Wcf “错误”；此消息无法支持该操作，因为它已被读取；_Wcf_Wcf Binding

Wcf “错误”；此消息无法支持该操作，因为它已被读取；

wcf

Wcf “错误”；此消息无法支持该操作，因为它已被读取；,wcf,wcf-binding,Wcf,Wcf Binding,我有同样的问题，列在下面的线程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\U WCF\U Samples\WCF\Extensibility\Interop\RouteByBody\CS\service将以下文件添加到项目中 Dispatch By Body Operations Selector.cs DispatchByBodyBehaviorAttribute.cs 2）将以下属性添加到界面（ServiceContract旁边） 3）

我有同样的问题，列在下面的线程

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\U WCF\U Samples\WCF\Extensibility\Interop\RouteByBody\CS\service将以下文件添加到项目中

Dispatch By Body Operations Selector.cs

DispatchByBodyBehaviorAttribute.cs

2）将以下属性添加到界面（ServiceContract旁边）

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，所有消息的WrapperName和Wrappernamespace都为空。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（如下所示）。如果有人对如何解决这个问题有任何想法，如果你能发表一些评论，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&amp; rpc)
at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc&amp; rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc&amp; rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage41(MessageRpc&amp; rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc&amp; rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc&amp; rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc&amp; rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc&amp; rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage11(MessageRpc&amp; rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc&amp; 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
}

at System.ServiceModel.Channels.Message.GetReaderAtBodyContents（）
位于System.ServiceModel.Dispatcher.OperationFormatter.DeserializeBodyContent（消息消息，对象[]参数，布尔值isRequest）
位于System.ServiceModel.Dispatcher.OperationFormatter.DeserializeRequest（消息消息，对象[]参数）
位于System.ServiceModel.Dispatcher.DispatchOperationRuntime.DeserializeInputs（MessageRpc&；rpc）
位于System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin（MessageRpc&；rpc）
位于System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5（MessageRpc&；rpc）
位于System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage41（MessageRpc&；rpc）
位于System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4（MessageRpc&；rpc）
位于System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31（MessageRpc&；rpc）
位于System.ServiceModel.Dispatcher.ImmutableDispatcheRuntime.ProcessMessage3（MessageRpc&；rpc）
位于System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2（MessageRpc&；rpc）
位于System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage11（MessageRpc&；rpc）
位于System.ServiceModel.Dispatcher.ImmutableDispatcheRuntime.ProcessMessage1（MessageRpc&；rpc）
位于System.ServiceModel.Dispatcher.MessageRpc.Process（布尔isOperationContextSet）
位于System.ServiceModel.Dispatcher.ChannelHandler.DispatchedReleasePump（RequestContext请求、布尔cleanThread、OperationContext currentOperationContext）
位于System.ServiceModel.Dispatcher.ChannelHandler.HandlerRequest（RequestContext请求，OperationContext currentOperationContext）
位于System.ServiceModel.Dispatcher.ChannelHandler.AsyncMessagePump（IAsyncResult结果）
位于System.ServiceModel.Dispatcher.ChannelHandler.OnAsyncReceiveComplete（IAsyncResult结果）
在System.Runtime.Fx.AsyncThunk.UnhandledExceptionFrame（IAsyncResult结果）中
在System.Runtime.AsyncResult.Complete（布尔同步完成）
在System.Runtime.InputQueue`1.AsyncQueueReader.Set（项）上
在System.Runtime.InputQueue`1.EnqueueAndDispatch（项项项，布尔值canDispatchOnThisThread）
在System.Runtime.InputQueue`1.EnqueueAndDispatch（T项，操作dequeuedCallback，布尔canDispatchOnThisThread）
位于System.ServiceModel.Channels.SingletonChannelAcceptor`3.Enqueue（QueueItemType项、Action dequeuedCallback、Boolean canDispatchOnThisThread）
位于System.ServiceModel.Channels.HttpChannelListener.HttpContextReceived（HttpRequestContext上下文，操作回调）
位于System.ServiceModel.Channels.SharedHttpTransportManager.OnGetContextCore（IAsyncResult结果）
位于System.ServiceModel.Channels.SharedHttpTransportManager.OnGetContext（IAsyncResult结果）
在System.Runtime.Fx.AsyncThunk.UnhandledExceptionFrame（IAsyncResult结果）中
在System.Net.LazyAsyncResult.Complete（IntPtr userToken）中
在System.Net.LazyAsyncResult.ProtectedInvokeCallback（对象结果，IntPtr userToken）
在System.Net.ListenerAsyncResult.WaitCallback（UInt32错误代码，UInt32个字节，NativeOverlapped*NativeOverlapped）
在System.Threading.\u IOCompletionCallback.PerformiCompletionCallback（UInt32错误代码，UInt32个字节，本机重叠*pOVERLAP）
类别DispatchByBodyElement操作选择器：IDispatchOperationSelector
{
词典调度词典；
public DispatchByBodyElement操作选择器（字典dispatchDictionary）
{
this.dispatchDictionary=dispatchDictionary
}
#地区选举委员
私有消息CreateMessageCopy（消息消息，XmlDictionaryReader正文）
{
//消息副本=Message.CreateMessage（Message.Version、Message.Headers.Action、body）；
//copy.Headers.CopyHeaderFrom（消息，0）；
//copy.Properties.CopyProperties（message.Properties）；
//返回副本；
MessageBuffer=message.CreateBufferedCopy（Int32.MaxValue）；
消息副本=buffer.CreateMessage（）；
buffer.Close（）；
copy.Headers.CopyHeaderFrom（消息，0）；
copy.Properties.CopyProperties（message.Properties）；
返回副本；
}
公共字符串选择操作（参考System.ServiceModel.Channels.Message消息）
{
XmlDictionaryReader bodyReader=message.getReaderBodyContents（）；
XmlQualifiedName lookupQName=新的XmlQualifiedName（bodyReader.LocalName，bodyReader.NamespaceURI）；
message=CreateMessageCopy（message，bodyReader）；
if（dispatchDictionary.ContainsKey（lookupQName））
{
返回dispatchDictionary[lookupQName]；
}
其他的
{
返回null；
}
}
#端区
}
[AttributeUsage（AttributeTargets.Class | AttributeTargets.Interface）]
密封类DispatchByBodyBehaviorAttribute:属性，IContractBehavior
{
#区域IContractBehavior成员
公共void AddBindingParameter
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&amp; rpc)
at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc&amp; rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc&amp; rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage41(MessageRpc&amp; rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc&amp; rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc&amp; rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc&amp; rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc&amp; rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage11(MessageRpc&amp; rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc&amp; 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
}

public void AfterReceiveReply(ref System.ServiceModel.Channels.Message reply, object correlationState)
{
    MessageBuffer buffer = reply.CreateBufferedCopy(Int32.MaxValue);
    reply = buffer.CreateMessage();
    Message m = buffer.CreateMessage();
    LogMessage(m, " Response => ");
}

 private Message CreateMessageCopy(ref Message message, XmlDictionaryReader body)
{
...
   message = buffer.CreateMessage();

XmlDictionaryReader GetReader(ref Message message)
{
    MessageBuffer buffer = message.CreateBufferedCopy(Int32.MaxValue);
    message = buffer.CreateMessage();
    newMessage = buffer.CreateMessage();
    XmlDictionaryReader rv = buffer.CreateMessage().GetReaderAtBodyContents();
    buffer.Close();
    return rv;
}

static System.ServiceModel.Channels.Message newMessage = null;
static System.ServiceModel.Channels.Message lastMessage = null;

public string SelectOperation(ref System.ServiceModel.Channels.Message message)
{
    try
    {
        if(message == lastMessage)
            message = newMessage;

        XmlDictionaryReader bodyReader = GetReader(ref message);

        lastMessage = message;

        XmlQualifiedName lookupQName = new XmlQualifiedName(bodyReader.LocalName, bodyReader.NamespaceURI);
        if (dispatchDictionary.ContainsKey(lookupQName))
        {
            return dispatchDictionary[lookupQName];
        }
        else
        {
            return null;
        }
    }
    catch(Exception ex)
    {
        throw ex;
    }
}