WCF MaxArrayLength 更改设置不会保留

Question

我正在尝试使用 WCF 上传文件。 16K 以下的所有内容都可以正常工作，但任何超过 16K 的内容都会引发此错误：

反序列化 System.Byte[] 类型的对象时出错。读取 XML 数据时超出了最大数组长度配额 (16384)。可以通过更改创建 XML 读取器时使用的 XmlDictionaryReaderQuotas 对象上的 MaxArrayLength 属性来增加此配额。

这是我的 WCF 服务 app.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>

  <system.web>
    <compilation debug="true" />
  </system.web>
  <!-- When deploying the service library project, the content of the config file must be added to the host's 
  app.config file. System.Configuration does not support config files for libraries. -->
  <system.serviceModel>
    <bindings>
      <wsHttpBinding>
        <binding name="WSHttpBinding_IRAISAPI" closeTimeout="00:01:00"
          openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
          bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard"
          maxBufferPoolSize="50000000" maxReceivedMessageSize="50000000"
          messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true"
          allowCookies="false">
          <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="104857600"
            maxBytesPerRead="4096" maxNameTableCharCount="16384" />
          <reliableSession ordered="true" inactivityTimeout="00:10:00"
            enabled="false" />
          <security mode="Message">
            <transport clientCredentialType="Windows" proxyCredentialType="None"
              realm="" />
            <message clientCredentialType="Windows" negotiateServiceCredential="true"
              algorithmSuite="Default" />
          </security>
        </binding>
      </wsHttpBinding>
    </bindings>
    <services>
      <service name="RAIS_WCF_Services.RAISAPI">
        <endpoint address="" binding="wsHttpBinding" contract="RAIS_WCF_Services.IRAISAPI">
          <identity>
            <dns value="localhost" />
          </identity>
        </endpoint>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8732/Design_Time_Addresses/RAIS_WCF_Services/Service1/" />
          </baseAddresses>
        </host>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior>
          <serviceMetadata httpGetEnabled="True"/>
          <serviceDebug includeExceptionDetailInFaults="True" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>

</configuration>

，这是我的客户端 app.config

    <?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0,Profile=Client" />
  </startup>
  <system.serviceModel>
    <bindings>
      <wsHttpBinding>
        <binding name="WSHttpBinding_IRAISAPI" closeTimeout="00:01:00"
          openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
          bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard"
          maxBufferPoolSize="50000000" maxReceivedMessageSize="50000000"
          messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true"
          allowCookies="false">
          <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="104857600"
            maxBytesPerRead="4096" maxNameTableCharCount="16384" />
          <reliableSession ordered="true" inactivityTimeout="00:10:00"
            enabled="false" />
          <security mode="Message">
            <transport clientCredentialType="Windows" proxyCredentialType="None"
              realm="" />
            <message clientCredentialType="Windows" negotiateServiceCredential="true"
              algorithmSuite="Default" />
          </security>
        </binding>
      </wsHttpBinding>
    </bindings>
    <client>
      <endpoint address="http://localhost:8732/Design_Time_Addresses/RAIS_WCF_Services/Service1/"
        binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_IRAISAPI"
        contract="RAIS.IRAISAPI" name="WSHttpBinding_IRAISAPI">
        <identity>
          <dns value="localhost" />
        </identity>
      </endpoint>
    </client>
  </system.serviceModel>
</configuration>

非常感谢任何帮助！谢谢。

Answer 1

您的服务似乎没有正确引用您的绑定配置。

在服务配置中搜索 WSHttpBinding_IRAISAPI，您就会明白我的意思。

您需要：

    <endpoint address="" binding="wsHttpBinding" 
              contract="RAIS_WCF_Services.IRAISAPI"  
              bindingConfiguration="WSHttpBinding_IRAISAPI">
      <identity>
        <dns value="localhost" />
      </identity>
    </endpoint>

Answer 2

我假设您的意思是在添加服务引用后不会在客户端配置中自动设置 maxArrayLength 设置和/或在更新客户端的服务引用后它会丢失？如果这就是您遇到的情况，这是设计使然。超时、maxArrayLength 等设置不会在 WSDL 中公开，因此在创建/更新服务引用时服务无法将其推送到客户端。

Answer 3

尝试将此全局配置添加到服务器端配置中。这会将您的服务绑定绑定到绑定配置。

<system.serviceModel>
    <protocolMapping>
      <remove scheme="http"/>
      <add scheme="http" binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_IRAISAPI" />
    </protocolMapping>
</system.serviceModel>

您还可以使用behaviors/serviceBehaviors/behavior/serviceMetadata/httpGetBindingConfiguration来获得更加本地化的解决方案。