C# json 用 Json.NET 解析

Question

我正在使用网络为 Steam 制作好友列表管理工具 API。以下 JSON 由 API 返回：

{
"friendslist": {
    "friends": [
        {
            "steamid": "12345678",
            "relationship": "friend",
            "friend_since": 1290444866
        },
        {
            "steamid": "87654321",
            "relationship": "friend",
            "friend_since": 1421674782
        },
        {
            "steamid": "5287931",
            "relationship": "friend",
            "friend_since": 1418428351
        }
    ]
}

我尝试用这段代码解析它：

public class Friendslist
{
    public IDictionary<int, IDictionary<int, Friend>> friends { get; set; }
}

public class Friend
{
    public uint steamid { get; set; }
    public string relationship { get; set; }
    public uint friend_since { get; set; }
}

        string jsonString;
        Friendslist jsonData;
        WebRequest wr;
        Stream objStream;
        wr = WebRequest.Create(sURL);
        objStream = wr.GetResponse().GetResponseStream();
        StreamReader objReader = new StreamReader(objStream);
        jsonString = objReader.ReadToEnd();
        jsonData = JsonConvert.DeserializeObject<Friendslist>(jsonString);

但是当我用调试器检查时，jsonData 总是空的。

Answer 1

你的模型应该是这样的

public class Friend
{
    public string steamid { get; set; }
    public string relationship { get; set; }
    public int friend_since { get; set; }
}

public class Friendslist
{
    public List<Friend> friends { get; set; }
}

public class RootObject
{
    public Friendslist friendslist { get; set; }
}

现在您可以反序列化为

var root = JsonConvert.DeserializeObject<RootObject>(jsonString);

查看这个有用的网站http://json2csharp.com/

C# json 用 Json.NET 解析

C# json parsing with Json.NET

c#

json

json.net

steam-web-api