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();
}