Question

感谢您的光临。我以为我分享了在构建WCF服务时遇到的面孔时刻。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，我付出了前进的代价。并分享我如何找到解决方案。

完整的错误消息：带有Action＆＃39; http://Foo.bar.car/IPolicyService/GetPolicyData/＆＃39;的消息由于EndpointDispatcher上的ContractFilter不匹配，无法在接收方处理。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。检查发件人和收件人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);
    }
}

此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);
}

}

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消息进行相同的呼叫失败了，给我一个皱眉的脸......

    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

而失败的呼叫在引号中记录了该动作 [HttpRequest] SOAPAction＆＃34; http://Foo.bar.car/IPolicyService/GetPolicyData/＆＃34;

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>

可能更重要的是走开一会儿，清理头脑吃东西，用一双新鲜的眼睛看问题。

我会在星期一发布答案，但我很高兴地发现那个发现一个角色困扰我的人比我小心承认的那个......

Answer 1

在创建soap消息时，在以下方法中删除第二个参数末尾的正斜杠（/）： Message.CreateMessage（MessageVersion.Soap11，“http://Foo.bar.car/IPolicyService/GetPolicyData/”，body）;

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

1 个答案: