如何使用改进2.3.0解析json对象

Question

我们的团队决定使用Retrofit2，我正在对这个库进行一些初步研究，但我是Retrofit的新手。如何解析下面的Json？

    {
    "main": {
    "totalResults": "500",
    "libelleCategory": "Véhilcule",
    "libelleSubCategory": "Mots et Vélos",
    "idCategory": "1",
    "idSubCategory": "3",
    "row": [
       {
            "id": "66888",
            "shortURL": "https://www.testimage.com",
            "title": "Moto - HONDA - 2007",
            "text": "Pan lorem ipsum test test c'est un test",
            "img": "https://www.test.image.com",
           "price": "6 200",
           "datePublish": "05/05/2018",
           "nbPhotos": "3",
           "address": "75001 Paris"
       },
       {
           "id": "66889",
           "shortURL": "https://www.testimage.com",
           "title": "Moto  - 2018",
           "text": "Pan lorem ipsum test test c'est un test",
           "img": "https://www.test.image.com",
           "price": "9 500",
           "datePublish": "05/05/2018",
           "nbPhotos": "5",
           "address": "75001 Paris"
       }
     ]
  }
}

提前致谢

Answer 1

初始化API时，您必须添加JSON转换器。

我最喜欢的是杰克逊：

1. 添加依赖项：com.squareup.retrofit:converter-jackson

2. 设置转换器以进行改造

   Retrofit retrofit = new Retrofit.Builder()
   .baseUrl("https://your.domain")
   .addConverterFactory(JacksonConverterFactory.create()) // In real app, you should provide a preconfigured ObjectMapper for better performance
   .build();
   

修改

示例：

创建与JSON匹配的模型：

public class YourResponse {
    private Detail main; // This will match "main": {}

    public static final class Detail {
       private String totalResults; // This will match "totalResults": ...
       private String libelleCategory;
       private String libelleSubCategory;
       ... bla bla....
       ... your getter/setter method....
    }
    ... your getter/setter method....
}

在API类中使用它：

public interface SampleApi {

  @Get("/your/path/to/get")
  Call<YourResponse> getResponse();
}

初始化您的API：

SampleApi api = new Retrofit.Builder()
                    .baseUrl("https://your.domain")
                    .addConverterFactory(JacksonConverterFactory.create()) // In real app, you should provide a preconfigured ObjectMapper for better performance
                    .build()
                    .create(SampleApi.class);

致电您的API：

Response<YourResponse> serverResponse = api.getResponse().execute();
if (serverResponse.isSuccessful()) {
  YourResponse = serverResponse.body();
}