如何使用改型处理对象列表或单个对象的JSON响应? [英] How to handle JSON response of either a list of objects or a single object using retrofit?

问题描述

我正在使用改造来调用REST服务(不是我的)，该改造要么返回对象列表(如果有多个)，要么返回一个对象列表(如果有).我可以在此处找到类似的问题，但是建议是更改我无法控制的API.我还阅读了

I am calling a REST service (not mine) using retrofit which either returns a list of objects (if there are multiple) or a single object (if one). I was able to find a similar issue here however the suggestion is to change the API which i don't have control of. I also read this thread which seems to be a good approach but is there a way to handle this using Retrofit?

推荐答案

虽然@pirho的答案似乎适用，但我发现了一个适用于我的不同且简单的解决方案.希望它也可以对其他人有所帮助.

While the answer from @pirho seems to be applicable, I found out a different and simple solution which worked for me. Hopefully it may help others as well.

    ObjectMapper mapper = new ObjectMapper();
    mapper.configure(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true);

    Retrofit retrofit = new Retrofit.Builder()
            .baseUrl(baseUrl)
            .addConverterFactory(JacksonConverterFactory.create(mapper))
            .client(okHttpClient)
            .build();

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