将 JSON 反序列化为引发异常的 c# 对象

Question

你能帮我把下面的JSON反序列化成c#吗。

[
  {
    "detectedLanguage": {
      "language": "en",
      "score": 10.0
    },
    "translations": [
      {
        "text": "",
        "to": "da"
      },
      {
        "text": "",
        "to": "da"
      }
    ]
  }
]

我使用了以下 c# 类进行反序列化，但出现异常。

public class DetectedLanguage
{
    public string language { get; set; }
    public int score { get; set; }
}

public class Translation
{
    public string text { get; set; }
    public string to { get; set; }
}

public class RootObject
{
    public DetectedLanguage detectedLanguage { get; set; }
    public List<Translation> translations { get; set; }
}

我的反序列化代码是：

var response = client.SendAsync(request).Result;
var jsonResponse = response.Content.ReadAsStringAsync().Result;
var result = JsonConvert.DeserializeObject<RootObject>(jsonResponse);

异常

Cannot deserialize the current JSON array (e.g. [1,2,3]) into type 'RootObject' because the type requires a JSON object (e.g. {"name":"value"}) to deserialize correctly. To fix this error either change the JSON to a JSON object (e.g. {"name":"value"}) or change the deserialized type to an array or a type that implements a collection interface (e.g. ICollection, IList) like List that can be deserialized from a JSON array. JsonArrayAttribute can also be added to the type to force it to deserialize from a JSON array. Path '', line 1, position 1.

Answer 1

编辑为完整答案：

using Newtonsoft.Json;

class Program
{
    public partial class RootObject
    {
        [JsonProperty("detectedLanguage")]
        public DetectedLanguage DetectedLanguage { get; set; }

        [JsonProperty("translations")]
        public Translation[] Translations { get; set; }
    }

    public partial class DetectedLanguage
    {
        [JsonProperty("language")]
        public string Language { get; set; }

        [JsonProperty("score")]
        public long Score { get; set; }
    }

    public partial class Translation
    {
        [JsonProperty("text")]
        public string Text { get; set; }

        [JsonProperty("to")]
        public string To { get; set; }
    }

    public partial class RootObject
    {
        public static RootObject[] FromJson(string jsonresponse) => JsonConvert.DeserializeObject<RootObject[]>(jsonresponse);
    }

    static void Main(string[] args)
    {
        var response = client.SendAsync(request).Result;
        var jsonResponse = response.Content.ReadAsStringAsync().Result;
        var result = RootObject.FromJson(jsonResponse);
        System.Console.WriteLine(result[0].DetectedLanguage.Language); //outputs "en"
    }
}

Answer 2

score 属性有时持有浮点值，但在我的 c# class 中，有数据类型 int 导致异常。在@Ivan Salo的评论之前我没有注意到。将数据类型 int 更改为 float 修复了我的 issue.I 也使用 List 反序列化 @ 建议的 JSON Jon Skeet 在评论区。

public class DetectedLanguage
{
    public string language { get; set; }
    public float score { get; set; }
}

将 JSON 反序列化为引发异常的 c# 对象

Deserialize JSON to c# object raising an exception

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