Rails與WCF之間的通信

Question

我目前正在研究使用Rails REST服務的WCF應用程序。 問題是當我執行更新或刪除請求時，Rails不返回XML，僅返回以下標頭：

HTTP/1.1 200 OK
Date: Wed, 13 Jan 2010 13:56:25 GMT
Server: Apache/2.2.14 (Debian)
X-Powered-By: Phusion Passenger (mod_rails/mod_rack) 2.2.7
X-Runtime: 20
Cache-Control: private, max-age=0, must-revalidate
Set-Cookie: _Shop-R+Server_session=BAh7BzoPc2Vzc2lvbl9pZCIlODY0NmZlZjQyZTg1OTcyNTE0ZTRlN2NkNTcyZDVmYTEiCmZsYXNoSUM6J0FjdGlvbkNvbnRyb2xsZXI6OkZsYXNoOjpGbGFzaEhhc2h7BjoLbm90aWNlIidDdXN0b21lciB3YXMgc3VjY2Vzc2Z1bGx5IHVwZGF0ZWQuBjoKQHVzZWR7BjsHRg%3D%3D--88d0f739a64ea3a92e3a034d73365393dcfeee1e; path=/; HttpOnly
Content-Length: 1
Status: 200
Content-Type: application/xml; charset=utf-8

據我所知，這是可以預期和正確的。 但是，從WCF調用以下服務請求時，我們會收到ProtocolException（InnerException：XMLException文件的意外結尾）。

    [ServiceContract]
    [XmlSerializerFormat]
    public interface ICustomerService
    {

        [OperationContract]
        [WebGet(
            BodyStyle = WebMessageBodyStyle.Bare,
            ResponseFormat = WebMessageFormat.Xml, 
            UriTemplate = "customers/{id}.xml")]
        Customer GetCustomer(string id);

        [OperationContract]
        [WebInvoke(
            BodyStyle = WebMessageBodyStyle.Bare,
            UriTemplate = "customers/{id}.xml",
            Method = "PUT")]
        void UpdateCustomer(string id, Customer newCustomer);

        [OperationContract]
        [WebInvoke(
            BodyStyle = WebMessageBodyStyle.Bare,
            ResponseFormat = WebMessageFormat.Xml,
            UriTemplate = "customers.xml",
            Method = "POST")]
        Customer CreateCustomer(Customer newCustomer);

        [OperationContract]
        [WebInvoke(
            BodyStyle = WebMessageBodyStyle.Bare,
            UriTemplate = "customers/{id}.xml",
            Method = "DELETE")]
        void DeleteCustomer(string id);

    }

GetCustomer和CreateCustomer方法可以正常工作，UpdateCustomer和DestroyCustomer引發異常。 我們懷疑這是因為期望XML作為響應。

是否有人對Rails和WCF有任何經驗，並且知道此問題的解決方案/解決方法？

為了完整起見，以下是異常詳細信息：

ProtocolException {“從網絡接收到的XML出現問題。有關更多詳細信息，請參閱內部異常。”}

XMLException（InnerException）{“文件結尾意外。”} StackTrace：

   at System.Xml.EncodingStreamWrapper.ProcessBuffer(Byte[] buffer, Int32 offset, Int32 count, Encoding encoding)
   at System.Xml.XmlUTF8TextReader.SetInput(Byte[] buffer, Int32 offset, Int32 count, Encoding encoding, XmlDictionaryReaderQuotas quotas, OnXmlDictionaryReaderClose onClose)
   at System.Xml.XmlDictionaryReader.CreateTextReader(Byte[] buffer, Int32 offset, Int32 count, Encoding encoding, XmlDictionaryReaderQuotas quotas, OnXmlDictionaryReaderClose onClose)
   at System.ServiceModel.Channels.TextMessageEncoderFactory.TextMessageEncoder.UTF8BufferedMessageData.TakeXmlReader()
   at System.ServiceModel.Channels.BufferedMessageData.GetMessageReader()
   at System.ServiceModel.Channels.BufferedMessage..ctor(IBufferedMessageData messageData, RecycledMessageState recycledMessageState, Boolean[] understoodHeaders)
   at System.ServiceModel.Channels.TextMessageEncoderFactory.TextMessageEncoder.ReadMessage(ArraySegment`1 buffer, BufferManager bufferManager, String contentType)
   at System.ServiceModel.Channels.WebMessageEncoderFactory.WebMessageEncoder.ReadMessage(ArraySegment`1 buffer, BufferManager bufferManager, String contentType)
   at System.ServiceModel.Channels.HttpInput.DecodeBufferedMessage(ArraySegment`1 buffer, Stream inputStream)

Answer 1

Content-Length: 1
Content-Type: application/xml; charset=utf-8

不是有效的XML響應。

Answer 2

感謝“ Darin Dimitrov”和“ Nate Bross”，我已經找到了它。 當您將內容類型設置為application / xml時，WCF期望XML是正確的。 我已經將內容類型更改為text / plain（在rails中），並且可以正常工作。

在rails格式中更改以下內容：

format.xml { head :ok }

至

format.xml { head :ok, :content_type => 'text/plain' }

Answer 3

去下載REST Starter Kit預覽版2 ，看看Microsoft.Http命名空間。 使用此庫執行到Rails界面的POST就像這樣簡單：

var client = new HttpClient("http://railsinterface.com");
var content = HttpContent.CreateXmlSerializable<Customer>(customer);
var response = client.Post("customers.xml",content);