如何在C＃中反序列化json数据 [英] How to deserialize json data in C#

问题描述

我得到以下格式的回复。

I get response in following format.

strTokenNumber

= {code：200，message：授权，数据：{token：1545207965545}}

我正在获得激活

={"code":200,"message":"Authorized","data":{"token":1545207965545}}
I am getting excpetion

Cannot deserialize the current JSON object (e.g. {"name":"value"}) into type 'System.Collections.Generic.List`1[POSInvoiceDetailsIntegration.TokenResult]' because the type requires a JSON array (e.g. [1,2,3]) to deserialize correctly.

在以下声明中：

in following statement:

var userauthenticate = JsonConvert.DeserializeObject<UserAuthenticate>(strTokenNumber);

我的尝试：

What I have tried:

 public class TokenResult
    {
       //[JsonProperty("TokenResult")]
       public string token { get; set; }
    }
public class UserAuthenticate   
    {
        //TokenResult token = new TokenResult();
        public string code { get; set; }
        public string message { get; set; }

        //public Array data { get; set; }
        //public List<string> data { get; set; }
        public List<TokenResult> data { get; set; }
    }

推荐答案

在json中你有data是单个对象，而不是array \ list所以改变你的班级定义;

In the json you have "data" is a single object, not an array\list so change your class definition;

public class UserAuthenticate   
    {
        public string code { get; set; }
        public string message { get; set; }

        public TokenResult data { get; set; }
    }

您显示的JSON与您的类不匹配 - 数据项不是集合，只是单个实例。

如果我把你的JSON和feed送到类生成器： json2csharp - 从json生成c＃类 [< a href =http://json2csharp.com/#target =_ blanktitle =New Window> ^ ]我得到这些：

The JSON you show doesn't match your classes - the "data" item is not a collection, buut a single instance.
If I take your JSON and feed to to a class generator: json2csharp - generate c# classes from json[^] I get these:

public class Data
{
    public long token { get; set; }
}

public class RootObject
{
    public int code { get; set; }
    public string message { get; set; }
    public Data data { get; set; }
}

如果我给你上课一些数据，我得到了我的期望：

If I feed you classes some data, I get what I expect:

UserAuthenticate ua = new UserAuthenticate();
ua.code = "200";
ua.message = "Authorized";
ua.data = new List<TokenResult>();
ua.data.Add(new TokenResult() { token = "1545207965545" });
string json = Newtonsoft.Json.JsonConvert.SerializeObject(ua);

{"code":"200","message":"Authorized","data":[{"token":"1545207965545"}]}

我首先检查你的数据源。

I'd start by checking your data source.

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