spring使用advisor配置aop

spring使用advisor配置aop

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 { 
    @Override
	public 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.xsd
http://www.springframework.org/schema/aop                                                                       http://www.springframework.org/schema/aop/spring-aop-4.3.xsd">
<aop:aspectj-autoproxy /> 
    <bean id="beforeMethodAdvice" class="com.gec.advice.BeforeMethodAdvice" /> 
    <bean id="hadoop" class="com.gec.target.Hadoop" /> 
    <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(); 
}