我有以下线程中列出的相同问题。
客户端不发送 SOAPAction 的 WSDL 第一个 WCF 服务器
我执行了同一线程中列出的步骤(如下所示)
1) 下载 Microsoft WCF 示例。从 WF_WCF_Samples\WCF\Extensibility\Interop\RouteByBody\CS\service 将以下文件添加到您的项目中
DispatchByBodyOperationSelector.cs
DispatchByBodyBehaviorAttribute.cs
2)将以下属性添加到您的界面(在您的ServiceContract旁边)
XmlSerializerFormat
DispatchByBodyBehavior
3)将以下内容添加到您的服务接口
[OperationContract(Action = "")]
public void DoNothing()
{
}
4) 对于我的服务,WrapperName 和 Wrappernamespace 对于所有消息都是空的。我必须进入 DispatchByBodyBehaviorAttribute 并编辑 ApplyDispatchBehavior() 以添加以下行来检查这一点:
if (qname.IsEmpty) {
qname = new XmlQualifiedName(operationDescription.Messages[0].Body.Parts[0].Name, operationDescription.Messages[0].Body.Parts[0].Namespace);
}
现在,我收到一条错误消息“此消息无法支持该操作,因为它已被读取”。我打开了跟踪并捕获了堆栈跟踪(如下)。如果有人对如何解决此问题有任何想法,如果您能发表一些评论,我将不胜感激。谢谢你的帮助!
at System.ServiceModel.Channels.Message.GetReaderAtBodyContents()
at System.ServiceModel.Dispatcher.OperationFormatter.DeserializeBodyContents(Message message, Object[] parameters, Boolean isRequest)
at System.ServiceModel.Dispatcher.OperationFormatter.DeserializeRequest(Message message, Object[] parameters)
at System.ServiceModel.Dispatcher.DispatchOperationRuntime.DeserializeInputs(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage41(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage11(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)
at System.ServiceModel.Dispatcher.ChannelHandler.DispatchAndReleasePump(RequestContext request, Boolean cleanThread, OperationContext currentOperationContext)
at System.ServiceModel.Dispatcher.ChannelHandler.HandleRequest(RequestContext request, OperationContext currentOperationContext)
at System.ServiceModel.Dispatcher.ChannelHandler.AsyncMessagePump(IAsyncResult result)
at System.ServiceModel.Dispatcher.ChannelHandler.OnAsyncReceiveComplete(IAsyncResult result)
at System.Runtime.Fx.AsyncThunk.UnhandledExceptionFrame(IAsyncResult result)
at System.Runtime.AsyncResult.Complete(Boolean completedSynchronously)
at System.Runtime.InputQueue`1.AsyncQueueReader.Set(Item item)
at System.Runtime.InputQueue`1.EnqueueAndDispatch(Item item, Boolean canDispatchOnThisThread)
at System.Runtime.InputQueue`1.EnqueueAndDispatch(T item, Action dequeuedCallback, Boolean canDispatchOnThisThread)
at System.ServiceModel.Channels.SingletonChannelAcceptor`3.Enqueue(QueueItemType item, Action dequeuedCallback, Boolean canDispatchOnThisThread)
at System.ServiceModel.Channels.HttpChannelListener.HttpContextReceived(HttpRequestContext context, Action callback)
at System.ServiceModel.Channels.SharedHttpTransportManager.OnGetContextCore(IAsyncResult result)
at System.ServiceModel.Channels.SharedHttpTransportManager.OnGetContext(IAsyncResult result)
at System.Runtime.Fx.AsyncThunk.UnhandledExceptionFrame(IAsyncResult result)
at System.Net.LazyAsyncResult.Complete(IntPtr userToken)
at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
at System.Net.ListenerAsyncResult.WaitCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* nativeOverlapped)
at System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP)
</StackTrace>
class DispatchByBodyElementOperationSelector : IDispatchOperationSelector
{
Dictionary<XmlQualifiedName, string> dispatchDictionary;
public DispatchByBodyElementOperationSelector(Dictionary<XmlQualifiedName, string> dispatchDictionary)
{
this.dispatchDictionary = dispatchDictionary;
}
#region IDispatchOperationSelector Members
private Message CreateMessageCopy(Message message, XmlDictionaryReader body)
{
//Message copy = Message.CreateMessage(message.Version, message.Headers.Action, body);
//copy.Headers.CopyHeaderFrom(message, 0);
//copy.Properties.CopyProperties(message.Properties);
//return copy;
MessageBuffer buffer = message.CreateBufferedCopy(Int32.MaxValue);
Message copy = buffer.CreateMessage();
buffer.Close();
copy.Headers.CopyHeaderFrom(message, 0);
copy.Properties.CopyProperties(message.Properties);
return copy;
}
public string SelectOperation(ref System.ServiceModel.Channels.Message message)
{
XmlDictionaryReader bodyReader = message.GetReaderAtBodyContents();
XmlQualifiedName lookupQName = new XmlQualifiedName(bodyReader.LocalName, bodyReader.NamespaceURI);
message = CreateMessageCopy(message,bodyReader);
if (dispatchDictionary.ContainsKey(lookupQName))
{
return dispatchDictionary[lookupQName];
}
else
{
return null;
}
}
#endregion
}
[AttributeUsage(AttributeTargets.Class|AttributeTargets.Interface)]
sealed class DispatchByBodyBehaviorAttribute : Attribute, IContractBehavior
{
#region IContractBehavior Members
public void AddBindingParameters(ContractDescription contractDescription, ServiceEndpoint endpoint, System.ServiceModel.Channels.BindingParameterCollection bindingParameters)
{
// no binding parameters need to be set here
return;
}
public void ApplyClientBehavior(ContractDescription contractDescription, ServiceEndpoint endpoint, System.ServiceModel.Dispatcher.ClientRuntime clientRuntime)
{
// this is a dispatch-side behavior which doesn't require
// any action on the client
return;
}
public void ApplyDispatchBehavior(ContractDescription contractDescription, ServiceEndpoint endpoint, System.ServiceModel.Dispatcher.DispatchRuntime dispatchRuntime)
{
// We iterate over the operation descriptions in the contract and
// record the QName of the request body child element and corresponding operation name
// to the dictionary to be used for dispatch
Dictionary<XmlQualifiedName,string> dispatchDictionary = new Dictionary<XmlQualifiedName,string>();
foreach( OperationDescription operationDescription in contractDescription.Operations )
{
XmlQualifiedName qname =
new XmlQualifiedName(operationDescription.Messages[0].Body.WrapperName, operationDescription.Messages[0].Body.WrapperNamespace);
if (qname.IsEmpty)
{
qname = new XmlQualifiedName(operationDescription.Messages[0].Body.Parts[0].Name, operationDescription.Messages[0].Body.Parts[0].Namespace);
}
dispatchDictionary.Add(qname, operationDescription.Name);
}
// Lastly, we create and assign and instance of our operation selector that
// gets the dispatch dictionary we've just created.
dispatchRuntime.OperationSelector =
new DispatchByBodyElementOperationSelector(dispatchDictionary);
}
public void Validate(ContractDescription contractDescription, ServiceEndpoint endpoint)
{
//
}
#endregion
}