Question

我正在使用webserviceinvoking类从带有C＃服务的.NET调用SAP PI。

我使用以下方法执行此操作：

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，调用它会给我一个无法识别的消息版本。例外：

{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。

Answer 1

通常，我们（SAP PI Team）提供从SAP PI生成的WSDL文件，供合作伙伴使用，以及我们与合作伙伴共享的终点URL以及WSDL，因此请与SAP PI团队核实WSDL并结束点URL。

另请注意，如果他们在SAP PI上更改了与此流相关的任何事物/对象，他们需要为您提供新的WSDL，并确保用户可以访问SAP PI以从您的端点推送消息（其他领域适用。，证书）。

Answer 2

SAP Pi似乎有两个URL。一个用于WSDL，另一个用于呼叫。必须更改默认绑定才能使其工作到WSDL的端口列表中定义的服务URL。

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

无法识别的消息版本。使用Web服务调用从.net C＃Web服务调用SAP API端点时出错

2 个答案: