<dependency>

<groupId>junit</groupId>

<artifactId>junit</artifactId>

<version>4.12</version>

</dependency>

<dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-test</artifactId>

<version>5.1.5.RELEASE</version>

</dependency>

<dependency>

<groupId>cglib</groupId>

<artifactId>cglib</artifactId>

<version>3.1</version>

</dependency>

<dependency>

<groupId>org.aspectj</groupId>

<artifactId>aspectjweaver</artifactId>

<version>1.9.2</version>

</dependency>

</dependencies>

</project>

applicationContext.xml

<?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:context="http://www.springframework.org/schema/context"

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

xsi:schemaLocation="

http://www.springframework.org/schema/aop

https://www.springframework.org/schema/aop/spring-aop.xsd

http://www.springframework.org/schema/context

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

http://www.springframework.org/schema/beans

https://www.springframework.org/schema/beans/spring-beans.xsd">

<context:component-scan base-package="com.xbj"/>

<aop:config proxy-target-class="true">

<aop:aspect ref="myAdvices">

<aop:pointcut id="pc" expression="execution(* com.xbj.service.impl..(..))"/>

<aop:before method="before" pointcut-ref="pc" />

<aop:after-returning method="afterRunturn" pointcut-ref="pc" />

<aop:after method="afterfinally" pointcut-ref="pc" />

<aop:around method="around" pointcut-ref="pc" />

<aop:after-throwing method="afterThorw" pointcut-ref="pc" throwing="ex" />

</aop:aspect>

</aop:config>

</beans>

UserController.java

package com.xbj.controller;

import com.xbj.service.UserService;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

/**

• @Author:晓宇码匠

• @Date：2019/6/15 0015

*/

/* @Controller @Repository @Component @Service 都是将 bean 放入 Ioc 容器中，只是为了代码的可读性而去区别开

• @Autowired 是从 Ioc 容器拿对象

• */

@Controller

public class UserController {

@Autowired

private UserService userService;

public void addUser(){

userService.addUser();

}

}

UserDao.java

package com.xbj.dao;

/**

• @Author:晓宇码匠

• @Date：2019/6/15 0015

*/

public interface UserDao {

void addUser();

void delUser();

}

UserDaoImpl.java

package com.xbj.dao.impl;

import com.xbj.dao.UserDao;

import org.junit.runner.RunWith;

import org.springframework.stereotype.Repository;

import org.springframework.stereotype.Service;

/**

• @Author:晓宇码匠

• @Date：2019/6/15 0015

*/

@Repository

public class UserDaoImpl implements UserDao {

public void addUser() {

System.out.println("addUser");

}

public void delUser() {

System.out.println("delUser");

}

//定义初始化方法

public void myInit(){

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

}

//定义销毁方法

public void dest(){

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

}

}

UserService.java

package com.xbj.service;

/**

• @Author:晓宇码匠

• @Date：2019/6/15 0015

*/

public interface UserService {

void addUser();

void delUser();

}

UserServiceImpl.java

package com.xbj.service.impl;

import com.xbj.dao.UserDao;

import com.xbj.service.UserService;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

/**

• @Author:晓宇码匠

• @Date：2019/6/15 0015

*/

@Service

public class UserServiceImpl implements UserService {

@Autowired

private UserDao userDao;

public void addUser() {

userDao.addUser();

}

public void delUser() {

userDao.delUser();

}

}

MyAdvices.java

package com.xbj;

import org.aspectj.lang.JoinPoint;

import org.aspectj.lang.ProceedingJoinPoint;

import org.springframework.stereotype.Component;

/**

• @Author:晓宇码匠

• @Date：2019/6/15 0015

*/

/*

• 注意类的包名

• */

@Component

public class MyAdvices {

//前置通知

public void before(JoinPoint joinpoint){

System.out.println("前置通知");

}

//正常放回通知

public void afterRunturn(JoinPoint joinpoint){

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