使用NInject提供的示例,我通过它创建一个“HttpConfiguration”对象并在startup.cs中调用NInject扩展方法,我收到一个错误：

Error activating HttpConfiguration
More than one matching bindings are available.
Matching bindings:
1) binding from HttpConfiguration to method
2) self-binding of HttpConfiguration
3) binding from HttpConfiguration to constant value
Activation path:
1) Request for HttpConfiguration

Suggestions:
1) Ensure that you have defined a binding for HttpConfiguration only once.

我的代码如下Startup.cs：

public void Configuration(IAppBuilder app)
    {
        Logger.Info("Entering Startup");
 
        config = new HttpConfiguration();
 
        ConfigureOAuth(app);
 
        // Web API configuration and services
        config.SuppressDefaultHostAuthentication();
        config.Filters.Add(new HostAuthenticationFilter("Bearer"));
 
        // Web API routes
        config.MapHttpAttributeRoutes();
 
        config.Routes.MapHttpRoute(
            name: "DefaultApi",routeTemplate: "api/{controller}/{id}",defaults: new {id = RouteParameter.Optional}
            );
 
        var appXmlType =
            config.Formatters.XmlFormatter.SupportedMediaTypes.FirstOrDefault(
                t => t.MediaType == "application/xml");
        config.Formatters.XmlFormatter.SupportedMediaTypes.Remove(appXmlType);
 
        app.UseNinjectMiddleware(CreateKernel);
 
        app.UseNinjectWebApi(config);
 
        app.UseCors(Microsoft.Owin.Cors.CorsOptions.AllowAll);
 
        Logger.Info("Exiting Startup");
 
    }
 
 
    public static StandardKernel CreateKernel()
    {
        kernel = new StandardKernel();
        kernel.Load(Assembly.GetExecutingAssembly());
 
        kernel.Bind<HttpConfiguration>().ToSelf().Named("TestHttpConfiguration");
 
        return kernel;
    }

奇怪的是当我在浏览器中刷新页面时,错误发生了,这让我相信这只会在应用程序启动时发生.

所以我对此感到困惑.有人遇到过同样的问题吗？

谢谢

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