I am posting XmlDocument to ApiController (from windows service, service is working fine, it is posting correct, I used it in wcf web API), but XML is always null, what am I doing wrong?
I can post some class, such in tutorials, or Get any data and everything will be ok, but I can't post XmlDocument.
public class XmlController : ApiController
{
public void PostXml(XmlDocument xml)
{
// code
}
}
i follow the solution given by @Rhot but somehow it doesn't work so i edit like below which work for me:
public class XmlMediaTypeFormatter : MediaTypeFormatter
{
public XmlMediaTypeFormatter()
{
SupportedMediaTypes.Add(new MediaTypeHeaderValue("application/xml"));
}
public override bool CanReadType(Type type)
{
return type == typeof(XDocument);
}
public override bool CanWriteType(Type type)
{
return type == typeof(XDocument);
}
public override Task<object> ReadFromStreamAsync(Type type, Stream stream, HttpContent content, IFormatterLogger formatterLogger)
{
var reader = new StreamReader(stream);
string value = reader.ReadToEnd();
var tcs = new TaskCompletionSource<object>();
try
{
var xmlDoc = XDocument.Parse(value);
tcs.SetResult(xmlDoc);
}
catch (Exception ex)
{
//disable the exception and create custome error
//tcs.SetException(ex);
var xml = new XDocument(
new XElement("Error",
new XElement("Message", "An error has occurred."),
new XElement("ExceptionMessage", ex.Message)
));
tcs.SetResult(xml);
}
return tcs.Task;
}
public override Task WriteToStreamAsync(Type type, object value, Stream stream, HttpContent content, TransportContext transportContext)
{
var writer = new StreamWriter(stream);
writer.Write(((XDocument)value).ToString());
writer.Flush();
var tcs = new TaskCompletionSource<object>();
tcs.SetResult(null);
return tcs.Task;
}
}
register to global.asax:
GlobalConfiguration.Configuration.Formatters.Insert(0, new XmlMediaTypeFormatter());
and below my WebAPI Controller:
public HttpResponseMessage Post(XDocument xml)
{
return Request.CreateResponse(HttpStatusCode.OK, xml);
}
I've found a solution:
We need to use inheritance to inherit MediaTypeFormatter
public class XmlMediaTypeFormatter : MediaTypeFormatter
{
public XmlMediaTypeFormatter()
{
SupportedMediaTypes.Add(new MediaTypeHeaderValue("text/xml"));
}
public override System.Threading.Tasks.Task<object> ReadFromStreamAsync(Type type, Stream stream,
HttpContentHeaders contentHeaders,
IFormatterLogger formatterLogger)
{
var taskCompletionSource = new TaskCompletionSource<object>();
try
{
var memoryStream = new MemoryStream();
stream.CopyTo(memoryStream);
var s = System.Text.Encoding.UTF8.GetString(memoryStream.ToArray());
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(s);
taskCompletionSource.SetResult(xmlDoc);
}
catch (Exception e)
{
taskCompletionSource.SetException(e);
}
return taskCompletionSource.Task;
}
public override bool CanReadType(Type type)
{
return type == typeof(XmlDocument);
}
public override bool CanWriteType(Type type)
{
return false;
}
}
Then register it in Global.asax:
GlobalConfiguration.Configuration.Formatters.Insert(0, new XmlMediaTypeFormatter());
Controller:
public HttpResponseMessage PostXml([FromBody] XmlDocument xml)
{//code...}
Is PostXml supposed to be an action on a controller? If so you should mark your controller action as accepting an HttpPost. From there I would modify the action to work as follows:
[HttpPost]
public ActionResult PostXml(HttpPostedFileBase xml)
{
// code
}
If you are still have trouble accepting the posted files, fire up the debugger and inspect the Request files collection: http://msdn.microsoft.com/en-us/library/system.web.httprequest.files.aspx
