400错误的请求-REST JSON c＃

Question

I've created a C# WCF project, when I'm testing it using POSTMAN or Fiddler. I've received an error: "400 Bad Request". Also I've created an C# windows project to test, it is the same result as well. Here's my WCF Project.

[ServiceContract]
public interface IService1
{

    [OperationContract]
    [WebInvoke(Method = "POST",
        ResponseFormat = WebMessageFormat.Json,
        RequestFormat = WebMessageFormat.Json,
        BodyStyle = WebMessageBodyStyle.Wrapped,
        UriTemplate = "api/createpr.json")]
    PRApplication AddPR(RequestData rData);

}

I'm using this code when testing.

            try
        {
            var httpWebRequest = (HttpWebRequest)WebRequest.Create("http://localhost/WEB_Service_B1/Service1.svc/api/createpr.json");
            httpWebRequest.ContentType = "application/json; charset=utf-8";
            httpWebRequest.Method = "POST";

            using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
            {
                string json = "{\"Test\"}";

                streamWriter.Write(json);
                streamWriter.Flush();
                streamWriter.Close();
            }

            var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
            using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
            {
                var result = streamReader.ReadToEnd();
            }
        }
        catch (Exception err)
        {
            MessageBox.Show(err.Message);
        }

Is there any problem also in my Web.config?

 <?xml version="1.0"?> <configuration> <system.web> <compilation debug="true" targetFramework="4.0" /> <authentication mode="Windows" /> <pages controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID"/> </system.web> <system.webServer> <directoryBrowse enabled="true"/> </system.webServer> <system.serviceModel> <behaviors> <serviceBehaviors> <behavior name="WS_B1.Service1Behavior"> <serviceMetadata httpGetEnabled="true" /> <serviceDebug includeExceptionDetailInFaults="false" /> </behavior> </serviceBehaviors> <endpointBehaviors> <behavior name="web"> <webHttp/> </behavior> </endpointBehaviors> </behaviors> <services> <service name="WS_B1.Service1" behaviorConfiguration="WS_B1.Service1Behavior"> <endpoint address="" binding="webHttpBinding" contract="WS_B1.IService1" behaviorConfiguration="web"> <identity> <dns value="localhost"/> </identity> </endpoint> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/> </service> </services> </system.serviceModel> </configuration> 

Answer 1

BodyStyle = WebMessageBodyStyle.Wrapped

This means the request needs to be a full json object. Try with the following request body:

string json = "{\"rData\": {\"PropertyName\": \"Test\"}}";

Where PropertyName is a public property of RequestData class of string type.