WCF 上传图片 Stream 异常NotSupportedException

Question

客户端纯HTML的Form上传

    <form action="/FileService.svc/ajaxEndpoint/UploadImage" method="post" enctype="multipart/form-data"> 
        <input  type="file" name="FileData"/>
        <input type="submit"  />
    </form>

服务寄宿IIS，

      </service>
      <service name="Touch_Dinner.Service.FileService"  behaviorConfiguration="BasicBehavior" >
        <endpoint address="/ajaxEndpoint" binding="webHttpBinding" bindingConfiguration="webStream"  behaviorConfiguration="AjaxBehavior" contract="Touch_Dinner.Contract.IFileService" />
      </service>
    </services>
    <bindings>
      <webHttpBinding>
        <binding name="webStream"
               sendTimeout="00:10:00"
               transferMode="Streamed"
               receiveTimeout="00:10:00"
               maxReceivedMessageSize="9223372036854775807">
        </binding>
        <binding name="webBinding" closeTimeout="00:01:00"
                   openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
                   bypassProxyOnLocal="false"  hostNameComparisonMode="StrongWildcard"
                   maxBufferPoolSize="524288" maxReceivedMessageSize="999999" useDefaultWebProxy="true"
                   allowCookies="false">
          <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
              maxBytesPerRead="4096" maxNameTableCharCount="16384" />
        </binding>
      </webHttpBinding>
    </bindings>
    <behaviors>
      <serviceBehaviors>
        <behavior name="BasicBehavior">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="false" />
        </behavior>
      </serviceBehaviors>
      <endpointBehaviors>
        <!--适用于所有Web的Ajax-->
        <behavior name="AjaxBehavior">
          <webHttp/>
        </behavior>
        <!--适用于Asp.net的Ajax-->
        <behavior name="Asp.netAjaxBehavior">
          <enableWebScript/>
        </behavior>
      </endpointBehaviors>

契约与实现

    [ServiceContract]
    public interface IFileService
    {
        [OperationContract]
        void UploadImage(Stream FileData);
    }

    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
    public class FileService:IFileService
    {
        [WebInvoke(Method="*",BodyStyle=WebMessageBodyStyle.Bare)]
        public void UploadImage(Stream FileData)
        {
            long l = FileData.Length;
            return;
        }
    }

测试图片只有10几k,

异常

Stream

Length = “FileData.Length”引发了“System.NotSupportedException”类型的异常

如何解决，无法接收到流