运行 EF 迁移时出错

Question

我刚刚为 .net core 2.0 预览版 1 创建了一个新的 Web 项目，其中包括使用 visual studio 2017 预览版的个人用户帐户身份验证。

然后，当我尝试从程序包管理器控制台运行更新数据库时，我收到以下错误消息：

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.

当我从cmd 运行它时也会出现同样的错误。

如何修复此问题以运行迁移成功？

Answer 1

出现这个问题时我使用的是.NET Core 2.0 Preview 1。即使按照以下 link https://docs.microsoft.com/en-gb/aspnet/core/security/https 中的一些似乎是解决此问题的方法的建议，我仍然遇到相同的错误。

最后，我决定升级到 .NET Core 2.0 Preview 2，现在它的效果非常好:)

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

运行 EF 迁移时出错

Error when running EF migrations

c#

entity-framework

entity-framework-core

asp.net-core

asp.net-core-2.0