无法从后面的代码中覆盖 MaxRecievedMessageSize答案

【问题标题】：Unable to Override MaxRecievedMessageSize from Code Behind无法从后面的代码中覆盖 MaxRecievedMessageSize
【发布时间】：2014-02-13 17:26:52
【问题描述】：

我托管一个 WCF REST 服务并在同一个 webrole 中使用它。配置在代码隐藏中完成。我已经尝试了很多解决方案并在此发布，

但我无法弄清楚为什么我无法覆盖 MaxRecievedMessageSize 。如果大小超过 64kb。它抛出异常。

WebChannelFactory<X> channelFactory;

                if (!ChannelFactories.ContainsKey(endpointName.ToString(CultureInfo.InvariantCulture)))
                {
                    channelFactory = new WebChannelFactory<X>(new Uri(endpointName));

                    lock (ChannelFactories.SyncRoot)
                    {
                        ChannelFactories[endpointName.ToString(CultureInfo.InvariantCulture)] = channelFactory;
                    }
                }
                else
                {
                    channelFactory =
                        ChannelFactories[endpointName.ToString(CultureInfo.InvariantCulture)] as
                        WebChannelFactory<X>;
                }
                //Configure The Size here

                if (channelFactory != null)
                {

                    channelFactory.Endpoint.Binding = new WebHttpBinding
                        {

                            MaxReceivedMessageSize = 2147483647,
                            MaxBufferSize = 2147483647,
                            ReaderQuotas =new XmlDictionaryReaderQuotas()
                                {
                                    MaxArrayLength = 2147483647,
                                    MaxStringContentLength = 2147483647,
                                    MaxDepth = 2147483647,
                                    MaxNameTableCharCount = 2147483647,
                                    MaxBytesPerRead = 2147483647
                                },
                            MaxBufferPoolSize = 2147483647,
                            OpenTimeout = new TimeSpan(0, 0, 10, 0),
                            ReceiveTimeout = new TimeSpan(0, 0, 10, 0),
                            TransferMode = TransferMode.Streamed,
                            CloseTimeout = new TimeSpan(0, 0, 10, 0),
                            SendTimeout = new TimeSpan(0, 0, 10, 0)
                        };

和 Web.Config

<system.serviceModel>
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
    <behaviors>
      <serviceBehaviors>
        <behavior>
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <diagnostics>
      <messageLogging logEntireMessage="true" logMessagesAtServiceLevel="false" logMessagesAtTransportLevel="false" logMalformedMessages="true" maxMessagesToLog="5000" maxSizeOfMessageToLog="2000"></messageLogging>
    </diagnostics>
    <standardEndpoints></standardEndpoints>
  </system.serviceModel>

【问题讨论】：

标签： c# wcf asp.net-mvc-4 .net-4.5

【解决方案1】：

我不相信您可以在创建 WebChannelFactory 后更改它的绑定（但我不能 100% 确定这一点）。创建工厂后，您可以更改的东西很少。很可能它使用WebHttpBinding 的默认值，这就是您获得下限的原因。

尝试创建绑定并将其传递给WebChannelFactory<T> 构造函数重载之一，如下所示：

WebHttpBinding myBinding = new WebHttpBinding
                           {
                               MaxReceivedMessageSize = 2147483647,
                               MaxBufferSize = 2147483647,
                               ReaderQuotas =new XmlDictionaryReaderQuotas()
                               {
                                   MaxArrayLength = 2147483647,
                                   MaxStringContentLength = 2147483647,
                                   MaxDepth = 2147483647,
                                   MaxNameTableCharCount = 2147483647,
                                   MaxBytesPerRead = 2147483647
                               },
                               MaxBufferPoolSize = 2147483647,
                               OpenTimeout = new TimeSpan(0, 0, 10, 0),
                               ReceiveTimeout = new TimeSpan(0, 0, 10, 0),
                               TransferMode = TransferMode.Streamed,
                               CloseTimeout = new TimeSpan(0, 0, 10, 0),
                               SendTimeout = new TimeSpan(0, 0, 10, 0)
                           };

if (!ChannelFactories.ContainsKey(endpointName.ToString(CultureInfo.InvariantCulture)))
{

    // Pass the binding created above and the URI into the constructor
    channelFactory = new WebChannelFactory<X>(myBinding, new Uri(endpointName));

    lock (ChannelFactories.SyncRoot)
    {
        ChannelFactories[endpointName.ToString(CultureInfo.InvariantCulture)] = channelFactory;
    }
}
else
{
    channelFactory = ChannelFactories[endpointName.ToString(CultureInfo.InvariantCulture)] as WebChannelFactory<X>;
}

在上面的代码中，我使用了 WebFactoryChannel<T> 的重载，它接受一个绑定和一个 URI - WebChannelFactory<TChannel> Constructor (Binding, Uri)。

【讨论】：