Javascript 准备要在WCF服务中传递的Json字符串时出现问题。

我试图在javascript应用程序和WCF服务之间进行通信。我创建的WCF服务提供以下方法：

    [OperationContract]
    [WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.Wrapped, RequestFormat = WebMessageFormat.Json, UriTemplate = "/ExportToXml")]
    void ExportToXml(List<Span> spans, List<Detection> detections);

    [DataContract]
    public class Detection
    {
       [DataMember]
       public int TID { get; set; }

       [DataMember]
       public double Longitude { get; set; }

       [DataMember]
       public double Latitude { get; set; }

       [DataMember]
       public double Height { get; set; }

       [DataMember]
       public int SN { get; set; }

       [DataMember]
       public string TLine_Name { get; set; }
  }

  [DataContract]
  public class Span
  {
       [DataMember]
       public int SN { get; set; }

       [DataMember]
       public double Longitude { get; set; }

       [DataMember]
       public double Latitude { get; set; }

       [DataMember]
       public string TLine_Name { get; set; }
   }

---

服务不喜欢上面的json输入。在这件事上的任何帮助都是非常感谢的

我可以将JSON对象发送到我自己机器上运行的服务。因此，问题不在于发送到服务的JSON对象的格式。你还有一个问题。关于客户机的更多细节可能有助于解决问题

我知道您的客户端是一个JavaScript应用程序，但下面是我的C#客户端，它成功地将JSON对象发送到服务：

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://localhost:9001/WCFServices/RestfulService/ExportToXml");
request.ContentType = "text/json";
request.Method = "POST";
using (var streamWriter = new StreamWriter(request.GetRequestStream()))
{
    string json = @"{ ""spans"": " + 
        @"[{ ""SN"": 1, ""Longitude"": 1000000,""Latitude"": 1000000,""TLine_Name"": ""Circuit Test 1""}, " +
        @"{""SN"": 2, ""Longitude"": 2000000, ""Latitude"": 2000000, ""TLine_Name"": ""Circuit Test 2"" }]," + 
        @"""detections"": " +
        @"[{ ""TID"": 1, ""Longitude"": 1000000, ""Latitude"": 1000000, ""Height"": 15,""SN"": 1, ""TLine_Name"": ""Circuit Test 1"" }, " + 
        @"{ ""TID"": 2, ""Longitude"": 1000000, ""Latitude"": 1000000, ""Height"": 12, ""SN"": 1, ""TLine_Name"": ""Circuit Test 1"" }, " +
        @"{ ""TID"": 3, ""Longitude"": 1000000, ""Latitude"": 1000000, ""Height"": 14, ""SN"": 1, ""TLine_Name"": ""Circuit Test 1"" }, " +
        @"{ ""TID"": 4, ""Longitude"": 1000000, ""Latitude"": 1000000, ""Height"": 10, ""SN"": 2, ""TLine_Name"": ""Circuit Test 2"" }, " +
        @"{ ""TID"": 5, ""Longitude"": 1000000, ""Latitude"": 1000000, ""Height"": 8, ""SN"": 1, ""TLine_Name"": ""Circuit Test 2"" }] }";
   streamWriter.Write(json);
}
WebResponse ws = request.GetResponse();
Encoding enc = System.Text.Encoding.GetEncoding(1252);
StreamReader responseStream = new StreamReader(ws.GetResponseStream());
string response = responseStream.ReadToEnd();
responseStream.Close();

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://localhost:9001/WCFServices/RestfulService/ExportToXml");
request.ContentType = "text/json";
request.Method = "POST";
using (var streamWriter = new StreamWriter(request.GetRequestStream()))
{
    string json = @"{ ""spans"": " + 
        @"[{ ""SN"": 1, ""Longitude"": 1000000,""Latitude"": 1000000,""TLine_Name"": ""Circuit Test 1""}, " +
        @"{""SN"": 2, ""Longitude"": 2000000, ""Latitude"": 2000000, ""TLine_Name"": ""Circuit Test 2"" }]," + 
        @"""detections"": " +
        @"[{ ""TID"": 1, ""Longitude"": 1000000, ""Latitude"": 1000000, ""Height"": 15,""SN"": 1, ""TLine_Name"": ""Circuit Test 1"" }, " + 
        @"{ ""TID"": 2, ""Longitude"": 1000000, ""Latitude"": 1000000, ""Height"": 12, ""SN"": 1, ""TLine_Name"": ""Circuit Test 1"" }, " +
        @"{ ""TID"": 3, ""Longitude"": 1000000, ""Latitude"": 1000000, ""Height"": 14, ""SN"": 1, ""TLine_Name"": ""Circuit Test 1"" }, " +
        @"{ ""TID"": 4, ""Longitude"": 1000000, ""Latitude"": 1000000, ""Height"": 10, ""SN"": 2, ""TLine_Name"": ""Circuit Test 2"" }, " +
        @"{ ""TID"": 5, ""Longitude"": 1000000, ""Latitude"": 1000000, ""Height"": 8, ""SN"": 1, ""TLine_Name"": ""Circuit Test 2"" }] }";
   streamWriter.Write(json);
}
WebResponse ws = request.GetResponse();
Encoding enc = System.Text.Encoding.GetEncoding(1252);
StreamReader responseStream = new StreamReader(ws.GetResponseStream());
string response = responseStream.ReadToEnd();
responseStream.Close();