由于EndpointDispatcher上的ContractFilter不匹配,无法在接收方处理带有Action的消息

Question

谢谢你的光临.我以为我会在构建WCF服务时分享一个我所经历的面孔.虽然我最终找到了答案.这真是如此令人生气的简单,但是我在一个错位的角色上失去了几个小时.所以我想,我会"付费转发"并分享我如何找到解决方案.

完整的错误消息:由于EndpointDispatcher上的ContractFilter不匹配,无法在接收方处理带有Action" http://Foo.bar.car/IPolicyService/GetPolicyData/ " 的消息.这可能是由于合同不匹配(发送方与接收方之间的操作不匹配)或发送方与接收方之间的绑定/安全性不匹配.检查发送方和接收方是否具有相同的合同和相同的绑定(包括安全要求,例如消息,传输,无)

我的客户端要求是使用代理类发送SOAP消息,以便有效负载始终保留在XML中.

[ServiceContract(Namespace = "http://Foo.bar.car")]
public interface IPolicyService
{
    [OperationContract]
    PolicyResponse GetPolicyData(PolicyRequest request);
}

public class PolicyData : IPolicyService
{
   public PolicyResponse GetPolicyData(PolicyRequest request)
   {
            var polNbr = request.REQ_POL_NBR;
            return GetFakePolicyData(polNbr);
    }
}

这个WebClient方法有效:

using System.Net; 
using System.Xml.Linq;

public static class ClientHelper
{
    public static string Post(string targetUrl, string action, string method, string key, string value)
    {
        var request = BuildEnvelope(method, key, value);
    using (var webClient = new WebClient())
    {
        webClient.Headers.Add("Accept-Header", "application/xml+");
        webClient.Headers.Add("Content-Type", "text/xml; charset=utf-8");
        webClient.Headers.Add("SOAPAction", action);
        var result = webClient.UploadString(targetUrl, "POST", request);

        return result;
    }
}

public static string BuildEnvelope(string method, string key, string value)
{
    XNamespace s = "http://schemas.xmlsoap.org/soap/envelope/";
    XNamespace d = "d4p1";
    XNamespace tempUri = "http://tempuri.org/";
    XNamespace ns = "http://Foo.bar.car";
    XNamespace requestUri = "http://schemas.datacontract.org/2004/07/Foo.bar.car.Model.Policy";
    var xDoc = new XDocument(
                        new XElement(
                            s + "Envelope",
                            new XAttribute(XNamespace.Xmlns + "s", s),
                            new XElement(
                                s + "Body",
                                new XElement(
                                    ns + method,
                                    new XElement(requestUri + "request", 
                                        new XElement(tempUri + key, value))
                                )
                            )
                        )
                    );
    // hack - finish XDoc construction later
    return xDoc.ToString().Replace("request xmlns=", "request xmlns:d4p1=").Replace(key, "d4p1:" + key);
}

}

在调用时:

return ClientHelper.Post("http://localhost:5050/PolicyService.svc", "http://Foo.bar.car/IPolicyService/GetPolicyData", "GetPolicyData", "REQ_POL_NBR", id);

但是通过WCF消息进行同样的呼叫失败了,让我皱眉头......

    private static Message SendMessage(string id)
    {
        var body = new GetPolicyData {request =  new request{ REQ_POL_NBR = id }}; 
        var message = Message.CreateMessage(MessageVersion.Soap11, "http://Foo.bar.car/IPolicyService/GetPolicyData/", body);

        message.Headers.Add(MessageHeader.CreateHeader("Accept-Header", string.Empty, "application/xml+"));
        message.Headers.Add(MessageHeader.CreateHeader("Content-Type", string.Empty, "text/xml"));
        message.Headers.Add(MessageHeader.CreateHeader("FromSender", string.Empty, "DispatchMessage"));
        message.Headers.To = new System.Uri(@"http://localhost:5050/PolicyService.svc");

        var binding = new BasicHttpBinding(BasicHttpSecurityMode.None)
        {
             MessageEncoding = WSMessageEncoding.Text,
            MaxReceivedMessageSize = int.MaxValue,
            SendTimeout = new TimeSpan(1, 0, 0),
            ReaderQuotas = { MaxStringContentLength = int.MaxValue, MaxArrayLength = int.MaxValue, MaxDepth = int.MaxValue }
        };
        message.Properties.Add("Content-Type", "text/xml; charset=utf-8");
        message.Properties.Remove("Accept-Encoding");
        message.Properties.Add("Accept-Header", "application/xml+");

        var cf = new ChannelFactory<IRequestChannel>(binding, new EndpointAddress(new Uri("http://localhost:5050/PolicyService.svc")));

        cf.Open();
        var channel = cf.CreateChannel();
        channel.Open();

        var result = channel.Request(message);

        channel.Close();
        cf.Close();
        return result;
    }


[DataContract(Namespace = "http://Foo.bar.car")]
public class GetPolicyData
{
    [DataMember]
    public request request { get; set; }
}

[DataContract(Namespace = "http://schemas.datacontract.org/2004/07/Foo.bar.car.Model.Policy")]
public class request
{
    ///<summary>
    /// Define request parameter for SOAP API to retrieve selective Policy level data
    /// </summary>
    [DataMember]
    public string REQ_POL_NBR { get; set; }
}

检查web_messages.log只提供了一个红色的鲱鱼,让我误入了错误的兔子洞.有效的调用版本将操作存储为[HttpRequest] SOAPAction http://Foo.bar.car/IPolicyService/GetPolicyData

而失败的调用将引号中的行为记录为[HttpRequest] SOAPAction" http://Foo.bar.car/IPolicyService/GetPolicyData/ "

找到解决方案需要两件事.

使用fiddler重新创建客户端调用并使其工作...

Post action:    http://localhost:5050/PolicyService.svc
Header:
User-Agent: Fiddler
SOAPAction: http://Foo.bar.car/IPolicyService/GetPolicyData
Content-type: text/xml
Host: localhost:5050
Content-Length: 381

Body:

    <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
      <s:Body>
    <GetPolicyData xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://Foo.bar.car">
    <request xmlns:d4p1="http://schemas.datacontract.org/2004/07/Foo.bar.car.Model.Policy">
    <d4p1:REQ_POL_NBR>1</d4p1:REQ_POL_NBR>
    </request>
    </GetPolicyData>
      </s:Body>
    </s:Envelope>

而且可能更重要的是走了一会儿,清理头脑吃东西,用一双新鲜的眼睛看问题.

我将在星期一发布答案,但很高兴地发现那个发现一个角色困扰我的人比我更愿意承认......

Answer 1

创建肥皂消息时，删除以下方法中第二个参数末尾的正斜杠 (/)： Message.CreateMessage(MessageVersion.Soap11, " http://Foo.bar.car/IPolicyService/GetPolicyData/ ",身体）;