未识别的消息版本

Question

我正在使用一个Web服务调用类来从.NET的C#服务中调用SAP PI。

我正在使用以下方法来实现这个目标：

public object InvokeMethod(string serviceName, string methodName, params object[] args)
{
    System.ServiceModel.Channels.Binding defaultBinding = new BasicHttpBinding(BasicHttpSecurityMode.None);
    if (this.credentials != null)
    {
        ((BasicHttpBinding)defaultBinding).Security.Mode = BasicHttpSecurityMode.TransportCredentialOnly;
        ((BasicHttpBinding)defaultBinding).Security.Transport.ClientCredentialType = HttpClientCredentialType.Basic; //.Ntlm;
    }

    object obj = this.webServiceAssembly.CreateInstance(serviceName, false, BindingFlags.CreateInstance, null, new object[] { defaultBinding, new EndpointAddress(this.webServiceUri.ToString()) }, null, null);

    Type type = obj.GetType();

    if (this.credentials != null)
    {
        PropertyInfo piClientCreds = type.GetProperty("ClientCredentials");
        ClientCredentials creds = (ClientCredentials)piClientCreds.GetValue(obj, null);
        creds.UserName.UserName = this.credentials.UserName;
        creds.UserName.Password = this.credentials.Password;
    }

    return type.InvokeMember(methodName, BindingFlags.InvokeMethod, null, obj, args);
}

然而，调用它会给我抛出这个异常：

   {System.ServiceModel.CommunicationException: Unrecognized message version.
  
Server stack trace: 
   at System.ServiceModel.Channels.ReceivedMessage.ReadStartEnvelope(XmlDictionaryReader reader)
at System.ServiceModel.Channels.BufferedMessage..ctor(IBufferedMessageData messageData, RecycledMessageState recycledMessageState, Boolean[] understoodHeaders, Boolean understoodHeadersModified)
   at System.ServiceModel.Channels.TextMessageEncoderFactory.TextMessageEncoder.ReadMessage(ArraySegment`1 buffer, BufferManager bufferManager, String contentType)
at System.ServiceModel.Channels.MessageEncoder.ReadMessage(Stream stream, BufferManager bufferManager, Int32 maxBufferSize, String contentType)
   at System.ServiceModel.Channels.HttpInput.ReadChunkedBufferedMessage(Stream inputStream)
   at System.ServiceModel.Channels.HttpInput.ParseIncomingMessage(Exception& requestException)
   at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout)
   at System.ServiceModel.Channels.RequestChannel.Request(Message message, TimeSpan timeout)
   at System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message message, TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
   at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
  
Exception rethrown at [0]: 
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at SIOS_Sync_CRMAccount.SIOS_Sync_CRMAccount(SIOS_Sync_CRMAccountRequest request)
   at SIOS_Sync_CRMAccountClient.SIOS_Sync_CRMAccount.SIOS_Sync_CRMAccount(SIOS_Sync_CRMAccountRequest request)
   at SIOS_Sync_CRMAccountClient.SIOS_Sync_CRMAccount(DT_CRMAccount MT_Sync_CRMAccount_request)}

Wireshark XML输出到webservice：

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
    <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
        <MT_Sync_CRMAccount_request xmlns="http://microsoft.com/crm/accounts">
            <recordActionType xmlns="">1</recordActionType>
            <accountnumber xmlns="">3000016</accountnumber>
            <name xmlns="">Test CRM2SAP16</name>
        </MT_Sync_CRMAccount_request>
    </s:Body>
</s:Envelope>

非常感谢任何帮助。

- Kevin Hendricks

Answer 1

SAP Pi 似乎有两个URL。一个用于 WSDL，另一个用于调用。必须更改默认绑定才能使其正常工作到从 WSDL 的端口列表中定义的服务URL上。

object obj = this.webServiceAssembly.CreateInstance(
               serviceName, 
               false, 
               BindingFlags.CreateInstance, 
               null, 
               new object[] { 
                              defaultBinding, 
                              new EndpointAddress(this.webServiceUri.ToString()) 
                            }, 
               null,  
               null);

- Kevin Hendricks

Answer 2

通常我们（SAP PI团队）会提供从SAP PI生成的WSDL文件给合作伙伴使用，并与WSDL一起分享终端点URL，因此请与您的SAP PI团队核实WSDL和终端点URL。

另外请注意，如果他们在SAP PI上更改了与此流程相关的任何内容/对象，则需要向您提供新的WSDL，并确保用户具有访问SAP PI以从您的端推送消息的权限。（其他领域如果适用，例如证书）。

- Prasad Konda

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在SAP中，端点URL是否与WSDL URL相同，除了删除“?WSDL”之外？ - FMFF