[英]WCF Service Doesn't Like My Content-Type
我正在使用WCF构建一组Rest Services。 我正在使用邮递员发出测试请求。 一切都进行得很好,直到我想在请求标头中指定“ Content-Type”。
服务合同:
[OperationContract]
[WebInvoke(Method = "POST",
UriTemplate = "data")]
Stream GetData(Stream iBody);
及其背后的代码:
public Stream GetData(Stream iBody) {
StreamReader objReader = new StreamReader(iBody);
string strBody = objReader.ReadToEnd();
XmlDocument objDoc = new XmlDocument();
objDoc.LoadXml(strBody);
return GetStreamData("Hello There. " + objDoc.InnerText);
}
private Stream GetStreamData(string iContent) {
byte[] resultBytes = Encoding.UTF8.GetBytes(iContent);
return new MemoryStream(resultBytes);
}
只要我在请求标头中不包含“ text / xml”值的“ Content-Type”,这一切都可以正常工作。
我也尝试了“ text / xml; charset = utf-8”和“ application / xml”的组合,但均无济于事。 它与服务方法接受的类型有关吗? 任何指针将不胜感激。
由于您在WCF服务中使用原始编程模型 (使用Stream
作为参数/返回类型),因此您需要告诉WCF堆栈不要尝试将XML内容类型的传入请求解释为XML,而是让它通过。 您可以使用WebContentTypeMapper
做到这一点,它将所有传入的请求(无论它们的内容类型如何)都映射到原始模式。 顶部链接的博客文章提供了有关此内容的更多信息,下面的代码显示了处理您的案例的映射器的示例。
public class StackOverflow_35750073
{
[ServiceContract]
public class Service
{
[OperationContract]
[WebInvoke(Method = "POST", UriTemplate = "data")]
public Stream GetData(Stream iBody)
{
StreamReader objReader = new StreamReader(iBody);
string strBody = objReader.ReadToEnd();
XmlDocument objDoc = new XmlDocument();
objDoc.LoadXml(strBody);
return GetStreamData("Hello There. " + objDoc.InnerText);
}
private Stream GetStreamData(string iContent)
{
byte[] resultBytes = Encoding.UTF8.GetBytes(iContent);
return new MemoryStream(resultBytes);
}
}
class RawMapper : WebContentTypeMapper
{
public override WebContentFormat GetMessageFormatForContentType(string contentType)
{
return WebContentFormat.Raw;
}
}
public static void Test()
{
string baseAddress = "http://" + Environment.MachineName + ":8000/Service";
ServiceHost host = new ServiceHost(typeof(Service), new Uri(baseAddress));
ServiceEndpoint endpoint1 = host.AddServiceEndpoint(
typeof(Service),
new WebHttpBinding { ContentTypeMapper = new RawMapper() },
"withMapper");
endpoint1.Behaviors.Add(new WebHttpBehavior());
ServiceEndpoint endpoint2 = host.AddServiceEndpoint(
typeof(Service),
new WebHttpBinding(),
"noMapper");
endpoint2.Behaviors.Add(new WebHttpBehavior());
host.Open();
Console.WriteLine("Host opened");
var input = "<hello><world>How are you?</world></hello>";
Console.WriteLine("Using a Content-Type mapper:");
SendRequest(baseAddress + "/withMapper/data", "POST", "text/xml", input);
SendRequest(baseAddress + "/withMapper/data", "POST", null, input);
Console.WriteLine("Without using a Content-Type mapper:");
SendRequest(baseAddress + "/noMapper/data", "POST", "text/xml", input);
SendRequest(baseAddress + "/noMapper/data", "POST", null, input);
Console.Write("Press ENTER to close the host");
Console.ReadLine();
host.Close();
}
public static string SendRequest(string uri, string method, string contentType, string body)
{
string responseBody = null;
HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(uri);
req.Method = method;
if (!String.IsNullOrEmpty(contentType))
{
req.ContentType = contentType;
}
if (body != null)
{
byte[] bodyBytes = Encoding.UTF8.GetBytes(body);
req.GetRequestStream().Write(bodyBytes, 0, bodyBytes.Length);
req.GetRequestStream().Close();
}
HttpWebResponse resp;
try
{
resp = (HttpWebResponse)req.GetResponse();
}
catch (WebException e)
{
resp = (HttpWebResponse)e.Response;
}
if (resp == null)
{
responseBody = null;
Console.WriteLine("Response is null");
}
else
{
Console.WriteLine("HTTP/{0} {1} {2}", resp.ProtocolVersion, (int)resp.StatusCode, resp.StatusDescription);
foreach (string headerName in resp.Headers.AllKeys)
{
Console.WriteLine("{0}: {1}", headerName, resp.Headers[headerName]);
}
Console.WriteLine();
Stream respStream = resp.GetResponseStream();
if (respStream != null)
{
responseBody = new StreamReader(respStream).ReadToEnd();
Console.WriteLine(responseBody);
}
else
{
Console.WriteLine("HttpWebResponse.GetResponseStream returned null");
}
}
Console.WriteLine();
Console.WriteLine(" *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* ");
Console.WriteLine();
return responseBody;
}
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.