Retrofit 2 使用动态键序列化 JSON 结果 [英] Retrofit 2 Serializing JSON Result with dynamic keys

问题描述

我有一个 api，它返回的数据结构类似于:

I have an api that returns the data with a structure similar to this:

{
   "1": {
        "url":"http://www.test.com",
        "count":2
   },
   "3": {
        "url":"http://www.test.com",
        "count":12
   },
   "16": {
        "url":"http://www.test.com",
        "count":42
   }
}

名字就是id.不时变化，所以不知道关键.

The names are the id. It changes from time to time, so I don't know the keys.

那我如何序列化它?

推荐答案

我认为您必须使用转换器(GSON 转换器或 Jackson 转换器)并使用 TypeAdapter 解析其中的 JSON 答案.

I think you have to use a converter (GSON converter or Jackson converter) and parse JSON answer in it with TypeAdapter.

private static final Gson GSON = new GsonBuilder()
            .registerTypeAdapter(ApiEntity.class, new ApiEntityAdapter())
            .create();

private static final Retrofit RETROFIT = new Retrofit.Builder()
            ...
            .addConverterFactory(GsonConverterFactory.create(GSON))
            .build();

关于 TypeAdapter，你可以阅读这里

About TypeAdapter you can read here

但是如果你可以改变api答案，你最好构建一个这样的结构

But if you can change api answer, it will be better for you to build a structure like this

[ {"id":1, "url":"http://www.test.com", "count":2},
  {"id":3, "url":"http://www.test.com", "count":12}, 
...]

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