使用Retrofit＆gson

Question

我在映射json时遇到这样的问题：

{
"data": {
    "id": 2, 
    "name": "Litecoin", 
    "symbol": "LTC", 
    "website_slug": "litecoin", 
    "rank": 7, 
    "circulating_supply": 57656657.0, 
    "total_supply": 57656657.0, 
    "max_supply": 84000000.0, 
    "quotes": {
        "USD": {
            "price": 77.9238663379, 
            "volume_24h": 334368162.90084, 
            "market_cap": 4492829637.0, 
            "percent_change_1h": -0.05, 
            "percent_change_24h": -1.5, 
            "percent_change_7d": -9.95
        }, 
        "EUR": {
            "price": 66.6913747769, 
            "volume_24h": 286169995.3231736, 
            "market_cap": 3845201724.0, 
            "percent_change_1h": -0.05, 
            "percent_change_24h": -1.5, 
            "percent_change_7d": -9.95
        }
    }, 
    "last_updated": 1533123370
}, 
"metadata": {
    "timestamp": 1533122956, 
    "error": null
}

}

如您所见；引用对象中的对象名称是动态的，我不知道引用对象中将有多少个对象。我认为服务器应将其放入数组中，但我无法控制API /

其他所有内容都正确映射，只有引号对象的内容为空

我可以用gson和Retrofit映射吗？

我尝试过的：

public class Quotes {
    //region variables
    private Map<String, Fiat> fiatMap;
    //endregion

    //region getters
    public Map<String, Fiat> getFiatMap() {
        return fiatMap;
    }
    //endregion

    //region setters
    public void setFiatMap(Map<String, Fiat> fiatMap) {
        this.fiatMap = fiatMap;
    }
    //endregion
}

我的服务是什么样的：

Retrofit.Builder builder = new Retrofit.Builder()
                .baseUrl(Constants.BASE_URL)
                .client(client)
                .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
                .addConverterFactory(GsonConverterFactory.create());

 Retrofit retrofit = builder.build();
 client = retrofit.create(MyCLient.class)

Answer 1

您可以为该类编写自定义反序列化器。

gson = new GsonBuilder()
                .registerTypeAdapter(Quotes.class, new MyCustomDeserializer())
                .create();

public class MyCustomDeserializer implements JsonDeserializer<Quotes> {

    @Override
    public Quotes deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
         // Your custom deserilizer here
    }
}

然后，您必须将gson设置为改造生成器中的转换器