Question

我正在研究一个通用WCF主机，它扫描插件文件夹并加载实现类型的所有程序集＆＃34; IWebService＆＃34;

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

当只加载一个插件时，这很有用。

但是当我尝试启动第二个时，它会抛出一个异常，说明＆＃34; URI已经存在注册＆＃34;

我在App.config中定义了两个完全不同的服务，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>

以下是我如何加载它们并启动主机

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();
            }
        }

任何建议都将不胜感激。

更新例外

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

经过大量的重构，我有这个工作，但我不知道它是否正确。＆＃39;为了使它工作，我必须基本上在我的webservice类中创建一个新的IKernel，并让它继承NinjectModule并在那里配置绑定。为什么我需要多个内核才能实现这一目标？我应该补充一点，如果我不需要Ninject，这可以使用标准的ServiceHost

uri已经存在注册

1 个答案: