2016-07-12 114 views
1

前言:我知道JSON.NET,但我不能使用它(客户端机器)。解析唯一命名的嵌套JSON

我需要解析由http://api.fixer.io/latest?base=USD返回的JSON为3列,日期,currencyCode和速率。问题在于嵌套的“费率”部分。货币代码是第一个元素的名称,这意味着我无法使用“键”和“值”属性。我知道的唯一方法是硬编码每个可能的货币代码,这是我目前在下面的代码中。我希望能够使用键/值对同时提取代码/速率。

的JSON:

{"base":"USD", 
"date":"2016-07-12", 
"rates": { 
    "AUD":1.3101, 
    "BGN":1.7633, 
    "BRL":3.2829, 
    "CAD":1.3029, 
    etc....} 
} 

到目前为止我的代码:

static void Main(string[] args) 
    { 
     var curDate = "2001-01-01"; 
     var URL = @"http://api.fixer.io/" + curDate + "?base=USD"; 
     Console.WriteLine(URL); 
     //WebRequest wrGetURL = WebRequest.Create(URL); 
     var text = ""; 
     //wrGetURL.ContentType = "application/json; charset=utf-8"; 

     HttpWebRequest httpWebRequest = System.Net.WebRequest.Create(URL) as HttpWebRequest; 

     using (HttpWebResponse httpWebResponse = httpWebRequest.GetResponse() as HttpWebResponse) 
     { 
      if (httpWebResponse.StatusCode != HttpStatusCode.OK) 
      { 
       throw new Exception(string.Format("Server error (HTTP {0}: {1}).", 
        httpWebResponse.StatusCode, httpWebResponse.StatusDescription)); 
      } 

      Stream stream = httpWebResponse.GetResponseStream(); 

      DataContractJsonSerializer dataContractJsonSerializer = new DataContractJsonSerializer(typeof(JSONRead)); 
      JSONRead objResponse = (JSONRead)dataContractJsonSerializer.ReadObject(stream); 

      Console.WriteLine(objResponse.rates.AUD); 
     } 
     Console.ReadLine(); 

    } 

    [DataContract] 
    public class JSONRead 
    { 
     [DataMember(Name = "date")] 
     public string date { get; set; } 

     [DataMember(Name = "rates")] 
     public Rates rates { get; set; } 

     [DataMember(Name = "base")] 
     public string bases { get; set; } 

    } 

    [DataContract] 
    public class Rates 
    { 
     [DataMember(Name = "AUD")] 
     public string AUD { get; set; } 

     //[DataMember(Name = "key")] 
     //public string key { get; set; } 

     //[DataMember(Name = "value")] 
     //public string value { get; set; } 
    } 

我试图返回:

Date  Code Rate 
2016-07-12 AUD 1.3101 
2016-07-12 GBN 1.7633 
etc... 
+2

定义率作为字典 – Plutonix

+0

@Plutonix原谅无知,但如何看待代码?我看到了使用列表的其他示例,但没有从API调用中返回任何内容。 – TTeeple

回答

0

我不得不使用DataContractJsonSerializerSettings并设置UseSimpleDictionaryFormattrue。然后它将嵌套对象正确读入Dictionary对象。感谢@Plutonix的帮助。