问题描述

我在将 Json 字符串反序列化为对象时遇到问题.

I have a problem with deserializing a Json-string to an object.

这是我从网络服务收到的示例 json:

This is a sample json i receive from a webservice:

{
    "GetDataResult":
                 "{
                     "id":1234,
                     "cityname":"New York",
                     "temperature":300,
                  }"
}

我有一个像这样的类 CityData

And I have a class CityData that looks like this

[JsonObject("GetDataResult")]
public class CityData
{
    [JsonProperty("id")]
    public int Id { get; set; }

    [JsonProperty("cityname")]
    public string CityName { get; set; }

    [JsonProperty("temperature")]
    public int Temperature { get; set; }
}

我尝试通过调用 DeserializeObject 方法来反序列化 json

I try to deserialize the json with a call of the method DeserializeObject

var cityData = JsonConvert.DeserializeObject<CityData>(response);

但根元素似乎有问题......

but the root element seems to make problems...

你们知道我该如何解决它，以便我收到一个填写了数据的 CityData 对象吗?

Do you guys know how I can fix it, so that I receive a CityData-object with the data filled in?

推荐答案

json 响应包含一个对象，该对象本身包含一个表示数据结果的 json 字符串.

The json response contains an object that within itself contains a json string representing the data result.

您需要反序列化两次，一次用于响应，一次用于数据结果.

You need to deserialize twice, once for the response and one more for the data result.

var response = JsonConvert.DeserializeObject<JObject>(responseStr);
var dataResult = (string)response["GetDataResult"];
var cityData = JsonConvert.DeserializeObject<CityData>(dataResult);

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