WFC + javascript MaxStringContentLength问题

Question

我正在使用JavaScript代码访问WCF服务。

<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true">
    <Services>
        <asp:ServiceReference Path="ForumService.svc" />
    </Services>
</asp:ScriptManager>

在web.config中

<system.serviceModel>
    <diagnostics>
      <messageLogging logMalformedMessages="true" logMessagesAtTransportLevel="true" />
    </diagnostics>
    <serviceHostingEnvironment />
    <bindings>
      <wsHttpBinding>
        <binding name="WSHttpBinding_ITranscriptService" closeTimeout="00:10:00" openTimeout="00:10:00" receiveTimeout="00:10:00" sendTimeout="00:10:00" bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="524288" maxReceivedMessageSize="2147483647" messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true" allowCookies="false">
          <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647"/>
          <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" establishSecurityContext="true"/>
          </security>
        </binding>
      </wsHttpBinding>
    </bindings>
    <client>
      <endpoint address="http://localhost:10780/TranscriptService.svc" binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_ITranscriptService" contract="TVServiceReference.ITranscriptService" name="WSHttpBinding_ITranscriptService">
        <identity>
          <dns value="localhost"/>
        </identity>
      </endpoint>
    </client>
    <behaviors>
      <endpointBehaviors>
        <behavior  name="WebTV.ForumServiceAspNetAjaxBehavior">
          <enableWebScript />
        </behavior>
      </endpointBehaviors>
      <serviceBehaviors>
        <behavior name="WebTV.TranscriptServiceBehavior" >
          <serviceMetadata httpGetEnabled="true"/>
          <serviceDebug includeExceptionDetailInFaults="true"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <services>
      <service behaviorConfiguration="WebTV.TranscriptServiceBehavior"
        name="WebTV.TranscriptService">
        <endpoint address="" binding="wsHttpBinding" contract="WebTV.ITranscriptService">
          <identity>
            <dns value="localhost" />
          </identity>
        </endpoint>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
      </service>
      <service behaviorConfiguration="WebTV.TranscriptServiceBehavior" name="WebTV.ForumService">
        <endpoint address="" behaviorConfiguration="WebTV.ForumServiceAspNetAjaxBehavior"
          binding="webHttpBinding"    contract="WebTV.ForumService" />
      </service>
    </services>
  </system.serviceModel>

现在的问题是，当我传递大量字符串值时，我会得到一个异常

InnerException消息为‘对System.String类型的对象进行反序列化时出错。读取XML数据时超出了最大字符串内容长度配额(8192)。

如何使用JavaScript为其设置MaxStringContentLength值？

有什么建议吗？

谢谢-Aruna

Answer 1

经过几个小时的谷歌搜索，我发现了怎么做，

需要在初始化svc文件时绑定设置。

创建自定义类，

   public class DerivedFactory : ServiceHostFactory
   {
       protected override ServiceHost CreateServiceHost
                                   (Type t, Uri[] baseAddresses)
       {
        ServiceHost host = base.CreateServiceHost(t, baseAddresses);
        WebHttpBinding binding = new WebHttpBinding();
        binding.Security.Mode = WebHttpSecurityMode.None;
        binding.Security.Transport.ClientCredentialType 
                                   = HttpClientCredentialType.None;
        binding.MaxReceivedMessageSize = Int32.MaxValue;
        binding.ReaderQuotas.MaxStringContentLength = Int32.MaxValue;
        binding.ReaderQuotas.MaxArrayLength = Int32.MaxValue;
        host.Description.Endpoints[0].Binding = binding; 
        return host;
        } 
   }

将.svc文件头追加到

<%@ ServiceHost Factory="WebTV.DerivedFactory“

Language="C#“Debug=”Language=“Service="WebTV.ForumService”CodeBehind="ForumService.svc.cs“%>

。您可能希望使用记事本打开它，因为VS编辑器直接转到代码隐藏文件。

这里重要的部分是Factory="WebTV.DerivedFactory“

祝好运!