项目结构

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.ssttisme</groupId>
    <artifactId>spring_aop_expression</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.3.9.RELEASE</version>
        </dependency>
        <!--AOP的实现基于AspectJ框架 -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>1.8.9</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.9</version>
        </dependency>
    </dependencies>
</project>

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:p="http://www.springframework.org/schema/p" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:mvc="http://www.springframework.org/schema/mvc"
    xmlns:util="http://www.springframework.org/schema/util" xmlns:jpa="http://www.springframework.org/schema/data/jpa"
    xsi:schemaLocation="  
       http://www.springframework.org/schema/beans   
       http://www.springframework.org/schema/beans/spring-beans-4.3.xsd  
       http://www.springframework.org/schema/mvc   
       http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd   
       http://www.springframework.org/schema/tx   
       http://www.springframework.org/schema/tx/spring-tx-4.3.xsd   
       http://www.springframework.org/schema/aop 
       http://www.springframework.org/schema/aop/spring-aop-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/data/jpa 
       http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context-4.3.xsd">
    <!--配置组件扫描 -->
    <context:component-scan base-package="com" />
    <!--启用aop为bean创建动态代理对象-->
    <aop:aspectj-autoproxy/>
</beans>

package com.service;

public interface RoleService {
    void save(String role);
    int update(String role);
}

package com.service.impl;

import org.springframework.stereotype.Component;

import com.service.RoleService;
@Component
public class RoleServiceImpl implements RoleService{

    @Override
    public void save(String role) {
        System.out.println("save role "+role);
    }

    @Override
    public int update(String role) {
        System.out.println("update role "+role);
        return 1;
    }

}

package com.aspect;

import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.stereotype.Component;
/**切面*/
@Aspect
@Component
public class LogManager {
    @Before("bean(*ServiceImpl)")
    public void beforeAdvice(){
        System.out.println("开始日志。。。");
    }
    @After("bean(roleServiceImpl)")
    public void afterAdvice(){
        System.out.println("结束日志。。。");
    }
}

package com.app;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.service.RoleService;

public class RunApp {
    private static ClassPathXmlApplicationContext ctx=new ClassPathXmlApplicationContext();
    //初始化
    public static void init(){
        ctx=new ClassPathXmlApplicationContext("applicationContext.xml");
    }
    //释放资源
    public static void destory(){
        ctx.close();
    }
    public static void main(String[] args) {
        init();
        RoleService roleService=ctx.getBean("roleServiceImpl",RoleService.class);
        roleService.update("normal user");
        destory();
    }
}

运行结果

开始日志。。。
update role normal user
结束日志。。。