Ospitare un servizio WCF in un problema sito: System.ArgumentException: ServiceHost supporta solo i tipi di servizio di classe

Question

ho qualcosa di simile a questo:

MathServiceLibrary (WCF Servizio Biblioteca)

[ServiceContract] 
public interface IMathService 
{ 
     [OperationContract] 
     int Add(int x, int y); 
     [OperationContract] 
     int Multiply(int x, int y); 
} 

public class MathService : IMathService 
{ 
     public int Add(int x, int y) 
     { 
      return x + y; 
     } 

     public int Multiply(int x, int y) 
     { 
      return x * y; 
     } 
} 

<behaviors> 
    <serviceBehaviors> 
     <behavior name="defaultServiceBehavior"> 
     <serviceMetadata httpGetEnabled="true" /> 
     </behavior> 
    </serviceBehaviors> 
</behaviors> 
<services> 
    <service behaviorConfiguration="defaultServiceBehavior" 
      name="MathServiceLibrary.MathService"> 
     <endpoint 
      address="mex" 
      binding="mexHttpBinding" 
      contract="IMetadataExchange" /> 
     <endpoint 
      address="math" 
      binding="wsHttpBinding" 
      contract="MathServiceLibrary.IMathService" /> 
     <host> 
      <baseAddresses> 
      <add baseAddress="http://localhost:8080/" /> 
      </baseAddresses> 
     </host> 
    </service> 
</services> 

Se corro questo posso vedere il client di test WCF e tutto è ok.

Ora desidero ospitare questo servizio in IIS, quindi creo un sito Web e aggiungo un riferimento a MathServiceLibrary.

ho questo ms.svc

<%@ ServiceHost Language="C#" Debug="true" 
    Service="MathServiceLibrary.IMathService" %> 

e questo web.config

<system.serviceModel> 
     <services> 
      <service behaviorConfiguration="defaultServiceBehavior" name="MathServiceLibrary.MathService"> 
       <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/> 
       <endpoint address="" binding="wsHttpBinding" contract="MathServiceLibrary.IMathService"> 
        <identity> 
         <dns value="localhost"/> 
        </identity> 
       </endpoint> 
      </service> 
     </services> 
     <behaviors> 
      <serviceBehaviors> 
       <behavior name="defaultServiceBehavior"> 
        <serviceMetadata httpGetEnabled="true"/> 
        <serviceDebug includeExceptionDetailInFaults="false"/> 
       </behavior> 
      </serviceBehaviors> 
     </behaviors> 
     <serviceHostingEnvironment multipleSiteBindingsEnabled="true" /> 
    </system.serviceModel> 

Quando mi fate clic destro su ms.svc Solo lettura ottengo questo:

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentException: ServiceHost only supports class service types.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[ArgumentException: ServiceHost only supports class service types.]
System.ServiceModel.Description.ServiceDescription.GetService(Type serviceType) +12229075
System.ServiceModel.ServiceHost.CreateDescription(IDictionary`2& implementedContracts) +55
System.ServiceModel.ServiceHostBase.InitializeDescription(UriSchemeKeyedCollection baseAddresses) +154
System.ServiceModel.ServiceHost.InitializeDescription(Type serviceType, UriSchemeKeyedCollection baseAddresses) +49
System.ServiceModel.ServiceHost..ctor(Type serviceType, Uri[] baseAddresses) +151
System.ServiceModel.Activation.ServiceHostFactory.CreateServiceHost(Type serviceType, Uri[] baseAddresses) +30
System.ServiceModel.Activation.ServiceHostFactory.CreateServiceHost(String constructorString, Uri[] baseAddresses) +420
System.ServiceModel.HostingManager.CreateService(String normalizedVirtualPath) +1440
System.ServiceModel.HostingManager.ActivateService(String normalizedVirtualPath) +44
System.ServiceModel.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath) +615

[ServiceActivationException: The service '/MathWebSite/ms.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) +679246
System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result) +190
System.ServiceModel.Activation.HostedHttpRequestAsyncResult.ExecuteSynchronous(HttpApplication context, String routeServiceVirtualPath, Boolean flowContext, Boolean ensureWFService) +234
System.ServiceModel.Activation.HttpModule.ProcessRequest(Object sender, EventArgs e) +355
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +148
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75

non riesco a capire fuori quello che mi manca

Answer 1

Cambia la tua ms.svc come di seguito

<%@ ServiceHost Language="C#" Debug="true" Service="MathServiceLibrary.MathService" % > 

Devi dare il nome della classe invece del nome di interfaccia

Answer 2

Il file .svc è sbagliato. Fa riferimento all'interfaccia, non all'implementazione. Cambiare a questo: <%@ ServiceHost Language="C#" Debug="true" Service="MathServiceLibrary.MathService" %>

Answer 3

Il file svc deve avere il nome della classe piuttosto che il nome dell'interfaccia. Un file SVC di esempio ha i seguenti contenuti:

<%@ ServiceHost Language="C#" Debug="true" Service="SampleService.Service1" CodeBehind="Service1.svc.cs" %> 

Sperare che aiuti.

Answer 4

La voce nel file SVC è sbagliato:

invece di:

<%@ ServiceHost Language="C#" Debug="true" 
    Service="MathServiceLibrary.IMathService" %> 

è necessario disporre di:

<%@ ServiceHost Language="C#" Debug="true" 
    Service="MathServiceLibrary.MathService" %> 

È necessario definire il servizio di classe di implementazione in l'attributo Service= - NON il contratto di servizio!