AspNet Core MVC 视图页面未加载属性

Dot NET CORE我试图在 MVC CORE web API soultion 中添加 MVC 视图 PAGE。我添加了控制器和视图，但是一旦我尝试访问它，它就会产生如下运行时错误。

如果我选择 Web 应用程序创建项目，一切正常.But 我有一个现有的 rest API 项目，这使我创建了两个项目。我认为我们可以扩展相同的项目来托管 Rest API 以及网页(如果需要)。不是吗？

Startup.cs

public void Configure(IApplicationBuilder app, ILoggerFactory loggerFactory)
        {
            loggerFactory.AddConsole(LogLevel.Debug);
            app.UseDeveloperExceptionPage();
            app.UseCors(options => options.AllowAnyOrigin().AllowAnyHeader().AllowAnyMethod());
            app.UseStaticFiles();
            app.UseOAuthValidation();
            app.UseOpenIddict();
            app.UseMvcWithDefaultRoute();
            app.UseStaticFiles();

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

 public void ConfigureServices(IServiceCollection services)
        {
            services.AddCors();
            services.AddMvc();
            services.AddAutoMapper();
            services.AddDbContext<ApplicationDbContext>(options =>

            services.AddIdentity<ApplicationUser, IdentityRole<Guid>>()
                .AddEntityFrameworkStores<ApplicationDbContext, Guid>()
                .AddDefaultTokenProviders();
            services.AddOpenIddict<ApplicationUser, IdentityRole<Guid>, ApplicationDbContext, Guid>()

                .AllowAuthorizationCodeFlow()
                .AllowPasswordFlow()
                .AllowRefreshTokenFlow()
                .DisableHttpsRequirement()

                .AddEphemeralSigningKey();
            services.AddTransient<IEmailSender, AuthMessageSender>();
        }

Project.json

{
  "buildOptions": {
    "emitEntryPoint": true,
    "debugType": "portable"
  },
  "dependencies": {

    "Microsoft.AspNetCore.Mvc": "1.0.0",
    "Microsoft.AspNetCore.Mvc.Formatters.Json": "1.0.0",
    "Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
    "Microsoft.AspNetCore.Server.Kestrel": "1.0.0",
    "Microsoft.Extensions.Logging.Console": "1.0.0",
    "OpenIddict": "1.0.0-alpha2-0448",
    "Microsoft.NETCore.App": {
      "type": "platform",
      "version": "1.0.0"
    },
    "Microsoft.AspNetCore.Razor.Tools": {
      "version": "1.0.0-preview2-final",
      "type": "build"
    },
    "Microsoft.AspNetCore.Mvc.TagHelpers": "1.0.0",
    "AspNet.Security.OAuth.Validation": "1.0.0-alpha2-final",
    "Microsoft.AspNetCore.StaticFiles": "1.0.0",
    "Microsoft.AspNetCore.Hosting.Abstractions": "1.0.0",
    "Microsoft.Extensions.Configuration.FileExtensions": "1.0.0",
    "Microsoft.Extensions.Configuration.Json": "1.0.0",
    "Microsoft.AspNetCore.Identity.EntityFrameworkCore": "1.0.0",
    "Microsoft.EntityFrameworkCore": "1.0.1",
    "Microsoft.EntityFrameworkCore.Design": "1.0.0-preview2-final",
    "Microsoft.EntityFrameworkCore.SqlServer": "1.0.1",
    "Microsoft.AspNetCore.Cors": "1.0.0",
    "Microsoft.AspNetCore.Authentication.OpenIdConnect": "1.0.0",
    "Microsoft.AspNetCore.Authentication.JwtBearer": "1.0.0",
    "AutoMapper": "5.1.1",
    "AutoMapper.Extensions.Microsoft.DependencyInjection": "1.1.2",
    "Microsoft.DotNet.ProjectModel": "1.0.0-rc3-003121",
    "Microsoft.AspNetCore.Diagnostics": "1.0.0-rc2-final",
    "datalayer": "1.0.0.0",
    "Common": "1.0.0-*"
  },
  "frameworks": {
    "netcoreapp1.0": { }
  },
  "tools": {
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": {
      "version": "1.0.0-preview2-final"
    },
    "Microsoft.EntityFrameworkCore.Tools": {
      "version": "1.0.0-preview2-final"
    }
  },
  "scripts": {
    "prepublish": [ "bower install" ],
    "postpublish": "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%"
  },
  "publishOptions": {
    "include": [ "wwwroot" ],
    "includeFiles": [ "appsettings.json" ]
  }
}

****控制器

public class ActivationController : Controller
    {
        // GET: /<controller>/
        public IActionResult Index()
        {
            return View();
        }
    }

查看(Index.cshtml)

<h1>Hello world!</h1>