ublic interface ISomeService {

    public void doSome();

    public String dade();

}

public class SomeService implements ISomeService {

    //核心业务

    public void doSome(){

        System.out.println("我们都要找到Java开发工作，薪资6,7,8,9,10K");

    }

    public String dade() {

        System.out.println("==================");

        return "add";

    }

}

import org.aspectj.lang.ProceedingJoinPoint;

import org.aspectj.lang.annotation.*;

/**

 * Created by QiuShao on 2017/7/31.

 */

@Aspect

public class MyAspect {

    /*前置增强*/

    @Before(value = "execution(* *..spring17.*.*(..))")

    public void before(){

        System.out.println("前置增强");

    }

    /*后置增强*/

    @AfterReturning(value = "execution(* *..spring17.*.*(..))")

    public void after(){

        System.out.println("后置增强");

    }

    /*环绕增强*/

    @Around(value = "execution(* *..spring17.*.*(..))")

    public Object around(ProceedingJoinPoint proceed) throws Throwable {

        System.out.println("环绕前");

        Object result=proceed.proceed();

        System.out.println("环绕后");

        if(result!=null){

           return result;

            /*String str=(String)result;

            return str.toUpperCase();*/

        }else {

            return null;

        }

    }

}

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

<beans xmlns="http://www.springframework.org/schema/beans"

       xmlns:aop="http://www.springframework.org/schema/aop"

       xmlns:context="http://www.springframework.org/schema/context"

       xmlns:p="http://www.springframework.org/schema/p"

       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

       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

        http://www.springframework.org/schema/context  http://www.springframework.org/schema/context/spring-context.xsd

">

    <!--01.目标对象-->

    <bean id="someService" class="cn.bdqn.spring17.SomeService"></bean>

    <!--02.增强 通知-->

    <bean class="cn.bdqn.spring17.MyAspect"></bean>

    <aop:aspectj-autoproxy/>

</beans>

 // aspectj 注解

    @Test

    public void test011(){

        ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContextspring15.xml");

        ISomeService service = (ISomeService) ctx.getBean("someService");

        service.doSome();

        String aa= service.dade();

        System.out.println(aa);

    }