AspectJ 基于注解的实现前置通知

Spring环境下AspectJ 基于注解的实现前置通知

所需jar：http://pan.baidu.com/s/1qXH1Mnq

接口

package com.hk.spring.annotation;

public interface ISomeService {
public void doFirst();
public void doSecond();
public String doThird();

}

接口实现

package com.hk.spring.annotation;

public class ISomeServiceImpl implements ISomeService {

@Override
public void doFirst() {
System.out.println("主业务逻辑doFirst执行");
}

@Override
public void doSecond() {
System.out.println("主业务逻辑doSecond执行");

}

@Override
public String doThird() {
System.out.println("主业务逻辑doThird执行");
return "ABC";

}

}

切面类

package com.hk.spring.annotation;

import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;

/**
*  定义一个简单的POJO类作为切面
* @author 浪丶荡
*
*/
@Aspect     //表示当前类为切面
public class MyAspect {

@Before("execution(* *..ISomeService.doFirst(..))")     //表示前置通知的切入点表达式
public void before(){
System.out.println("前置方法");
}
}

配置

<?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" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
<!-- 注册目标对象 -->
<bean id="someService" class="com.hk.spring.annotation.ISomeServiceImpl"></bean>
<!-- 注册切面 -->
<bean id="myAspect" class="com.hk.spring.annotation.MyAspect"></bean>
<!-- 注册Aspect的自动代理对象 -->
<aop:aspectj-autoproxy></aop:aspectj-autoproxy>
</beans>

测试

package com.hk.spring.annotation;

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

public class Mytest {

@Test
public void test1(){
String resoure = "com/hk/spring/annotation/applicationContext.xml";
ApplicationContext ac = new ClassPathXmlApplicationContext(resoure);
ISomeService service = (ISomeService) ac.getBean("someService");
service.doFirst();
service.doSecond();
service.doThird();

}
}

结果

前置方法
主业务逻辑doFirst执行
主业务逻辑doSecond执行
主业务逻辑doThird执行