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