public List<CoinMarket> GetCoinMarket()
{
List<CoinMarket> coinMarket = new List<CoinMarket>();
var URLWebAPI = "http://190.202.54.19/wsZeus/api/Account/Markets/Get";
try
{
using (var Client = new System.Net.Http.HttpClient())
{
var JSON = Client.GetStringAsync(URLWebAPI);
coinMarket = (List<CoinMarket>)Newtonsoft.Json.JsonConvert.DeserializeObject(JSON.Result);
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(@" ERROR {0}", ex.Message);
}
return coinMarket;
}
投掷,我不知道为什么。看起来序列化部分有问题。但我验证了它。
答案 0 :(得分:1)
您正在错误地使用json反序列化程序。 DeserializeObject
会返回不能投放到List<T>
的自定义对象。这个输出:
Newtonsoft.Json.Linq.JArray
SO20171129.CoinData[]
System.Collections.Generic.List`1[SO20171129.CoinData]
是此代码的结果。
class Program
{
static void Main(string[] args)
{
// returns Newtonsoft.Json.Linq.JArray
var coinMarket = Newtonsoft.Json.JsonConvert.DeserializeObject(File.ReadAllText("get.json"));
Console.WriteLine(coinMarket.GetType());
// returns array of CoinData
var coinMarketTyped = Newtonsoft.Json.JsonConvert.DeserializeObject<CoinData[]>(File.ReadAllText("get.json"));
Console.WriteLine(coinMarketTyped.GetType());
// returns List of CoinData
var coinMarketTyped2 = Newtonsoft.Json.JsonConvert.DeserializeObject<List<CoinData>>(File.ReadAllText("get.json"));
Console.WriteLine(coinMarketTyped2.GetType());
}
}
public class CoinData
{
public string id { get; set; }
public string name { get; set; }
public string symbol { get; set; }
public string rank { get; set; }
public string price_usd { get; set; }
public string price_btc { get; set; }
public string __invalid_name__24h_volume_usd { get; set; }
public string market_cap_usd { get; set; }
public string available_supply { get; set; }
public string total_supply { get; set; }
public string percent_change_1h { get; set; }
public string percent_change_24h { get; set; }
public string percent_change_7d { get; set; }
public string last_updated { get; set; }
}
答案 1 :(得分:0)
我的猜测是你的json结构成员与CoinMarket类成员不匹配。
我要做的是复制json结果并在以下网站上生成相应的CoinMarket类:http://json2csharp.com/
它将为您输出正确的CoinMarket课程。
答案 2 :(得分:0)
public class CoinMarket
{
public string id { get; set; }
public string name { get; set; }
public string symbol { get; set; }
public string rank { get; set; }
public string price_usd { get; set; }
public string price_btc { get; set; }
[JsonProperty("24h_volume_usd")]
public string h_volume_usd { get; set; }
public string market_cap_usd { get; set; }
public string available_supply { get; set; }
public string total_supply { get; set; }
public string percent_change_1h { get; set; }
public string percent_change_24h { get; set; }
public string percent_change_7d { get; set; }
public string last_updated { get; set; }
}
}
这是我的CoinMarket Class