服务出错 ServiceHost 仅支持类服务类型

Question

我正在尝试发布一项服务并让它使用 Windows 身份验证，但我什至在尝试发布它时遇到了一个错误，所以我还没有走得足够远，无法提示输入用户名。

这是我的错误：

[ArgumentException: ServiceHost only supports class service types.]
   System.ServiceModel.Description.ServiceDescription.GetService(Type serviceType) +16602430
   System.ServiceModel.ServiceHost.CreateDescription(IDictionary`2& implementedContracts) +80
   System.ServiceModel.ServiceHostBase.InitializeDescription(UriSchemeKeyedCollection baseAddresses) +174
   System.ServiceModel.ServiceHost..ctor(Type serviceType, Uri[] baseAddresses) +475
   System.ServiceModel.Activation.ServiceHostFactory.CreateServiceHost(Type serviceType, Uri[] baseAddresses) +43
   System.ServiceModel.Activation.ServiceHostFactory.CreateServiceHost(String constructorString, Uri[] baseAddresses) +530
   System.ServiceModel.HostingManager.CreateService(String normalizedVirtualPath) +1413
   System.ServiceModel.HostingManager.ActivateService(String normalizedVirtualPath) +50
   System.ServiceModel.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath) +1172

[ServiceActivationException: The service '/subservice/ISubService.svc' cannot be activated due to an exception during compilation.  The exception message is: ServiceHost only supports class service types..]
   System.Runtime.AsyncResult.End(IAsyncResult result) +901424
   System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result) +178638
   System.Web.CallHandlerExecutionStep.OnAsyncHandlerCompletion(IAsyncResult ar) +136

我已经对此进行了一百次研究，但我对发布服务的经验很少。一旦他们建成，我就与他们合作过，只是从未发布过。

这是我的 web.config，我从另一个可以正常发布的 web.config 修改：

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <appSettings>
    <add key="log4net.Internal.Debug" value="true" />
  </appSettings>
  <system.web>
    <compilation targetFramework="4.0" debug="true">
      <assemblies>
        <add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
      </assemblies>
    </compilation>
    <caching>
      <outputCacheSettings>
        <outputCacheProfiles>
          <add name="DefaultCache" duration="60" varyByParam="none" />
        </outputCacheProfiles>
      </outputCacheSettings>
    </caching>
  </system.web>
  <system.serviceModel>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" aspNetCompatibilityEnabled="true" />
    <bindings>
      <basicHttpBinding>
        <binding name="BasicHttpEndpointBinding">
          <security mode="None">
            <!-- Basic <security mode="Transport"> -->
            <!-- To use Basic auth, just comment Windows and use this, but you need to configure basic in IIS as well -->
            <!-- <transport clientCredentialType="Basic" /> -->
            <transport clientCredentialType="None" />
          </security>
        </binding>
      </basicHttpBinding>
      <webHttpBinding>
        <binding name="default">
          <security mode="None">
            <!-- Basic <security mode="Transport"> -->
            <!-- To use Basic auth, just comment Windows and use this -->
            <!-- <transport clientCredentialType="Basic" /> -->
            <transport clientCredentialType="None" />
          </security>
        </binding>
      </webHttpBinding>
    </bindings>
    <behaviors>
      <serviceBehaviors>
        <behavior>
          <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
          <serviceMetadata httpGetEnabled="true" />
          <!-- To receive exception details in faults for debugging purposes, set the value below to true.  Set to false before deployment to avoid disclosing exception information -->
          <serviceDebug includeExceptionDetailInFaults="true" />
        </behavior>
      </serviceBehaviors>
      <endpointBehaviors>
        <behavior name="restBehavior">
          <webHttp />
        </behavior>
      </endpointBehaviors>
    </behaviors>
    <services>
      <service name="subservice.ISubService">
        <endpoint binding="basicHttpBinding" bindingConfiguration="BasicHttpEndpointBinding" contract="subservice.ISubService">
          <identity>
            <dns value="localhost" />
          </identity>
        </endpoint>
        <endpoint address="rest" binding="webHttpBinding" bindingConfiguration="default" behaviorConfiguration="restBehavior" contract="subservice.ISubService">
          <identity>
            <dns value="localhost" />
          </identity>
        </endpoint>
      </service>
    </services>
  </system.serviceModel>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true" />
    <httpProtocol>
      <customHeaders>
        <add name="p3p" value="CP=&quot;CAO PSA OUR&quot;" />
      </customHeaders>
    </httpProtocol>
  </system.webServer>

</configuration>

我的 web.release.config 中没有任何内容：

<?xml version="1.0"?>

<!-- For more information on using web.config transformation visit http://go.microsoft.com/fwlink/?LinkId=125889 -->

<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">

  <system.web>
    <compilation xdt:Transform="RemoveAttributes(debug)" />
  </system.web>

</configuration>

这是我的应用程序的样子：

有人知道我做错了吗？

Answer 1

错误表明您使用 Interface 类型来构造主机，而不是实现您的服务接口 ISubService 的类类型。

例如。

ServiceHost host = new ServiceHost(
                       typeof(subservice.ISubService), new Uri("someuri"));

如果这是您的用法，请将其更改为使用已实现的服务类类型ISubService

ServiceHost host = new ServiceHost(
                       typeof(subservice.SubService), new Uri("someuri"));

如果在 .svc 中配置服务则：

<%@ServiceHost Service="subservice.SubService"%>

同样在您的配置文件中，将服务名称更改为服务而不是服务合同：

   <services>
          <service name="subservice.SubService">
          ...