Question

我有一个使用wsHttpBinding的WCF服务。服务器配置如下：

<bindings>
      <wsHttpBinding>
        <binding name="wsHttpBinding" maxBufferPoolSize="2147483647"
          maxReceivedMessageSize="2147483647">
          <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647"
            maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
          <security mode="None">
            <transport clientCredentialType="Windows" proxyCredentialType="None"
              realm="" />
            <message clientCredentialType="Windows" negotiateServiceCredential="true"
              algorithmSuite="Default" establishSecurityContext="true" />
          </security>
        </binding>
      </wsHttpBinding>
    </bindings>

在客户端，我包括WCF服务的服务参考。如果我的功能有限，在我的IService中说90操作合同但是如果再添加一个OperationContract而不是我无法更新服务引用，我也能够添加该服务引用。在this文章中提到通过更改这些配置文件（即devenv.exe.config，WcfTestClient.exe.config和SvcUtil.exe.config）它会工作，但即使包括那些配置文件中的那些绑定仍然是该错误弹出说

下载“http://10.0.3.112/MyService/Service1.svc/mex”时出错。请求失败，HTTP状态为400：错误请求。元数据包含无法解析的引用：“http://10.0.3.112/MyService/Service1.svc/mex”。 XML文档中存在错误（1,89549）。读取XML数据时已超出最大名称字符集计数配额（16384）。 nametable是用于存储XML处理期间遇到的字符串的数据结构 - 具有非重复元素名称，属性名称和属性值的长XML文档可能会触发此配额。通过更改创建XML阅读器时使用的XmlDictionaryReaderQuotas对象上的MaxNameTableCharCount属性，可以增加此配额。第1行，位置89549。如果在当前解决方案中定义了服务，请尝试构建解决方案并再次添加服务引用。

任何想法如何解决这个????

Answer 1

尝试以下方法：

在devenv.exe所在的Visual Studio的安装目录中（例如C：\ Program Files \ Microsoft Visual Studio 9.0 \ Common7 \ IDE），将此部分添加到devenv.exe.cofig

<system.serviceModel>
<client>
  <endpoint binding="customBinding" bindingConfiguration="largeServiceBinding" contract="IMetadataExchange" name="http" />
</client>

<bindings>
  <customBinding>
    <!-- NOTE: The binding name must be the same as specified in the config file of the wcf service -->
    <binding name="largeServiceBinding" >
      <textMessageEncoding>
        <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
      </textMessageEncoding>

      <httpTransport transferMode="Buffered" maxReceivedMessageSize="2147483647" maxBufferSize="2147483647"/>
    </binding>

  </customBinding>
</bindings>
</system.serviceModel>

在您的WCF服务的app.config中添加相同的绑定：

<bindings>
  <customBinding >
    <!-- NOTE: The binding name must be the same as specified in the devenv.exe.config file located ..\Common7\IDE folder of the VS installation directory -->
    <binding name="largeServiceBinding" >
      <textMessageEncoding>
        <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647"
          maxNameTableCharCount="2147483647" />
      </textMessageEncoding>
      <httpTransport transferMode="Buffered" maxReceivedMessageSize="2147483647" maxBufferSize="2147483647"/>
    </binding>
  </customBinding>
</bindings>

请注意，两个文件中绑定标记的name属性必须匹配（例如largeServiceBinding）

最后将以下mex端点添加到您的服务标签中：

 <endpoint address="mex" binding="customBinding" contract="IMetadataExchange" bindingName="testBinding" bindingConfiguration="largeServiceBinding" name="http"/>

这可能如下所示：

 <services>
  <service behaviorConfiguration="MyServiceBehavior"
    name="MyService.MyService">
    <endpoint address="" binding="wsHttpBinding" contract="MyService.IMyService">
      <identity>
        <dns value="localhost" />
      </identity>
    </endpoint>
    <endpoint address="mex" binding="customBinding" contract="IMetadataExchange" bindingName="testBinding" bindingConfiguration="largeServiceBinding" name="http"/>
    <host>
      <baseAddresses>
        <add baseAddress="http://localhost:8731/Design_Time_Addresses/MyService/MyService/" />
      </baseAddresses>
    </host>
  </service>
</services>

Answer 2

我知道它已经有一段时间了，但我遇到了同样的问题并找到了其他（更简单的）解决方案in codeproject

在给定的解决方案中，值在代码中而不是.config文件中设置。

        BasicHttpBinding binding = new BasicHttpBinding();
        binding.Security.Mode = BasicHttpSecurityMode.Transport;
        binding.Security.Transport.ClientCredentialType = HttpClientCredentialType.Windows;
        binding.MaxReceivedMessageSize = 50000000;
        binding.ReaderQuotas.MaxArrayLength = 50000000;
        binding.ReaderQuotas.MaxStringContentLength = 50000000;
        binding.ReaderQuotas.MaxNameTableCharCount = 50000000;
        EndpointAddress endpoint = new EndpointAddress(new Uri("https://server/EWS/Exchange.asmx"));
        ExchangeServicePortTypeClient ews = new ExchangeServicePortTypeClient(binding, endpoint);

但是，我更改了.config文件中相关值的值（在<binding>和<readerQuotas>部分中）并解决了问题（而不是添加自定义绑定）：

                <binding name="ITransactionProcessor" closeTimeout="00:01:00"
                    openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
                    allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
                    maxBufferSize="50000000" maxBufferPoolSize="524288" maxReceivedMessageSize="50000000"
                    messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
                    useDefaultWebProxy="true">
                    <readerQuotas maxDepth="32" maxStringContentLength="50000000" maxArrayLength="50000000"
                        maxBytesPerRead="4096" maxNameTableCharCount="50000000" />
                    <security mode="TransportWithMessageCredential">
                        <transport clientCredentialType="None" proxyCredentialType="None" 
                            realm="" />
                        <message clientCredentialType="UserName" algorithmSuite="Default" />
                    </security>
                </binding>

我希望这会对某人有所帮助:)。

Answer 3

要认识到的一点是，消息是指svcutil读者配额而不是服务配额！ Svcutil对可读取的元数据数量有限制。可以使用配置文件更改此限制。解决方案是为svcutil创建一个配置文件，并将其放在与该工具相同的文件夹中。下次运行svcutil时，将考虑配置文件值。

http://geekswithblogs.net/claraoscura/archive/2007/08/20/114806.aspx

Answer 4

在您的app.config或客户端上的dll.config中添加：

<configuration>
<system.serviceModel>
<bindings>
<netTcpBinding>
<binding name="myMex" maxReceivedMessageSize="1024000"> <!-- modify this to avoid stupid error -->
<readerQuotas maxNameTableCharCount="163840" /> <!-- DO NOT touch this one -->
<security mode="None" />
</binding>
</netTcpBinding>
</bindings>

...

<client>
<endpoint binding="netTcpBinding" bindingConfiguration="myMex"
contract="IMetadataExchange" name="net.tcp" />

...

        </client>
    </system.serviceModel>
</configuration>

你去吧！这是WCF真正讨厌的事情之一，因为谷歌经常会产生很多bs。浪费了大量的时间。

WCF - 读取XML数据时已超出最大名称表字符计数配额（16384）

4 个答案: