java jhipster项目中json中实体属性camel case转换为snake case
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Convert entity property camel case to snake case in json in jhipster project
提问by Md. Shougat Hossain
I am working with a project that is generated with jhipster. It is a micro service architecture project.
我正在处理一个用 jhipster 生成的项目。它是一个微服务架构项目。
In my entity class properties are named with camel case. So when I create a rest service it gives me json, where the json property names are as same as the entity properties.
在我的实体类中，属性以驼峰命名。所以当我创建一个休息服务时，它给了我 json，其中 json 属性名称与实体属性相同。
Entity class
实体类
@Entity
@Table(name = "ebook")
@Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
@Document(indexName = "ebook")
public class Ebook implements Serializable {
private Long id;
private String nameBangla;
private String nameEnglish;
Json response
JSON 响应
{
"id": 0,
"nameBangla": "string",
"nameEnglish": "string"
}
I want that my entity property will camel case, But in json response it will snake case. That is I don't want to change my entity class but I want to change my json response like bellow
我希望我的实体属性是驼峰式的，但在 json 响应中它是蛇形的。那是我不想更改我的实体类，但我想更改我的 json 响应，如下所示
{
"id": 0,
"name_bangla": "string",
"name_english": "string"
}
回答by Indivon
You have two possibilities:
你有两种可能：
Explicit naming your properties:
显式命名您的属性：
@JsonProperty("name_bangla")
private String nameBangla;
@JsonProperty("name_english")
private String nameEnglish;
or changing how Hymanson (which is used for de/serialization) works:
或更改 Hymanson（用于反/序列化）的工作方式：
Hymanson has a setting called PropertyNamingStrategy.SNAKE_CASEwhich you can set for the Hymanson objectmapper.
Hymanson 有一个名为的设置PropertyNamingStrategy.SNAKE_CASE，您可以为 Hymanson objectmapper 设置。
So, you need to configure Hymanson for that, e.g. by adding your own object mapper:
因此，您需要为此配置 Hymanson，例如通过添加您自己的对象映射器：
@Configuration
public class HymansonConfiguration {
@Bean
public Hymanson2ObjectMapperBuilder Hymanson2ObjectMapperBuilder() {
return new Hymanson2ObjectMapperBuilder().propertyNamingStrategy(PropertyNamingStrategy.SNAKE_CASE)
}
}
As far as I know, in older version of JHipster, there was already a HymansonConfigurationto configure the JSR310 time module, but was removed later...
据我所知，在旧版本的JHipster中，已经有一个HymansonConfiguration配置JSR310时间模块，但后来被删除了......
Adding this to your application.yml should also work:
将此添加到您的 application.yml 也应该有效：
spring.Hymanson.property-naming-strategy=SNAKE_CASE
回答by Sonique
Also you can use annotation to define naming strategy per class.
您也可以使用注释来定义每个类的命名策略。
Little example in Kotlin:
Kotlin 中的小例子：
@JsonNaming(PropertyNamingStrategy.SnakeCaseStrategy::class)
data class Specialization(val altUrl: String, val altId: Int, val altName: String)
