优秀开源（7）MapStruct和BeanUtils

序言

Mapstruct与BeanUtils之间的区别，并解释为什么Mapstruct更适合Java对象映射。

BeanUtils

Mapstruct

1.如何使用新建一个springboot项目

2.源码分析

一步一步展示出来如何实现的

D:\Java\MyGit\oa1\target\generated-sources\annotations\com\bitauto\oa\copy

UserMapperImpl.java

package com.bitauto.oa.copy;

import javax.annotation.Generated;

@Generated(
    value = "org.mapstruct.ap.MappingProcessor",
    date = "2024-07-18T00:11:57+0800",
    comments = "version: 1.4.2.Final, compiler: javac, environment: Java 1.8.0_192 (Oracle Corporation)"
)
public class UserMapperImpl implements UserMapper {

    @Override
    public UserDto toDTO(User user) {
        if ( user == null ) {
            return null;
        }

        UserDto userDto = new UserDto();

        userDto.setUsername( user.getUsername() );
        userDto.setIconUrl( user.getIconUrl() );

        return userDto;
    }
}

问题

BeanUtils和Mapstruct属于什么拷贝？

MapStruct 中是创建新的对象，也就是深拷贝。

就这个原理，自己玩一套别的

https://www.cnblogs.com/doflamingo/p/13623867.html

https://www.cnblogs.com/xd502djj/p/16567484.html

https://blog.csdn.net/xiyang_1990/article/details/129944240?spm=1001.2101.3001.6650.5&utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7EBlogCommendFromBaidu%7ERate-5-129944240-blog-135021929.235%5Ev43%5Epc_blog_bottom_relevance_base7&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7EBlogCommendFromBaidu%7ERate-5-129944240-blog-135021929.235%5Ev43%5Epc_blog_bottom_relevance_base7&utm_relevant_index=10

https://mp.weixin.qq.com/s?__biz=MzAxNDEwNjk5OQ==&mid=2650472865&idx=1&sn=d52936c029a49d13a1fb1d6edb463afc&chksm=8397c9b9b4e040af92a372cd0b5c2f08905b21ffb8ff6e5143ff08610856c9fef4b6233cbfdf&scene=21#wechat_redirect

https://blog.csdn.net/qq_32954567/article/details/135021929