運行EF遷移時出錯

Question

我剛剛爲.net core 2.0 preview 1創建了一個新的web項目，其中包括使用visual studio 2017預覽版的個人用戶帳戶驗證。

然後，當我試圖從包管理器控制檯運行更新的數據庫，我得到了以下錯誤消息：

System.InvalidOperationException: Unable to configure HTTPS endpoint. For information on configuring HTTPS see https://go.microsoft.com/fwlink/?linkid=848054. ---> System.Collections.Generic.KeyNotFoundException: No certificate named 'HTTPS' found in configuration for the current environment (Production). 
    at Microsoft.AspNetCore.CertificateLoader.LoadSingle(String certificateName) 
    at Microsoft.AspNetCore.CertificateLoader.Load(IConfigurationSection certificateConfiguration) 
    at Microsoft.AspNetCore.KestrelServerOptionsSetup.<>c__DisplayClass6_0.<BindEndPoint>b__0(ListenOptions listenOptions) 
    --- End of inner exception stack trace --- 
    at Microsoft.AspNetCore.KestrelServerOptionsSetup.<>c__DisplayClass6_0.<BindEndPoint>b__0(ListenOptions listenOptions) 
    at Microsoft.AspNetCore.Server.Kestrel.Core.KestrelServerOptions.Listen(IPEndPoint endPoint, Action`1 configure) 
    at Microsoft.AspNetCore.Server.Kestrel.Core.KestrelServerOptions.Listen(IPAddress address, Int32 port, Action`1 configure) 
    at Microsoft.AspNetCore.KestrelServerOptionsSetup.BindEndPoint(KestrelServerOptions options, IConfigurationSection endPoint, CertificateLoader certificateLoader) 
    at Microsoft.AspNetCore.KestrelServerOptionsSetup.BindConfiguration(KestrelServerOptions options) 
    at Microsoft.AspNetCore.KestrelServerOptionsSetup.Configure(KestrelServerOptions options) 
    at Microsoft.Extensions.Options.LegacyOptionsCache`1.CreateOptions() 
    at System.Threading.LazyInitializer.EnsureInitializedCore[T](T& target, Boolean& initialized, Object& syncLock, Func`1 valueFactory) 
    at Microsoft.Extensions.Options.LegacyOptionsCache`1.get_Value() 
    at Microsoft.Extensions.Options.OptionsManager`1.get_Value() 
    at Microsoft.AspNetCore.Server.Kestrel.Core.KestrelServer.CreateServiceContext(IOptions`1 options, ILoggerFactory loggerFactory) 
    at Microsoft.AspNetCore.Server.Kestrel.Core.KestrelServer..ctor(IOptions`1 options, ITransportFactory transportFactory, ILoggerFactory loggerFactory) 
--- End of stack trace from previous location where exception was thrown --- 
    at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() 
    at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitConstructor(ConstructorCallSite constructorCallSite, ServiceProvider provider) 
    at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(IServiceCallSite callSite, TArgument argument) 
    at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitScoped(ScopedCallSite scopedCallSite, ServiceProvider provider) 
    at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitSingleton(SingletonCallSite singletonCallSite, ServiceProvider provider) 
    at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(IServiceCallSite callSite, TArgument argument) 
    at Microsoft.Extensions.DependencyInjection.ServiceProvider.<>c__DisplayClass17_0.<RealizeService>b__0(ServiceProvider provider) 
    at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetService(Type serviceType) 
    at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType) 
    at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider) 
    at Microsoft.AspNetCore.Hosting.Internal.WebHost.EnsureServer() 
    at Microsoft.AspNetCore.Hosting.Internal.WebHost.BuildApplication() 
    at Microsoft.AspNetCore.Hosting.WebHostBuilder.Build() 
    at Test.Program.BuildWebHost(String[] args) in  C:\Users\Test\Documents\Test\src\Test\Program.cs:line 21 
    at Test.Identity.Data.IdentityServiceDbContextFactory.Create(String[] args) in C:\Users\Test\Documents\Test\src\Test\Areas\IdentityService\Data\IdentityServiceDbContextFactory.cs:line 13 
    at Microsoft.EntityFrameworkCore.Design.Internal.DbContextOperations.<>c__DisplayClass10_0.<FindContextTypes>b__3() 
    at Microsoft.EntityFrameworkCore.Design.Internal.DbContextOperations.CreateContext(Func`1 factory) 
    at Microsoft.EntityFrameworkCore.Design.Internal.DbContextOperations.CreateContext(String contextType) 
    at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.UpdateDatabase(String targetMigration, String contextType) 
    at Microsoft.EntityFrameworkCore.Design.OperationExecutor.UpdateDatabase.<>c__DisplayClass0_1.<.ctor>b__0() 
    at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action) 
Unable to configure HTTPS endpoint. For information on configuring HTTPS see https://go.microsoft.com/fwlink/?linkid=848054. 

，當我從CMD運行同樣的錯誤也可能發生。

如何解決此問題以成功運行遷移？

Answer 1

發生此問題時，我使用了.NET Core 2.0 Preview 1。即使按照以下鏈接https://docs.microsoft.com/en-gb/aspnet/core/security/https似乎是解決這個問題的一些建議後，我仍然得到了同樣的錯誤。

最後我決定升級到.NET核2.0預覽2，現在，它就像一個魅力:)

https://blogs.msdn.microsoft.com/dotnet/2017/06/28/announcing-net-core-2-0-preview-2/