"方法之前执行...." );
}
public void afterRutting(){
System.out.println( @H_301_153@"方法正常执行之后...." );
}
public void afterThrowing(){
System.out.println( @H_301_153@"方法抛出异常之后...." );
}
public void around(ProceedingJoinPoint pjp) throws Throwable{
System.out.println( @H_301_153@"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( @H_301_153@"方法执之后around......" ); //这里会在@AfterReturning执行之后执行
}
}

@H_403_0@2、编写applicationContext.xml文件

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<? xml version = "1.0" encoding = "UTF-8" ?>
< 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:@H_403_0@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 >




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