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我想反序列化以下字符串：

YAHOO.Finance.SymbolSuggest.ssCallback({"ResultSet":{"Query":"google","Result":[{"symbol":"GOOG","name": "Google Inc.","exch": "NMS","type": "S","exchDisp":"NASDAQ","typeDisp":"Equity"},{"symbol":"GGQ1.DE","name": "GOOGLE-A","exch": "GER","type": "S","exchDisp":"XETRA","typeDisp":"Equity"}]}})

我用 WebClient 下载的。但在我可以反序列化之前，我需要在最后删除“YAHOO.Finance.SymbolSuggest.ssCallback(”和“)”：

// get response
WebResponse response = request.EndGetResponse(result);
Stream stream = response.GetResponseStream();

// convert to string
StreamReader reader = new StreamReader(stream);
string output = reader.ReadToEnd();
// cut string
output = output.Substring(39, output.Length - 40);
// convert back to stream
MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(output));

所以，我得到的响应是一个流。我将该流转换为字符串，更改字符串，然后将字符串转换回流。接下来，我尝试反序列化：

// parse json
System.Runtime.Serialization.Json.DataContractJsonSerializer rootSer = new System.Runtime.Serialization.Json.DataContractJsonSerializer(typeof(RootObject));

// get root object
RootObject root = (RootObject)rootSer.ReadObject(ms);

// add to listbox
foreach (Result res in root.ResultSet.Result)
{
    Dispatcher.BeginInvoke(() => ResultList.Add(res));
}

问题是我在 foreach 中得到了一个 nullpointexeption ......我的课程是这样的：

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; }
}
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1 回答 1

1

您可以使用正则表达式从 jsonp 中提取 json

output = Regex.Match(output, @".+?\((.+?)\)").Groups[1].Value
于 2013-08-04T17:40:56.180 回答