AOP(面向切面编程)基于注解方式配置

 不会注解的小伙伴看这里哦：Spring常用注解！！！-CSDN博客

pom.xml

 
        
            org.springframework
            spring-context
            6.0.12
        
        
            org.springframework
            spring-aspects
            5.1.8.RELEASE
        
        
            org.slf4j
            slf4j-log4j12
            1.7.19
        
    

UserDaoImpl:

package com.by.dao;

import org.springframework.stereotype.Repository;

@Repository
public class UserDaoImpl implements UserDao {

    @Override
    public void addUser(){
        System.out.println("insert into tb_user......");
    }
}

UserServiceImpl:

package com.by.service;

import com.by.dao.UserDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private UserDao userDao;

    @Override
    public void addUser(){
        userDao.addUser();
        //System.out.println(8/0);
    }
}

MyLogActive:(增强类)

/*
 * Copyright (c) 2020, 2024,  All rights reserved.
 *
 */
package com.by.advice;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.stereotype.Component;

/**
 * 
Project: Spring - MyLogAdvice
 * 
Powered by scl On 2024-01-05 15:04:11
 * 
描述：

 *
 * @author 孙臣龙 [[email protected]]
 * @version 1.0
 * @since 17
 */
@Component
@Aspect
public class MyLogAdvice {
    @Before("execution(* com.by.service.*.*(..))")
    public void before() {
        System.out.println("前置通知、。、");
    }

    @After("execution(* com.by.service.*.*(..))")
    public void after() {
        System.out.println("最终通知、、、");
    }
    @AfterReturning("execution(* com.by.service.*.*(..))")
    public void afterReturn(){
        System.out.println("后置通知");
    }
    @AfterThrowing("execution(* com.by.service.*.*(..))")
    public void afterThrowing(){
        System.out.println("异常通知");
    }
    @Around("execution(* com.by.service.*.*(..))")
    public void around(ProceedingJoinPoint joinPoint) {
        try {
            System.out.println("前环绕通知。。。");
            joinPoint.proceed();
            System.out.println("后环绕通知。。。");
        } catch (Throwable e) {
            throw new RuntimeException(e);
        }
    }
}

applicationContext.xml:

测试：

/*
 * Copyright (c) 2020, 2024,  All rights reserved.
 *
 */
package com.by.web;

import com.by.service.UserService;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * 
Project: Spring - Client
 * 
Powered by scl On 2024-01-05 15:01:34
 * 
描述：

 *
 * @author 孙臣龙 [[email protected]]
 * @version 1.0
 * @since 17
 */
public class Client {
    public static void main(String[] args) {
        ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserService userService = applicationContext.getBean("userServiceImpl", UserService.class);
        System.out.println(userService);
        userService.addUser();
    }
}

结果展示：