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我正在尝试将数据文件上传到 WCF 服务，它适用于小文件。但是，当我尝试上传大小为 2MB 的文件时，我只会收到错误 400 Bad Request。

由于它适用于小文件，我不得不认为最大大小限制存在问题，但我已经增加了它们，我仍然得到同样的错误。

感谢您帮助我走向正确的方向。谢谢 ：）

我在 WCF 服务中使用以下配置。

这是服务配置

 <!-- WIZARD FILE UPLOAD CONFIGURATION -->
  <service behaviorConfiguration="BBS.eBillity.Services.ServiceBehavior" name="BBS.eBillity.Services.Modules.IWizardUploadFile">
    <endpoint address="" binding="basicHttpBinding" bindingConfiguration="WizardUploadFile_StreamedBinding"
     contract="BBS.eBillity.Services.Contracts.ServicesContracts.IWizardUploadFile">
      <identity>
        <dns value="localhost" />
      </identity>
    </endpoint>
  </service>

服务的绑定配置

<binding name="WizardUploadFile_StreamedBinding" maxReceivedMessageSize="2147483647" maxBufferSize="2147483647"
             transferMode="StreamedRequest" closeTimeout="04:01:00"
 openTimeout="04:01:00" receiveTimeout="04:10:00" sendTimeout="04:01:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
              maxBufferPoolSize="2147483647"   useDefaultWebProxy="true">
      <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647"
           maxArrayLength="2147483647" maxBytesPerRead="2147483647"
           maxNameTableCharCount="2147483647"/>
    </binding>

服务合同，很简单...

[ServiceContract]
public interface IWizardUploadFile
{

    [OperationContract]
    void UploadFiletoServer(Stream request);

}

在 system.web 标记内，我在客户端和服务器配置文件中添加了以下内容

<httpRuntime maxRequestLength="2147483647" />

这是客户端配置：

 <basicHttpBinding>

 <binding name="BasicHttpBinding_IWizardUploadFile" closeTimeout="04:01:00"
 openTimeout="04:01:00" receiveTimeout="04:10:00" sendTimeout="04:01:00"
 allowCookies="false" bypassProxyOnLocal="false"
 hostNameComparisonMode="StrongWildcard"
 maxBufferSize="2147483647" maxBufferPoolSize="2147483647"
 maxReceivedMessageSize="2147483647"
      transferMode="Streamed"
 useDefaultWebProxy="true">
   <readerQuotas maxDepth="2147483647"
       maxStringContentLength="2147483647" maxArrayLength="2147483647"
       maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
   <security mode="None">
     <transport clientCredentialType="None"
             proxyCredentialType="None" realm="" />
     <message clientCredentialType="UserName" algorithmSuite="Default" />
   </security>
 </binding>

端点配置

<endpoint address="http://localhost:1234/WCFeBillity/WizardUploadFile.svc"
binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_IWizardUploadFile"
contract="WizardUploadFile.IWizardUploadFile" name="BasicHttpBinding_IWizardUploadFile" />
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