Question

我试图从雅虎财经中传输一些市场数据。反序列化json流并将其写入控制台时遇到了一些麻烦。

我已经经历了几个堆栈溢出问题，试图将某些东西放在一起。

我不确定我是否将正确的代码组合在一起，因为我在将结果写入控制台时也遇到了问题。

来自雅虎的我的json数据看起来像这样：

{
   "ResultSet":{
      "Query":"genmab",
      "Result":[
         {
            "symbol":"GNMSF",
            "name":"Genmab A/S",
            "exch":"PNK",
            "type":"S",
            "exchDisp":"OTC Markets",
            "typeDisp":"Equity"
         },
         {
            "symbol":"GE9.F",
            "name":"Genmab A/S",
            "exch":"FRA",
            "type":"S",
            "exchDisp":"Frankfurt",
            "typeDisp":"Equity"
         },
         {
            "symbol":"GEN.F",
            "name":"GENMAB AS  DK 1",
            "exch":"FRA",
            "type":"S",
            "exchDisp":"Frankfurt",
            "typeDisp":"Equity"
         },
         {
            "symbol":"GE9.BE",
            "name":"GENMAB AS  DK 1",
            "exch":"BER",
            "type":"S",
            "exchDisp":"Berlin",
            "typeDisp":"Equity"
         },
         {
            "symbol":"GE9.SG",
            "name":"GENMAB AS Navne Aktier DK 1",
            "exch":"STU",
            "type":"S",
            "exchDisp":"Stuttgart",
            "typeDisp":"Equity"
         },
         {
            "symbol":"GEN.CO",
            "name":"Genmab A/S",
            "exch":"CPH",
            "type":"S",
            "exchDisp":"Copenhagen",
            "typeDisp":"Equity"
         },
         {
            "symbol":"GEN.SG",
            "name":"GENMAB AS Navne Aktier DK 1",
            "exch":"STU",
            "type":"S",
            "exchDisp":"Stuttgart",
            "typeDisp":"Equity"
         },
         {
            "symbol":"GMXAY",
            "name":"Genmab A/S",
            "exch":"PNK",
            "type":"S",
            "exchDisp":"OTC Markets",
            "typeDisp":"Equity"
         },
         {
            "symbol":"GE9.DU",
            "name":"GENMAB AS  DK 1",
            "exch":"DUS",
            "type":"S",
            "exchDisp":"Dusseldorf Stock Exchange",
            "typeDisp":"Equity"
         },
         {
            "symbol":"0MGB.IL",
            "name":"GENMAB A/S GENMAB ORD SHS",
            "exch":"IOB",
            "type":"S",
            "exchDisp":"International Orderbook - London",
            "typeDisp":"Equity"
         }
      ]
   }
}

我提供的代码应该创建一个数据对象列表：

using System.Web.Script.Serialization;

public class DataObject
{
    public string symbol { get; set; }
    public string name { get; set; }
    public string exch { get; set; }
    public string type { get; set; }
    public string exchDisp { get; set; }
    public string typeDisp { get; set; }

}

public class RootObject
{
    public DataObject[] resultSet { get; set; }
}

using (WebClient web = new WebClient())
        {
            string _url = "http://d.yimg.com/aq/autoc?query=genmab&region=CO&lang=en-US";

            var search = web.DownloadString(_url);

            JavaScriptSerializer serializer = new JavaScriptSerializer();
            List<RootObject> oRootObject = serializer.Deserialize<List<RootObject>>(search);

然后我想将不同的数据写入控制台

foreach (var item in oRootObject)
            {
                Console.WriteLine(oRootObject.???.Value.name);
            }

我已尝试DeBug流程但我无法看到任何数据进入对象列表。

由于弗莱明

Answer 1

格式化JSON之后，我可以看到你的类没有完全映射到你的JSON

我使用了一个非常方便的工具 - http://json2csharp.com来创建映射到json的类：

public class Result
{
    public string symbol { get; set; }
    public string name { get; set; }
    public string exch { get; set; }
    public string type { get; set; }
    public string exchDisp { get; set; }
    public string typeDisp { get; set; }
}

public class ResultSet
{
    public string Query { get; set; }
    public List<Result> Result { get; set; }
}

public class RootObject
{
    public ResultSet ResultSet { get; set; }
}

然后你可以像以前那样做：

RootObject oRootObject = serializer.Deserialize<RootObject>(search);

内部oRootObject是另一个对象 - ResultSet
内部ResultSet是Result列表 - 这就是您想要迭代的内容你需要做这样的事情：

foreach (var item in oRootObject.ResultSet.Result)
{
    Console.WriteLine(item.name);
}

将JSON字符串反序列化为对象列表并写入值控制台

1 个答案: