aop-前置通知

1、Class MyMethodBeforeAdvice

package com.aop01;

import java.lang.reflect.Method;

import org.springframework.aop.MethodBeforeAdvice;
//前置通知
public class MyMethodBeforeAdvice implements MethodBeforeAdvice {

//在目标方法执行之前执行
//methos:目标方法
//args:目标方法参数列表
//target:目标对象
@Override
public void before(Method method, Object[] args, Object target) throws Throwable {
	//对于目标方法的增强代码就应该写在这里
	System.out.println("执行前置通知方法");
}

}

2、Class MyTest

package com.aop01;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {

public static void main(String[] args) {
	
	String resource = "com/aop01/applicationContext.xml";
	ApplicationContext ac = new ClassPathXmlApplicationContext(resource);
	
	ISomeService service = (ISomeService) ac.getBean("serviceProxy");
	service.doFirst();
	System.out.println("------------------------------------");
	service.doSecond();
}

}

3、applicationContext.xml

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

<!-- 注册目标对象 -->
<bean id="someService" class="com.aop01.SomeServiceImpl"/>
<!-- 注册切面 -->
<bean id="myAdvice" class="com.aop01.MyMethodBeforeAdvice"/>
<!-- 生成代理对象 -->
<bean id="serviceProxy" class="org.springframework.aop.framework.ProxyFactoryBean">
	<!-- 指定目标对象 -->
	<property name="target" ref="someService"/>
	<!-- 指定切面 -->
	<property name="interceptorNames" value="myAdvice"/>
</bean>