Spring基于advisor配置aop过程解析

1、目标类

package com.gec.target;public class Hadoop { public void eatting() { System.out.println('大象正在吃东西 1'); try { //耗时5秒 Thread.sleep(5000); } catch (InterruptedException e) { e.printStackTrace(); } }}

2、增强类，此类必须要实现增强方位接口

package com.gec.advice; import org.springframework.aop.MethodBeforeAdvice; import java.lang.reflect.Method; public class BeforeMethodAdvice implements MethodBeforeAdvice { @Overridepublic void before(Method method, Object[] objects, Object o) throws Throwable { System.out.println('how are you'); } }

3、配置文件

<?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:p='http://www.springframework.org/schema/p' xmlns:context='http://www.springframework.org/schema/context' xmlns:util='http://www.springframework.org/schema/util' xmlns:aop='http://www.springframework.org/schema/aop' xsi:schemaLocation='http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.3.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsdhttp://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd'><aop:aspectj-autoproxy /> <bean /> <bean /> <aop:config> <!--定义一个切面--> <aop:advisor advice-ref='beforeMethodAdvice' pointcut='execution (* eatting(..))' /> </aop:config> </beans>

4、测试

public static void main(String[] args) { ApplicationContext ctx=new ClassPathXmlApplicationContext('beans.xml'); Hadoop hadoop= (Hadoop) ctx.getBean('hadoop'); hadoop.eatting(); }

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