Spring XML配置实现AOP

时间：2024-01-05 23:11:20

1:  首先我们要定义 配置成切面的类

package cn.gbx.example;

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;

public class MyXmlIntercept {

	public void doAccessCheck() {

		System.out.println("前置通知");

	}

	public void doAfterReturning() {

		System.out.println("后置通知");

	}

	public void doAfter() {

		System.out.println("最终通知");

	}

	public void doAfterThrowing() {

		System.out.println("例外通知");

	}

	public Object doBasicProfiling(ProceedingJoinPoint pjp) throws Throwable {

		System.out.println("进入方法");

		Object value = pjp.proceed();

		System.out.println("退出方法");

		return value;

	}

}

　　

然后再XML文件中将其配置成切面

<?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:aop="http://www.springframework.org/schema/aop"

       xmlns:context="http://www.springframework.org/schema/context"

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

           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd

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

           http://www.springframework.org/schema/context/spring-context-2.5.xsd

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

           http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">

         <aop:aspectj-autoproxy/>

         <bean id="personService" class="cn.gbx.serviceimpl.PersonServiceImpl"></bean>

         <bean id="myXmlIntercept" class="cn.gbx.example.MyXmlIntercept"></bean>

         <aop:config>

         	<aop:aspect id="myasp" ref="myXmlIntercept">

         		<aop:pointcut expression="execution (* cn.gbx.serviceimpl.PersonServiceImpl.*(..))" id="mycut"/>

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

         		<aop:after-returning pointcut-ref="mycut" method="doAfterReturning"/>

			  	<aop:after-throwing pointcut-ref="mycut" method="doAfterThrowing"/>

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

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

         	</aop:aspect>

         </aop:config>

</beans>

　　

然后测试即可。

简单说明

 expression="execution (* cn.gbx.serviceimpl.PersonServiceImpl.*(..))"
如果我们要要返回值烈性为Stirng的 方法才被拦截
execution (java.lang.String cn.gbx.serviceimpl.PersonServiceImpl.*(..))

如果我们要求参数第一个为String ， 后边不限
expression="execution (* cn.gbx.serviceimpl.PersonServiceImpl.*(java.lang.String, ..))"

要求返回至为非void
expression="execution (!void cn.gbx.serviceimpl.PersonServiceImpl.*(..))"


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