Question

我遇到了这个问题：没有为“Microsoft.AspNetCore.Mvc.ViewFeatures.ITempDataDictionaryFactory”类型的服务注册。在asp.net核心1.0中，似乎在行动时尝试为了呈现视图我有这个例外。

我搜索了很多，但我找不到解决方案，如果有人可以帮我弄清楚发生了什么，我该如何解决，我会很感激。

我的代码如下：

我的 project.json 文件

{
  "dependencies": {
    "Microsoft.NETCore.App": {
      "version": "1.0.0",
      "type": "platform"

    },
    "Microsoft.AspNetCore.Diagnostics": "1.0.0",
    "Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
    "Microsoft.AspNetCore.Server.Kestrel": "1.0.0",
    "Microsoft.Extensions.Logging.Console": "1.0.0",
    "Microsoft.AspNetCore.Mvc": "1.0.0",
    "Microsoft.AspNetCore.StaticFiles": "1.0.0-rc2-final",
    "EntityFramework.MicrosoftSqlServer": "7.0.0-rc1-final",
    "EntityFramework.Commands": "7.0.0-rc1-final"
  },

  "tools": {
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final"
  },

  "frameworks": {
    "netcoreapp1.0": {
      "imports": [
        "dnxcore50",
        "portable-net45+win8"
      ]
    }
  },

  "buildOptions": {
    "emitEntryPoint": true,
    "preserveCompilationContext": true
  },

  "runtimeOptions": {
    "configProperties": {
      "System.GC.Server": true
    }
  },

  "publishOptions": {
    "include": [
      "wwwroot",
      "web.config"
    ]
  },

  "scripts": {
    "postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
  }
}

我的 Startup.cs 文件

using System;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Routing;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using OdeToFood.Services;

namespace OdeToFood
{
    public class Startup
    {
        public IConfiguration configuration { get; set; }
        // This method gets called by the runtime. Use this method to add services to the container.
        // For more information on how to configure your application, visit http://go.microsoft.com/fwlink/?LinkID=398940
        public void ConfigureServices(IServiceCollection services)
        {

            services.AddScoped<IRestaurantData, InMemoryRestaurantData>();
            services.AddMvcCore();
            services.AddSingleton(provider => configuration);
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
        {

            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            //app.UseRuntimeInfoPage();

            app.UseFileServer();

            app.UseMvc(ConfigureRoutes);

            app.Run(async (context) =>
            {
                await context.Response.WriteAsync("Hello World!");
            });
        }

        private void ConfigureRoutes(IRouteBuilder routeBuilder)
        {
            routeBuilder.MapRoute("Default", "{controller=Home}/{action=Index}/{id?}");
        }
    }
}

Answer 1

解决方案：在AddMvc()中使用AddMvcCore()代替Startup.cs，它将有效。

有关原因的详细信息，请参阅此问题：

对于大多数用户来说，没有任何变化，您应该继续使用   在启动代码中添加了AddMvc（）和UseMvc（...）。

对于真正勇敢的人来说，现在有了配置体验   可以从最小的MVC管道开始，并添加功能来获得   定制框架。

https://github.com/aspnet/Mvc/issues/2872

您可能还需要添加引用到Microsoft.AspNetCore.Mvc.ViewFeature

中的project.json

https://www.nuget.org/packages/Microsoft.AspNetCore.Mvc.ViewFeatures/

Answer 2

如果您使用2.0，请在services.AddMvcCore().AddRazorViewEngine();

中使用ConfigureServices

如果您使用.AddAuthorization()属性，请务必添加Authorize，否则无效。

Answer 3

在.NET Core 3.1中，我必须添加以下内容：

services.AddRazorPages();

在ConfigureServices()

中

Configure()中Startup.cs中的以下内容

app.UseEndpoints(endpoints =>
{
     endpoints.MapRazorPages();
}

Answer 4

我知道这是一篇旧文章，但这是将MVC项目迁移到.NET Core 3.0后遇到的最高的Google搜索结果。使我的Startup.cs像这样为我修复：

public class Startup
{
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddControllersWithViews();
    }

    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
        }

        app.UseRouting();

        app.UseEndpoints(endpoints =>
        {
            endpoints.MapControllers();
        });
    }
}

Answer 5

解决方案：在Startup.cs中使用services.AddMvcCore(options => options.EnableEndpointRouting = false).AddRazorViewEngine();，它将起作用。

此代码已针对asp.net core 3.1（MVC）进行了测试

Answer 6

对于.NET Core 2.0，在ConfigureServices中，使用：

services.AddNodeServices();

Answer 7

现在我有同样的问题，我像你一样使用AddMcvCore。我发现错误是自我描述的，这是作为一个假设，我将AddControllersWithViews服务添加到ConfigureServices函数中，并为我解决了问题。（我仍然也使用AddMvcCore。）

router.get('/services', (req, res) => {

    let arr = [];

    const call1 = service1()
        .then(res => arr.push({ res, type: 'service1'} ))
        .catch(error => res.status(error.status).json(error));

    const call2 = service2()
        .then(res => arr.push({ res, type: 'service2'} ))
        .catch(error => res.status(error.status).json(error));
})

Promise.all([service1, service2]).then(values => { 
  // not sure what to do here
});

Answer 8

只需添加以下代码即可：

   public void ConfigureServices(IServiceCollection services)
        {
            services.AddMvcCore()
                    .AddViews();

        }

Answer 9

对于那些在.NetCore 1.X期间遇到此问题的人 - ＆gt; 2.0升级，同时更新Program.cs和Startup.cs

public class Program
{
    public static void Main(string[] args)
    {
        BuildWebHost(args).Run();
    }

    public static IWebHost BuildWebHost(string[] args) =>
        WebHost.CreateDefaultBuilder(args)
            .UseStartup<Startup>()
            .Build();
}

public class Startup
{
// The appsettings.json settings that get passed in as Configuration depends on 
// project properties->Debug-->Enviroment Variables-->ASPNETCORE_ENVIRONMENT
    public Startup(IConfiguration configuration)
    {
        Configuration = configuration;
    }

    public IConfiguration Configuration { get; }

    public void ConfigureServices(IServiceCollection services)
    {
        services.AddDbContext<ApplicationDbContext>(options =>
            options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

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

        services.AddTransient<IEmailSender, EmailSender>();

        services.AddMvc();
    }

    public void Configure(IApplicationBuilder app, IHostingEnvironment env)
    {
    // no change to this method leave yours how it is
    }
}

Answer 10

这个适合我的情况：

services.AddMvcCore()
.AddApiExplorer();

Answer 11

您在startup.cs中使用它

services.AddSingleton<PartialViewResultExecutor>();

Answer 12

要能够返回JSON数据，JsonFormatterServices需要在依赖项注入容器中注册。 AddMvc()方法执行此操作，但AddMvcCore()方法则不执行此操作。您可以通过查看ASP.NET Core MVC Github页面上的源代码来确认这一点。

没有为“Microsoft.AspNetCore.Mvc.ViewFeatures.ITempDataDictionaryFactory”类型提供服务

12 个答案: