没有配置任何身份验证处理程序来处理该方案:自动

Question

我更新了ASP.NET 5框架beta-8包，并在以前工作的应用程序上使用了RC软件包。在我让它运行之后，启动过程中发生了下一个错误：

Microsoft.AspNet.Http.Authentication.Internal.DefaultAuthenticationManager.d__12.MoveNext()：没有配置任何身份验证处理程序来处理方案:自动InvalidOperationException

var defaultPolicy =
    new AuthorizationPolicyBuilder()
    .RequireAuthenticatedUser()
    .Build();

services.AddMvc(setup =>
{
    setup.Filters.Add(new AuthorizeFilter(defaultPolicy)); // Error occurs here
});

如果有人有类似的问题，我会感谢你的想法或解决方案，什么可能是错的。对这一例外情况的解释也值得赞赏。

Startup.cs

using Autofac;
using Autofac.Extensions.DependencyInjection;
using Microsoft.AspNet.Authorization;
using Microsoft.AspNet.Builder;
using Microsoft.AspNet.Hosting;
using Microsoft.AspNet.Http;
using Microsoft.AspNet.Mvc.Filters;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.PlatformAbstractions;
using SuperUserMVC.Configuration;
using SuperUserMVC.Extensions;
using SuperUserMVC.GlobalModules;
using System;

namespace SuperUserMVC
{
    public class Startup
    {
        public IConfigurationRoot Configuration { get; set; }

        // Entry point for the application.
        public static void Main(string[] args) => WebApplication.Run<Startup>(args);

        public Startup(IHostingEnvironment env, IApplicationEnvironment appEnv)
        {
            var builder = new ConfigurationBuilder()
                .SetBasePath(appEnv.ApplicationBasePath)
                .AddJsonFile("appsettings.json");

            Configuration = builder.Build();
        }

        public IServiceProvider ConfigureServices(IServiceCollection services)
        {
            services.Configure<AppSettingsBase>(Configuration.GetSection("AppSettingsBase"));
            services.Configure<ConnectionString>(Configuration.GetSection("ConnectionString"));

            services.AddSqlServerCache(cache =>
            {
                cache.ConnectionString = Configuration.Get<string>("ASPState:ConnectionString");
                cache.SchemaName = Configuration.Get<string>("ASPState:Schema");
                cache.TableName = Configuration.Get<string>("ASPState:Table");
            });

            services.AddSession(session =>
            {
                session.IdleTimeout = TimeSpan.FromMinutes(120);
            });

            // Only allow authenticated users.
            var defaultPolicy = new AuthorizationPolicyBuilder()
                .RequireAuthenticatedUser()
                .Build();

            // Add MVC services to the services container.
            services.AddMvc(setup =>
            {
                setup.Filters.Add(new AuthorizeFilter(defaultPolicy));
            });

            var builder = new ContainerBuilder();
            builder.RegisterModule(new AutofacModule());
            builder.Populate(services);

            var container = builder.Build();

            return container.Resolve<IServiceProvider>();
        }

        public void Configure(IApplicationBuilder app, IHttpContextAccessor httpContextAccessor)
        {
            // Catch unhandled exception in pipeline.
            bool isProductionEnvironment = Configuration.Get<bool>("environmentVariables:isProductionEnvironment");
            app.UseCustomUnhandledException(isProductionEnvironment, Configuration.Get<string>("defaultErrorPagePath"));

            // Log requests.
            app.UseVisitLogger(isProductionEnvironment);

            // Session must be used before MVC routes.
            app.UseSession();

            // Configure the HTTP request pipeline.
            app.UseCookieAuthentication(options =>
            {
                options.AuthenticationScheme = "Cookies";
                options.LoginPath = new PathString("/Account/Login/");
                options.AccessDeniedPath = new PathString("/Account/Forbidden/");
                options.CookieName = "MyCookie";
                options.AutomaticAuthenticate = true;
                options.SessionStore = new MemoryCacheSessionStore();
            });

            AutoMapperInitializer.Init();
            app.UseStaticFiles();

            // Route configuration.
            app.UseMvc(routes =>
            {
                routes.MapRoute(
                    name: "AreaDefault",
                    template: "{area:exists=Demo}/{controller=Home}/{action=Index}/{id?}"
                );

                routes.MapRoute(
                    name: "Default",
                    template: "{controller=Home}/{action=Index}/{id?}"
                );
            });
        }
    }
}

Answer 1

尝试在cookies选项中设置options.AutomaticChallenge = true;，它应该可以工作。

options.AutomaticAuthentication分为options.AutomaticAuthenticate和options.AutomaticChallenge。如果将最后一个问题留给false处理，则会引发异常，因为没有身份验证中间件处理授权筛选器应用的挑战。

Answer 2

希望这将对其他人有所帮助，因为我只是花了很多时间来处理这个错误，尽管我已经设置了AutomaticChallenge = true。

如果将app.UseIdentity();放在app.UseMvc(routes => ...)之后，则会得到相同的错误。现在我知道答案了，这是显而易见的。这是因为所有这些中间件都是按照您添加的顺序进行的。

这将导致“未配置身份验证处理程序”错误：

    public void Configure(...)
    {
        app.UseMvc(routes => { routes.MapRoute(...) }; );

        app.UseIdentity();
    }

这不会导致错误：

    public void Configure(...)
    {
        app.UseIdentity();

        app.UseMvc(routes => { routes.MapRoute(...); });
    }

Answer 3

将其置于配置方法中。

        app.UseIdentity();