WCF服务在远程计算机上不起作用

Question

我创建了一个在localhost上运行良好的WCF服务，但它在远程计算机上不起作用。它给我一个错误信息：

The type 'BusinessLetters.SqlWebSyncService', provided as the Service attribute value in the ServiceHost directive, or provided in the configuration element system.serviceModel/serviceHostingEnvironment/serviceActivations could not be found.

我的源代码如下。

服务标记文件代码：

<%@ ServiceHost Language="C#" Debug="true" Service="BusinessLetters.SqlWebSyncService" CodeBehind="SqlWebSyncService.svc.cs" %>

代码背后：

namespace BusinessLetters
{
    [ServiceBehavior(InstanceContextMode = InstanceContextMode.PerSession)]
    [AspNetCompatibilityRequirements(
        RequirementsMode = AspNetCompatibilityRequirementsMode.Required)]

    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the class name "SqlWebSyncService" in code, svc and config file together.
    public class SqlWebSyncService : ISqlWebSyncService
    {
    }
}

接口：

namespace BusinessLetters
{
    [ServiceContract(SessionMode = SessionMode.Required)] // Important attribute
    [ServiceKnownType(typeof(SyncIdFormatGroup))]
    [ServiceKnownType(typeof(DbSyncContext))]
    [ServiceKnownType(typeof(SyncSchema))]
    [ServiceKnownType(typeof(WebSyncFaultException))]
    [ServiceKnownType(typeof(SyncBatchParameters))]
    [ServiceKnownType(typeof(GetChangesParameters))]
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the interface name "ISqlWebSyncService" in both code and config file together.

    public interface ISqlWebSyncService
    {
    }
}

Web配置：

<?xml version="1.0"?>
<configuration>
  <appSettings>   
    <add key="ValidationSettings:UnobtrusiveValidationMode" value="None" />
  </appSettings>
  <connectionStrings>

  </connectionStrings>
  <system.web>
    <pages>     
    </pages>
    <httpRuntime maxRequestLength="2000000" />
    <compilation debug="true" targetFramework="4.0">
      <assemblies>

      </assemblies>
    </compilation>    
    <customErrors mode="Off">
      <error statusCode="404" redirect="/error.aspx" />
    </customErrors>   

  </system.web>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true" />
    <validation validateIntegratedModeConfiguration="false" />       
    <directoryBrowse enabled="true" />
  </system.webServer>

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

    <services>
      <service name="BusinessLetters.SqlWebSyncService"  behaviorConfiguration="abc">
        <endpoint address="" binding="wsHttpBinding"
                  bindingConfiguration="largeMessageHttpBinding"
          contract="BusinessLetters.ISqlWebSyncService">

        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
      </service> 
    </services>

    <bindings>
      <wsHttpBinding>
        <binding name="largeMessageHttpBinding" maxReceivedMessageSize="104857600"  closeTimeout="00:25:00" openTimeout="00:25:00"
          receiveTimeout="00:25:00" sendTimeout="01:50:00">
          <readerQuotas maxArrayLength="104857600"/>
          <security mode="None" />
          <reliableSession enabled="true" />
        </binding>
      </wsHttpBinding>
    </bindings>

    <behaviors>
      <serviceBehaviors>
        <behavior name="abc">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="false" />
        </behavior>
      </serviceBehaviors>
    </behaviors>

    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
  </system.serviceModel>
</configuration>

请帮我解决。