将 ASP.NET 核心应用程序部署到 Azure 应用服务时出错

Question

下面是错误，    Application startup exception: System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.       at System.Collections.Generic.Dictionary`2.get_Item(TKey key)       at Microsoft.AspNetCore.Mvc.Internal.DefaultAssemblyPartDiscoveryProvider.CandidateResolver.ComputeClassification(String dependency)       at Microsoft.AspNetCore.Mvc.Internal.DefaultAssemblyPartDiscoveryProvider.CandidateResolver.ComputeClassification(String dependency)       at Microsoft.AspNetCore.Mvc.Internal.DefaultAssemblyPartDiscoveryProvider.CandidateResolver.ComputeClassification(String dependency)       at Microsoft.AspNetCore.Mvc.Internal.DefaultAssemblyPartDiscoveryProvider.CandidateResolver.<GetCandidates>d__4.MoveNext()       at System.Linq.Enumerable.<SelectManyIterator>d__17`2.MoveNext()       at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()       at Microsoft.Extensions.DependencyInjection.MvcCoreServiceCollectionExtensions.GetApplicationPartManager(IServiceCollection services)       at Microsoft.Extensions.DependencyInjection.MvcCoreServiceCollectionExtensions.AddMvcCore(IServiceCollection services)       at Microsoft.Extensions.DependencyInjection.MvcServiceCollectionExtensions.AddMvc(IServiceCollection services)我的 Program.cs 看起来像，    using System.IO;    using Microsoft.AspNetCore.Hosting;    namespace LeapfrogDataService    {        /// <summary>        ///         /// </summary>        public class Program        {            /// <summary>            ///             /// </summary>            /// <param name="args"></param>            public static void Main(string[] args)            {                var host = new WebHostBuilder()                    .UseKestrel()                    .UseContentRoot(Directory.GetCurrentDirectory())                    .UseIISIntegration()                    .UseStartup<Startup>()                    .Build();                host.Run();            }        }    }有人可以帮助解决这个错误吗？

Answer 1

解决方法是，

我Startup.cs在ConfigureServices方法中添加了以下几行。

// Configuring application part for MVC

var assembly = typeof(Startup).GetTypeInfo().Assembly;

var part = new AssemblyPart(assembly);

services.AddMvc().ConfigureApplicationPartManager(apm => apm.ApplicationParts.Add(part));

而且，还更新了与我的项目相关的每个 NuGet 包，不知道这是否真的有帮助，但我还是做到了。