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README
Apache-2.0

English | 中文

文档地址:https://kkkele.github.io/easy-translation/#

easy-translation-logo

Easy-Translation

一个配置上非常轻量,使用简单且强大而灵活的字段翻译插件。可以理解为字段自动填充框架,主要作用就是由其他的字段自动映射成所需要的字段。

easy-translation-core

作用场景

任何您想得到,需要值填充,而填充的手段希望简单,优雅的场景,都可以使用Easy-Translation

开发背景

在web开发的过程中,后端程序员经常面临多表查询,然后组装成一个vo类的情况。于是,Easy-Translation应运而生,因为它使用场景灵活,所以不再局限于web开发,任何需要灵活,动态的值填充场景,都可以使用Easy-Translation,它帮助你省略大部分重复的代码,极大的提高了开发效率,而且从某一层面起到了解耦的作用,使得代码的职责更加清晰。

您能从哪里获得值填充(如何获取翻译器进行翻译)

  • 动态方法

    动态方法由对象执行,这就意味着,你可以原原本本的使用代理对象,所有增强方法的手段都会被得到执行,事务(例如:@Transcational),缓存(例如:@Cacheable),或是幂等(Easy-Idempotent提供的**@Idempotent**)注解等等,具有极高的兼容性。

  • 静态方法

    静态方法并不需要执行对象,只要您提供的路径,能扫到该包,就可以成功的执行对应的翻译功能。

  • 枚举类

    是的,Easy-Translation支持您使用枚举当作翻译器,不过需要您在枚举类上额外标注*@TransMapper注解当作翻译的key,@TransValue*当作翻译的值,

    插件会自动为您生成一个方法(底层用map进行了一个存储),从而执行对应的翻译功能。

插件的灵活性

  • 支持多参数翻译:(支持到016个参数。如果您希望由多于16中参数的方法作为翻译器,作者觉得,您可能需要更换代码的写法)

    详情用法请看文档

  • 自选翻译器返回结果的任意属性填充:

    是的,如果您标记了getUserById 方法为翻译器,当翻译器执行后,你可以选择user对象的任意属性进行填充

  • 复用翻译器翻译结果,减少执行方法的消耗:

    如果您需要翻译的字段是同一个翻译器,同一个映射值的执行后的不同属性,那么,插件不会 多次执行,而是会复用结果,以减少时间的消耗。

    例如:你需要在一个vo中填充user的age和name,那么您只需要在@Mapping注解的receive属性进行一个区分即可。

  • 自定义翻译顺序

    例如,您需要的返回对象某些的属性,有一些关联关系,先有a得到b,再用b得到c,你可以通过@Mapping的sort属性和after属性进行一个翻译器执行顺序的排序。

  • 异步组装翻译结果

    不相关的属性当然可以利用异步组装来减少时间消耗。

  • 多线程异步组装自动传递上下文变量

    你可以注册一些上下文变量传递者,来解决异步时上下文变量丢失的问题。

  • 自动解包:如果您的返回对象是list,array,map或是其他您希望进行一个拆除的对象。那么插件会进行一个拆包操作,获取其中的item进行逐个翻译,当然,这个过程仍然可以异步处理

  • 可扩展性极强,具体请看相关文档

    可自定义 翻译器的生产过程,翻译器产生时的前置操作和后置操作

    可自定义 拆包者,选择拆包的结果,需要拆包的对象

  • 开箱即用

    在spring环境下,在启动类或是其他@component等注解上标记@EnableTranslation,即可使用

    在非spring环境下,需要自行手动创建一些全局对象进行维护

快速开始

pom.xml添加依赖

        <dependency>
            <groupId>io.github.kkkele</groupId>
            <artifactId>easy-translation-spring-boot-start</artifactId>
            <version>1.0.0</version> //请自行替换为最新版本
        </dependency>

启动类或其他任意被spring管理的类上,加上@EnableTranslation注解

@SpringBootApplication
@EnableTranslation //可自由选择扫描包的路径
public class EasyTranslationApplication {
    public static void main(String[] args) {
        SpringApplication.run(EasyTranslationApplication.class, args);
    }
}

在方法上打上**@Translator**注解,并自定义该注解的名称

@Data
public class SysUser {

    private Integer userId;

    private String username;

    private String nickName;
}



@Service
public class UserServiceImpl implements UserService {

    @Override
    @Translator("getUser")
    public SysUser getById(Integer id) {
        try {
            Thread.sleep(1);
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
        SysUser sysUser = new SysUser();
        sysUser.setUserId(id);
        sysUser.setUsername("username" + id);
        sysUser.setNickName("nickName" + id);
        return sysUser;
    }
}

在需要翻译的类的字段上,使用@Mapping注解,指定翻译器,和所接收的属性名

@Data
public class Product {

    private Integer productId;

    private String productName;

    private Integer catId;

    private Integer createBy;
}



@Data
public class ProductVo extends Product {

    @Mapping(translator = "getUser", mapper = "createBy",receive = "nickName")
    private String nickName;

    @Mapping(translator = "getUser", mapper = "createBy", receive = "username")
    private String username;

}

在需要翻译的方法上使用**@TranslationExecute**注解,即可自动对执行结果进行翻译填充,不论是map,还是数组,还是list,或是您有其他需求,都可以进行拆包填充

    @Override
    @TranslationExecute
    public ProductVo getDetailById(Integer id) {
        ProductVo productVO = new ProductVo();
        Product byId = getById(id);
        BeanUtil.copyProperties(byId, productVO);
        return productVO;
    }
@Data
public class R<T> {

    int code;

    T data;

    public R(int code, T data) {
        this.code = code;
        this.data = data;
    }

    public static <T> R<T> ok(T data) {
        return new R<>(200, data);
    }

    public static <T> R<T> error(T data) {
        return new R<>(500, data);
    }

    public static <T> R<T> error() {
        return new R<>(500, null);
    }

    public static <T> R<T> ok() {
        return new R<>(200, null);
    }
}    
    @GetMapping("/{id}")
    @TranslationExecute(field = "data")
    public R<ProductVo> getDetailById(@PathVariable Integer id) {
        return R.ok(productService.getDetailById(id));
    }

    @GetMapping("/list")
    @TranslationExecute(field = "data")
    public R<List<ProductVo>> getList() {
        return R.ok(mappingToList(ListUtil.of(1, 2, 3, 4, 4)));
    }

    @GetMapping("/array")
    @TranslationExecute(field = "data")
    public R<ProductVo[]> getArray() {
        return R.ok(mappingToArray(1, 2, 3, 4, 5));
    }

    @GetMapping("/map")
    @TranslationExecute(field = "data")
    public R<Map<Integer, ProductVo>> getMap() {
        return R.ok(mappingToMap(1, 2, 3, 4, 5));
    }

以上就是一个springBoot环境下的一个简单示例

作者联系方式

有问题欢迎提出issue,或是联系本人探讨

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简介

一个配置简单,轻量的java自动填充(翻译)字段框架 展开 收起
Java
Apache-2.0
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