C#HTTP服务器POST请求正在将正文解析为null

Question

我有我的ServiceContract接口

[ServiceContract]
public interface IService
{
[OperationContract]
[WebInvoke(Method = "POST",
ResponseFormat = WebMessageFormat.Json,
BodyStyle = WebMessageBodyStyle.WrappedRequest,
RequestFormat = WebMessageFormat.Json,
UriTemplate = "print")]
[return: MessageParameter(Name = "Data")]
int Print(PrintOrder orden);
}

服务：

public class Service : IService
{
public int Print(PrintOrder orden)
{
try
{
Console.WriteLine("received order",orden.Body,orden.PrinterName);
return 0;
}
catch (Exception ex)
{
Console.WriteLine(ex.Message,ex.StackTrace);
return 1;
}
}
}

以及DataContract

[DataContract]
public class PrintOrder
{
[DataMember]
public string PrinterName{ get; set; }
[DataMember]
public string Body { get; set; }
}

问题是，每当我发送带有JSON主体的POST请求时，我的服务方法Print总是接收一个空的PrintOrder作为参数

{
"PrinterName":"EPSON 1200",
"Body":"test body"
}

Answer 1

将BodyStyle = WebMessageBodyStyle.WrappedRequest,更改为BodyStyle = WebMessageBodyStyle.Bare,