如何使從JSON

Question

一個C＃對象我從web服務的以下響應：

{ 
    "data":{ 
    "foo.hugo.info": { 
     "path": "logon.cgi", 
     "minVersion": 1, 
     "maxVersion": 2 
    }, 
    "foo.Fritz.Task": { 
     "path": "Fritz/process.cgi", 
     "minVersion": 1, 
     "maxVersion": 1 
    } 
    }, 
    "success": true 
} 

必須如何JSON對象模樣反序列化呢？

或者有另一種方法來獲取屬性的值？

Answer 1

隨着JSON.NET庫這是很簡單的：

public class Root 
{ 
    public Dictionary<string, Data> Data { get; set; } 
    public bool Success { get; set; } 
} 

public class Data 
{ 
    public string Path { get; set; } 
    public int MinVersion { get; set; } 
    public int MaxVersion { get; set; } 
} 

然後：

string json = 
@"{ 
    ""data"":{ 
    ""foo.hugo.info"": { 
     ""path"": ""logon.cgi"", 
     ""minVersion"": 1, 
     ""maxVersion"": 2 
    }, 
    ""foo.Fritz.Task"": { 
     ""path"": ""Fritz/process.cgi"", 
     ""minVersion"": 1, 
     ""maxVersion"": 1 
    } 
    }, 
    ""success"": true 
}"; 
Root root = JsonConvert.DeserializeObject<Root>(json); 

在這個例子中我使用了一個Dictionary<string, Data>對象到2個複雜鍵（foo.hugo.info和foo.Fritz.Task），因爲模型它們包含不能在.NET成員中使用的名稱。

Answer 2

看看這個網站：http://json2csharp.com/

粘貼在JSON字符串，它會生成類爲您服務。我通常在JSON.NET中使用這個來反序列化一個根對象的實例。

Answer 3

如果你正在使用VS2012或以上，你可以做到以下幾點：

Edit > Paste Special > Paste JSON As Classes 

---

你的榜樣，這導致：

public class Rootobject 
{ 
    public Data data { get; set; } 
    public bool success { get; set; } 
} 

public class Data 
{ 
    public FooHugoInfo foohugoinfo { get; set; } 
    public FooFritzTask fooFritzTask { get; set; } 
} 

public class FooHugoInfo 
{ 
    public string path { get; set; } 
    public int minVersion { get; set; } 
    public int maxVersion { get; set; } 
} 

public class FooFritzTask 
{ 
    public string path { get; set; } 
    public int minVersion { get; set; } 
    public int maxVersion { get; set; } 
} 

Answer 4

您可以使用DataContractJsonSerializer

[DataContract] 
    public class DetailedData 
    { 
     [DataMember(Name="path")] 
     public string Path { get; set; } 
     [DataMember(Name = "minVersion")] 
     public int MinVersion { get; set; } 
     [DataMember(Name = "maxVersion")] 
     public int MaxVersion { get; set; } 
    } 

    [DataContract] 
    public class Data 
    { 
     [DataMember(Name = "foo.hugo.info")] 
     public DetailedData Info { get; set; } 
     [DataMember(Name = "foo.Fritz.Task")] 
     public DetailedData Task { get; set; } 
    } 

    [DataContract] 
    public class RootObject 
    { 
     [DataMember(Name = "data")] 
     public Data Data { get; set; } 
     [DataMember(Name = "success")] 
     public bool Success { get; set; } 
    } 

    static void Main(string[] args) 
    { 
     string json = "..."; 
     DataContractJsonSerializer js = new DataContractJsonSerializer(typeof(RootObject)); 

     RootObject obj = (RootObject)js.ReadObject(new MemoryStream(Encoding.Unicode.GetBytes(json))); 
     Console.WriteLine(obj.Data.Task.MaxVersion); 
    } 

編輯：同類Info和Task