uri 的注册已存在

Question

我正在使用通用 WCF 主机扫描插件文件夹并加载实现类型 "IWebService"

的所有程序集

然后我使用 Ninject 开始托管 wcf 服务。所有配置都在App.config.

当只有一个插件要加载时，这非常有效。

但是当我第二次尝试 start() 时，它抛出一个异常 "A registration already exists for URI"

我在 App.config 中定义了 2 个完全不同的服务，所以我真的很困惑。

这是App.config

 <services>
      <service name="GenericWebService.WebService" behaviorConfiguration="defaultBehavior">
        <host>
          <baseAddresses>
            <!-- note, choose an available port-->
            <add baseAddress="http://localhost:8092/GenericWebService/service" />

          </baseAddresses>
        </host>
        <endpoint address="http://localhost:8092/GenericWebService/service" name="service1" 
                  binding="basicHttpBinding" bindingConfiguration="soapBinding" contract="GenericWebService.ICalculator"/>
      </service>

      <service name="GenericWebService.WebService2" behaviorConfiguration="defaultBehavior">
        <host>
          <baseAddresses>
            <!-- note, choose an available port-->
            <add baseAddress="http://localhost:8093/GenericWebService2/service"/>
          </baseAddresses>
        </host>
        <endpoint address="http://localhost:8093/GenericWebService2/service" name="service2" 
                  binding="basicHttpBinding" bindingConfiguration="soapBinding" contract="GenericWebService.ICalculator2" />
      </service>
    </services>

这是我加载它们并启动主机的方式

private static void StartNinjectSelfHostFromPlugin(IEnumerable<IWebService> webServices )
        {
            foreach (var webService in webServices)
            {
                var ninjectType = (new NinjectServiceSelfHostFactory()).GetType();
                var wcfConfiguration = typeof (NinjectWcfConfiguration)
                    .GetMethod("Create", Type.EmptyTypes)
                    .GetGenericMethodDefinition()
                    .MakeGenericMethod(new[]
                    {webService.GetType(),ninjectType })
                   .Invoke(null, new object[]{});
                var x = new NinjectSelfHostBootstrapper(CreateKernel, wcfConfiguration);
                _selfHostBootstrappers.Add(x);
                x.Start();
            }
        }

如有任何建议，我们将不胜感激。

更新异常

System.InvalidOperationException: The ChannelDispatcher at 'http://localhost:809
2/GenericWebService/service' with contract(s) '"ICalculator"' is unable to open
its IChannelListener. ---> System.InvalidOperationException: A registration alre
ady exists for URI 'http://localhost:8092/GenericWebService/service'.
   at System.ServiceModel.Channels.UriPrefixTable`1.RegisterUri(Uri uri, HostNama
eComparisonMode hostNameComparisonMode, TItem item)
   at System.ServiceModel.Channels.HttpTransportManager.Register(TransportChanne
lListener channelListener)
   at System.ServiceModel.Channels.TransportManager.Open(TransportChannelListene
r channelListener)
   at System.ServiceModel.Channels.TransportManagerContainer.Open(SelectTranspor
tManagersCallback selectTransportManagerCallback)
   at System.ServiceModel.Channels.TransportChannelListener.OnOpen(TimeSpan time
out)
   at System.ServiceModel.Channels.HttpChannelListener`1.OnOpen(TimeSpan timeout
)
   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
   at System.ServiceModel.Dispatcher.ChannelDispatcher.OnOpen(TimeSpan timeout)
   --- End of inner exception stack trace ---
   at System.ServiceModel.Dispatcher.ChannelDispatcher.OnOpen(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
   at System.ServiceModel.ServiceHostBase.OnOpen(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Open()
   at Ninject.Extensions.Wcf.SelfHost.NinjectWcfSelfHost.Start()
   at Ninject.Web.Common.SelfHost.NinjectSelfHostBootstrapper.Start()
   at TestApp.Program.StartNinjectSelfHostFromPlugin(IEnumerable`1 psoWebService
s) in c:\Users\william.davis\Documents\Visual Studio 2013\Projects\Service\TestA
pp\Program.cs:line 80

Answer 1

经过大量重构后，我可以正常工作，但我不知道它是否正常 'correct.' 为了让它正常工作，我基本上必须在我的网络服务中创建一个新的 IKernel class并且还让它继承自 NinjectModule 并在其中配置绑定。为什么我需要多个内核才能实现这一点？我应该补充一点，如果我不需要 Ninject 这可以通过使用标准 ServiceHost

uri 的注册已存在

A registration already exists for uri

c#

wcf

ninject

ninject-extensions