反序列化可以是数组或单个项目的JSON [英] Deserialize JSON that could be an array or a single item

问题描述

我正在使用第三方提供的API，该API从同一个端点返回不同的JSON结果，具体取决于有多少结果.如果只有一个结果，则响应为:

I am using an API from a 3rd-party that returns different JSON results from the same endpoint depending on how many results there are. If there is a single result the response is:

{
  "data": {
  ...
  },
  "metadata": {
  ...
  }
}

但是，如果结果有多个，则响应为:

However if the result has more than one the response is:

{
    "items": [{
        "data": {...},
        "metadata": {...}
    }, {
        "data": {...},
        "metadata": {...}
    }],
    "metadata": {...}
}

我正在使用C#和Json.Net，无法解决如何动态处理此混合响应的问题.是否可以通过Json.net反序列化这些响应?

I'm using C# and Json.Net and can't work out how to dynamically handle this mixed response. Is there a way to deserialize these responses with Json.net?

推荐答案

JSON.net具有与JObject相关的类，这些类在本质上具有更少的刚性和更高的动态性，非常方便.这使您能够(例如):

JSON.net has the JObject related classes that are handy for being a little less rigid and a bit more dynamic in nature. This allows you to (for instance):

var item = JObject.Parse(jsonText);
var hasItems = item.Properties().Any(p => p.Name == "items");
if(hasItems)
{
    var items = item["items"].Select(t => t.ToObject<SomeClass>());
}
else
{
    var sc = item.ToObject<SomeClass>();
}

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