Question

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"}]}})

我使用WebClient下载。但在我反序列化之前，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，我得到的回应是一个流。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; }
}

Answer 1

您可以使用Regex从jsonp中提取json

output = Regex.Match(output, @".+?\((.+?)\)").Groups[1].Value

更改响应字符串后JSON反序列化无效

1 个答案: