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

<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>day2</groupId>

    <artifactId>day2</artifactId>

    <version>1.0-SNAPSHOT</version>

    <dependencies>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-core</artifactId>

            <version>4.1.4.RELEASE</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-context</artifactId>

            <version>4.1.4.RELEASE</version>

        </dependency>

        <dependency>

            <groupId>junit</groupId>

            <artifactId>junit</artifactId>

            <version>4.12</version>

        </dependency>

        <dependency>

            <groupId>org.aspectj</groupId>

            <artifactId>aspectjweaver</artifactId>

            <version>1.8.13</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-test</artifactId>

            <version>4.1.6.RELEASE</version>

        </dependency>

    </dependencies>

</project>

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

<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd ">

    <!-- 准备工作: 导入aop(约束)命名空间 -->

    <!-- 1.配置目标对象 -->

    <bean name="userService" class="dyh.aop.service.UserServiceImpl" ></bean>

    <!-- 2.配置通知对象 -->

    <bean name="myAdvice" class="dyh.aop.springaop1.MyAdvice" ></bean>

    <!-- 3.开启使用注解完成织入 -->

    <aop:aspectj-autoproxy></aop:aspectj-autoproxy>

</beans>

public interface UserService {

    void save();

    void delete();

    void update();

    void find();

}

public class UserServiceImpl implements UserService {

    public void save() {

        System.out.println("保存用户!");

        //int i = 1/0;

    }

    public void delete() {

        System.out.println("删除用户!");

    }

    public void update() {

        System.out.println("更新用户!");

    }

    public void find() {

        System.out.println("查找用户!");

    }

}

import org.aspectj.lang.ProceedingJoinPoint;

import org.aspectj.lang.annotation.*;

//通知类

@Aspect

public class MyAdvice {

    @Pointcut("execution(* dyh.aop.service.*ServiceImpl.*(..))")

    public void pc(){}

    //前置通知

    //指定该方法是前置通知,并制定切入点

    @Before("MyAdvice.pc()")

    public void before(){

        System.out.println("这是前置通知!!");

    }

    //后置通知

    @AfterReturning("execution(* dyh.aop.service.*ServiceImpl.*(..))")

    public void afterReturning(){

        System.out.println("这是后置通知(如果出现异常不会调用)!!");

    }

    //环绕通知

    @Around("execution(* dyh.aop.service.*ServiceImpl.*(..))")

    public Object around(ProceedingJoinPoint pjp) throws Throwable {

        System.out.println("这是环绕通知之前的部分!!");

        Object proceed = pjp.proceed();//调用目标方法

        System.out.println("这是环绕通知之后的部分!!");

        return proceed;

    }

    //异常通知

    @AfterThrowing("execution(* dyh.aop.service.*ServiceImpl.*(..))")

    public void afterException(){

        System.out.println("出事啦!出现异常了!!");

    }

    //后置通知

    @After("execution(* dyh.aop.service.*ServiceImpl.*(..))")

    public void after(){

        System.out.println("这是后置通知(出现异常也会调用)!!");

    }

}

package dyh.aop.springaop1;

import dyh.aop.service.UserService;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.springframework.test.context.ContextConfiguration;

import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import javax.annotation.Resource;

@RunWith(SpringJUnit4ClassRunner.class)

@ContextConfiguration(locations = {"classpath:applicationContextAop.xml"})

public class Demo {

    @Resource(name = "userService")

    private UserService us;

    @Test

    public void funaop(){

        us.save();

    }

}