c# - WCF: "Error creating reader for MTOM message"

试图让MTOM在WCF客户端中工作。我尝试使用的特定功能发送了PDF文档的MTOM编码的字节数组。使用SoapUI通过WSDL测试API可以正常工作；但是，当我尝试在客户端中执行相同的操作时，出现以下错误:

Error creating a reader for the MTOM message
System.Xml.XmlException: MTOM messages must have type 'application/xop+xml'.
   at System.Xml.XmlMtomReader.ReadMessageContentTypeHeader(ContentTypeHeader he
ader, String& boundary, String& start, String& startInfo)
   at System.Xml.XmlMtomReader.Initialize(Stream stream, String contentType, Xml
DictionaryReaderQuotas quotas, Int32 maxBufferSize)
   at System.Xml.XmlMtomReader.SetInput(Stream stream, Encoding[] encodings, Str
ing contentType, XmlDictionaryReaderQuotas quotas, Int32 maxBufferSize, OnXmlDic
tionaryReaderClose onClose)
   at System.Xml.XmlMtomReader.SetInput(Byte[] buffer, Int32 offset, Int32 count
, Encoding[] encodings, String contentType, XmlDictionaryReaderQuotas quotas, In
t32 maxBufferSize, OnXmlDictionaryReaderClose onClose)
   at System.Xml.XmlDictionaryReader.CreateMtomReader(Byte[] buffer, Int32 offse
t, Int32 count, Encoding[] encodings, String contentType, XmlDictionaryReaderQuo
tas quotas, Int32 maxBufferSize, OnXmlDictionaryReaderClose onClose)
   at System.ServiceModel.Channels.MtomMessageEncoder.MtomBufferedMessageData.Ta
keXmlReader()

Server stack trace:
   at System.ServiceModel.Channels.MtomMessageEncoder.MtomBufferedMessageData.Ta
keXmlReader()
   at System.ServiceModel.Channels.BufferedMessageData.DoTakeXmlReader()
   at System.ServiceModel.Channels.BufferedMessageData.GetMessageReader()
   at System.ServiceModel.Channels.BufferedMessage..ctor(IBufferedMessageData me
ssageData, RecycledMessageState recycledMessageState, Boolean[] understoodHeader
s, Boolean understoodHeadersModified)
   at System.ServiceModel.Channels.BufferedMessage..ctor(IBufferedMessageData me
ssageData, RecycledMessageState recycledMessageState)
   at System.ServiceModel.Channels.MtomMessageEncoder.ReadMessage(ArraySegment`1
 buffer, BufferManager bufferManager, String contentType)
   at System.ServiceModel.Channels.MessageEncoder.ReadMessage(Stream stream, Buf
ferManager bufferManager, Int32 maxBufferSize, String contentType)
   at System.ServiceModel.Channels.HttpInput.ReadChunkedBufferedMessage(Stream i
nputStream)
   at System.ServiceModel.Channels.HttpInput.ParseIncomingMessage(Exception& req
uestException)
   at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpCha
nnelRequest.WaitForReply(TimeSpan timeout)
   at System.ServiceModel.Channels.RequestChannel.Request(Message message, TimeS
pan timeout)
   at System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message messag
e, TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean on
eway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan tim
eout)
   at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean on
eway, ProxyOperationRuntime operation, Object[] ins, Object[] outs)
   at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCall
Message methodCall, ProxyOperationRuntime operation)
   at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)

Exception rethrown at [0]:
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage req
Msg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgDa
ta, Int32 type)
   at WsApiServicePortType.getDoc(getDocRequest request)
   at WsApiServicePortTypeClient.WsApiServicePortType.getDoc(getDocReq
uest request) in C:\Users\ant\documents\visual studio 2010\Projects\Client\Cl
ient\WsApiService.cs:line 3927
   at WsApiServicePortTypeClient.getDoc(String username, String ID) in C
:\Users\ant\documents\visual studio 2010\Projects\Client\Client\WsApiServic
e.cs:line 3935
   at Client.Program.Main(String[] args) in C:\Users\ant\documents\visual stu
dio 2010\Projects\Client\Client\Program.cs:line 18

现在，我到处搜索了，除了以下内容之外，找不到与该错误相关的内容:http://social.msdn.microsoft.com/Forums/en-US/wcf/thread/73039d75-e078-436b-a8ab-d8c7197a976b

但是，该链接中的建议对我来说没有任何意义。我在代码中的任何地方都看不到响应消息作为对象进行修改的对象。所以...我在这里。我拥有的客户端非常简单:它由svcutil生成的代理类(大约)组成。进行调用的10行代码以及app.config文件。我已将证书信息添加到配置文件中，并将messageEncoding更改为Mtom，但除此之外，它们全部由svcutil生成。

客户端代码如下所示(非常简单，如您所见):

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.ServiceModel;
using System.Text;

namespace Client
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                WsApiServicePortTypeClient client = new WsApiServicePortTypeClient();
                byte[] doc = client.getRecordDoc("username0000", "1234567");
                File.WriteAllBytes(@"C:\TestRecords\wcf-test.pdf", doc);
                Console.WriteLine("Ok, check it now.");
                Console.ReadLine();
            }
            catch (Exception ex)
            {
                Console.WriteLine("ERROR: " + ex.Message + Environment.NewLine
                    + ex.GetBaseException().ToString() + Environment.NewLine
                    + ex.StackTrace + Environment.NewLine);
                Console.ReadLine();
            }
        }
    }
}

从代理类:

[assembly: System.Runtime.Serialization.ContractNamespaceAttribute("http://www.<redacted>.com/ws/schemas", ClrNamespace="www.<redacted>.com.ws.schemas")]



[System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "4.0.0.0")]
[System.ServiceModel.ServiceContractAttribute(Namespace="http://www.<redacted>.com/ws/definitions", ConfigurationName="WsApiServicePortType")]
public interface WsApiServicePortType
{
...
    // CODEGEN: Generating message contract since the wrapper namespace (http://www.<redacted>.com/ws/schemas) of message getRecordDocRequest does not match the default value (http://www.<redacted>.com/ws/definitions)
    [System.ServiceModel.OperationContractAttribute(Action="http://localhost:8080/getRecordDoc", ReplyAction="http://www.<redacted>.com/ws/definitions/WsApiServicePortType/getRecordDocResponse")]
    [System.ServiceModel.FaultContractAttribute(typeof(www.<redacted>.com.ws.schemas.fault), Action="http://www.<redacted>.com/ws/definitions/WsApiServicePortType/getRecordDoc/Fault/wsFault", Name="fault", Namespace="http://www.<redacted>.com/ws/schemas")]
    [System.ServiceModel.XmlSerializerFormatAttribute()]
    [System.ServiceModel.ServiceKnownTypeAttribute(typeof(wsError))]
    getRecordDocResponse getRecordDoc(getRecordDocRequest request);
...
}

[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "4.0.0.0")]
public partial class WsApiServicePortTypeClient : System.ServiceModel.ClientBase<WsApiServicePortType>, WsApiServicePortType
{

    public WsApiServicePortTypeClient()
    {
    }

    public WsApiServicePortTypeClient(string endpointConfigurationName) :
            base(endpointConfigurationName)
    {
    }

    public WsApiServicePortTypeClient(string endpointConfigurationName, string remoteAddress) :
            base(endpointConfigurationName, remoteAddress)
    {
    }

    public WsApiServicePortTypeClient(string endpointConfigurationName, System.ServiceModel.EndpointAddress remoteAddress) :
            base(endpointConfigurationName, remoteAddress)
    {
    }

    public WsApiServicePortTypeClient(System.ServiceModel.Channels.Binding binding, System.ServiceModel.EndpointAddress remoteAddress) :
            base(binding, remoteAddress)
    {
    }

...
    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Advanced)]
    getRecordDocResponse WsApiServicePortType.getRecordDoc(getRecordDocRequest request)
    {
        return base.Channel.getRecordDoc(request);
    }

    public byte[] getRecordDoc(string username, string ID)
    {
        getRecordDocRequest inValue = new getRecordDocRequest();
        inValue.username = username;
        inValue.ID = ID;
        getRecordDocResponse retVal = ((WsApiServicePortType)(this)).getRecordDoc(inValue);
        return retVal.doc;
    }
...
}

并从app.config中:

<?xml version="1.0"?>
<configuration>
    <system.serviceModel>
        <behaviors>
            <endpointBehaviors>
                <behavior name="NewBehavior0">
                    <clientCredentials>
                        <clientCertificate findValue="xxxxxxxx"
                            storeName="My" x509FindType="FindBySerialNumber" />
                    </clientCredentials>
                </behavior>
            </endpointBehaviors>
        </behaviors>
        <bindings>
            <basicHttpBinding>
                <binding name="WsApiServiceSoapBinding" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Mtom" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true">
                    <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384"/>
                    <security mode="Transport">
                        <transport clientCredentialType="Certificate" proxyCredentialType="None" realm=""/>
                        <message clientCredentialType="Certificate" algorithmSuite="Default"/>
                    </security>
                </binding>
            </basicHttpBinding>
        </bindings>
        <client>
            <endpoint address="https://wisp.<redacted>.com/services/WsApiService/"
                behaviorConfiguration="NewBehavior0" binding="basicHttpBinding"
                bindingConfiguration="WsApiServiceSoapBinding" contract="WsApiServicePortType"
                name="WsApiServicePort" />
        </client>
    </system.serviceModel>
<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup></configuration>

另外，尽管我在粘贴之前将其从配置文件中剪切掉，但是我已经将其配置为用于消息跟踪和日志记录，以下是记录的内容:

出站:

<MessageLogTraceRecord>
<HttpRequest xmlns="http://schemas.microsoft.com/2004/06/ServiceModel/Management/MessageTrace">
<Method>POST</Method>
<QueryString></QueryString>
<WebHeaders>
<VsDebuggerCausalityData>gibberish</VsDebuggerCausalityData>
</WebHeaders>
</HttpRequest>
<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope" xmlns:a="http://www.w3.org/2005/08/addressing">
<s:Header>
<a:Action s:mustUnderstand="1">http://localhost:8080/getRecordDoc</a:Action>
<a:MessageID>urn:uuid:19966f2b-b5ed-4e30-8bd9-9180fbf527bf</a:MessageID>
<ActivityId CorrelationId="9e356eb4-cbdc-407d-991b-49ed1b831037" xmlns="http://schemas.microsoft.com/2004/09/ServiceModel/Diagnostics">95e158bd-51e7-4fe6-900b-642728f0653e</ActivityId>
<a:ReplyTo>
<a:Address>http://www.w3.org/2005/08/addressing/anonymous</a:Address>
</a:ReplyTo>
<a:To s:mustUnderstand="1">https://www.<redacted>.com/services/WsApiService/</a:To>
</s:Header>
<s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<getRecordDoc xmlns="http://www.<redacted>.com/ws/schemas">
<username xmlns="">username0000</username>
<ID xmlns="">1234567</ID>
</getRecordDoc>
</s:Body>
</s:Envelope>
</MessageLogTraceRecord>

这是响应:

<MessageLogTraceRecord><![CDATA[

--MIMEBoundaryurn_uuid_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Content-Type: text/xml; charset=UTF-8
Content-Transfer-Encoding: binary
Content-ID: <0.urn:uuid:[email protected]>

<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"><soapenv:Body><ns1:getRecordDocResponse xmlns:ns1="http://www.<redacted>.com/ws/schemas"><doc><xop:Include href="cid:1.urn:uuid:[email protected]" xmlns:xop="http://www.w3.org/2004/08/xop/include"/></doc></ns1:getRecordDocResponse></soapenv:Body></soapenv:Envelope>
--MIMEBoundaryurn_uuid_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Content-Type: application/octet-stream
Content-Transfer-Encoding: binary
Content-ID: <1.urn:uuid:[email protected]>

%PDF-1.5
(blah blah blah Wingdings!)

--MIMEBoundaryurn_uuid_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx--
]]></MessageLogTraceRecord>

跟踪日志显示“Construct ChannelFactory”和“Open ClientBase”步骤已成功完成，但是当尝试执行“Process action http://localhost:8080/getRecordDoc”时，启动事件边界后失败，如下所示:

<E2ETraceEvent xmlns="http://schemas.microsoft.com/2004/06/E2ETraceEvent">
<System xmlns="http://schemas.microsoft.com/2004/06/windows/eventlog/system">
<EventID>131075</EventID>
<Type>3</Type>
<SubType Name="Error">0</SubType>
<Level>2</Level>
<TimeCreated SystemTime="2013-06-17T19:10:31.2623643Z" />
<Source Name="System.ServiceModel" />
<Correlation ActivityID="{xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx}" />
<Execution ProcessName="Client.vshost" ProcessID="12040" ThreadID="10" />
<Channel />
<Computer>computer</Computer>
</System>
<ApplicationData>
<TraceData>
<DataItem>
<TraceRecord xmlns="http://schemas.microsoft.com/2004/10/E2ETraceEvent/TraceRecord" Severity="Error">
<TraceIdentifier>http://msdn.microsoft.com/en-US/library/System.ServiceModel.Diagnostics.ThrowingException.aspx</TraceIdentifier>
<Description>Throwing an exception.</Description>
<AppDomain>Client.vshost.exe</AppDomain>
<Exception>
<ExceptionType>System.ServiceModel.CommunicationException, System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=publickeytokeninfo</ExceptionType>
<Message>Error creating a reader for the MTOM message</Message>
<StackTrace>
at System.ServiceModel.Channels.MtomMessageEncoder.MtomBufferedMessageData.TakeXmlReader()
at System.ServiceModel.Channels.BufferedMessageData.DoTakeXmlReader()
at System.ServiceModel.Channels.BufferedMessageData.GetMessageReader()
at System.ServiceModel.Channels.BufferedMessage..ctor(IBufferedMessageData messageData, RecycledMessageState recycledMessageState, Boolean[] understoodHeaders, Boolean understoodHeadersModified)
at System.ServiceModel.Channels.BufferedMessage..ctor(IBufferedMessageData messageData, RecycledMessageState recycledMessageState)
at System.ServiceModel.Channels.MtomMessageEncoder.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&amp; 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.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs)
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData&amp; msgData, Int32 type)
at WsApiServicePortType.getRecordDoc(getRecordDocRequest request)
at WsApiServicePortTypeClient.WsApiServicePortType.getRecordDoc(getRecordDocRequest request)
at WsApiServicePortTypeClient.getRecordDoc(String username, String stiId)
at Client.Program.Main(String[] args)
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
</StackTrace>
<ExceptionString>System.ServiceModel.CommunicationException: Error creating a reader for the MTOM message ---&gt; System.Xml.XmlException: MTOM messages must have type 'application/xop+xml'.
   at System.Xml.XmlMtomReader.ReadMessageContentTypeHeader(ContentTypeHeader header, String&amp; boundary, String&amp; start, String&amp; startInfo)
   at System.Xml.XmlMtomReader.Initialize(Stream stream, String contentType, XmlDictionaryReaderQuotas quotas, Int32 maxBufferSize)
   at System.Xml.XmlMtomReader.SetInput(Stream stream, Encoding[] encodings, String contentType, XmlDictionaryReaderQuotas quotas, Int32 maxBufferSize, OnXmlDictionaryReaderClose onClose)
   at System.Xml.XmlMtomReader.SetInput(Byte[] buffer, Int32 offset, Int32 count, Encoding[] encodings, String contentType, XmlDictionaryReaderQuotas quotas, Int32 maxBufferSize, OnXmlDictionaryReaderClose onClose)
   at System.Xml.XmlDictionaryReader.CreateMtomReader(Byte[] buffer, Int32 offset, Int32 count, Encoding[] encodings, String contentType, XmlDictionaryReaderQuotas quotas, Int32 maxBufferSize, OnXmlDictionaryReaderClose onClose)
   at System.ServiceModel.Channels.MtomMessageEncoder.MtomBufferedMessageData.TakeXmlReader()
   --- End of inner exception stack trace ---</ExceptionString>
<InnerException>
<ExceptionType>System.Xml.XmlException, System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=publickeytokeninfo</ExceptionType>
<Message>MTOM messages must have type 'application/xop+xml'.</Message>
<StackTrace>
at System.Xml.XmlMtomReader.ReadMessageContentTypeHeader(ContentTypeHeader header, String&amp; boundary, String&amp; start, String&amp; startInfo)
at System.Xml.XmlMtomReader.Initialize(Stream stream, String contentType, XmlDictionaryReaderQuotas quotas, Int32 maxBufferSize)
at System.Xml.XmlMtomReader.SetInput(Stream stream, Encoding[] encodings, String contentType, XmlDictionaryReaderQuotas quotas, Int32 maxBufferSize, OnXmlDictionaryReaderClose onClose)
at System.Xml.XmlMtomReader.SetInput(Byte[] buffer, Int32 offset, Int32 count, Encoding[] encodings, String contentType, XmlDictionaryReaderQuotas quotas, Int32 maxBufferSize, OnXmlDictionaryReaderClose onClose)
at System.Xml.XmlDictionaryReader.CreateMtomReader(Byte[] buffer, Int32 offset, Int32 count, Encoding[] encodings, String contentType, XmlDictionaryReaderQuotas quotas, Int32 maxBufferSize, OnXmlDictionaryReaderClose onClose)
at System.ServiceModel.Channels.MtomMessageEncoder.MtomBufferedMessageData.TakeXmlReader()
</StackTrace>
<ExceptionString>System.Xml.XmlException: MTOM messages must have type 'application/xop+xml'.
   at System.Xml.XmlMtomReader.ReadMessageContentTypeHeader(ContentTypeHeader header, String&amp; boundary, String&amp; start, String&amp; startInfo)
   at System.Xml.XmlMtomReader.Initialize(Stream stream, String contentType, XmlDictionaryReaderQuotas quotas, Int32 maxBufferSize)
   at System.Xml.XmlMtomReader.SetInput(Stream stream, Encoding[] encodings, String contentType, XmlDictionaryReaderQuotas quotas, Int32 maxBufferSize, OnXmlDictionaryReaderClose onClose)
   at System.Xml.XmlMtomReader.SetInput(Byte[] buffer, Int32 offset, Int32 count, Encoding[] encodings, String contentType, XmlDictionaryReaderQuotas quotas, Int32 maxBufferSize, OnXmlDictionaryReaderClose onClose)
   at System.Xml.XmlDictionaryReader.CreateMtomReader(Byte[] buffer, Int32 offset, Int32 count, Encoding[] encodings, String contentType, XmlDictionaryReaderQuotas quotas, Int32 maxBufferSize, OnXmlDictionaryReaderClose onClose)
   at System.ServiceModel.Channels.MtomMessageEncoder.MtomBufferedMessageData.TakeXmlReader()</ExceptionString>
</InnerException>
</Exception>
</TraceRecord>
</DataItem>
</TraceData>
</ApplicationData>
</E2ETraceEvent>

我认为这与契约(Contract)包装有关，如代理类文件中的CODEGEN消息所示。但是，我找不到关于该消息的任何信息，这可以证实这一点。

任何帮助是极大的赞赏。

最佳答案

更新:正如@Tone在评论中提到的那样，下面原来接受的答案是错误的。实际上，MTOM HTTP响应 header 的外部Content-Type具有值“multipart/related”是有效的(并且是必需的)。这是原始海报收到的标题:

Content-Type    multipart/related; boundary="MIMEBoundaryurn_uuid_xxxxxxxxxxxxxxxxxxxxxxxxxxxx"; start-info="text/xml"; type="text/xml"; start="<0.urn:uuid:[email protected]>"

真正的问题似乎是“类型”属性是“文本/xml”，而不是“应用程序/xop + xml”。

==============================================

原始答案:

这里的Content-Type header 是“多部分/相关的”。这不是要发送MTOM响应的正确标题，因此我认为这是服务器错误。作为异常(exception)，“MTOM消息必须具有(内容)类型'application/xop + xml'”。尝试在服务器上对其进行硬编码，或者临时在某些代理中对其进行更改，以查看wcf是否可以工作(您也可以尝试使用wcf自定义消息编码器，应重写一个属性-ContentType-以返回正确的类型)。请注意，有二进制有效负载(文件附件)标准允许内容类型为“multipart/related”，但wcf不支持它们。但是，这里的消息有效负载使用了标记，因此我相信服务器的确意味着发送mtom，但未使用正确的内容类型 header 。

顺便说一句，我为wcf提到的另一个附件标准是here is an implementaion。可能对您有用，pdf文件将在某些属性中提供。但另一方面，由于xml使用它可能无效，因此无论如何您可能都需要在编码器中对其进行调整。因此最好的办法是解决服务器中的根本问题。

关于c# - WCF: "Error creating reader for MTOM message"，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/17175231/