Ошибка при выполнении add -igration net core 3 - PullRequest
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Ошибка при выполнении add -igration net core 3

0 голосов
/ 05 июля 2019

Я пытаюсь настроить новую базу данных / миграцию с Entity Framework Core с сетевым ядром 3, но вот следующая ошибка. с надстройкой начальная миграция Можете ли вы помочь мне, пожалуйста?

Program.cs 

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

        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.UseStartup<Startup>();
                });
    }

appsettings.json 

{
  "connectionString": {
    "MyConnection": "data source=Localhost;Database=MyDataBase;User Id=MyUser;Password=MyPass;MultipleActiveResultSets=True"
  },
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Warning",
      "Microsoft.Hosting.Lifetime": "Information"
    }
  },

  "AllowedHosts": "*"
}

Startup.cs 

public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }
        private void ConfigureJson(MvcNewtonsoftJsonOptions obj)
        {
            obj.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
            obj.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore;

        }
        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            string contactConnection = Configuration.GetConnectionString("MyConnection");
            services.AddDbContext<ApplicationContactDbContext>(options =>
                    options.UseSqlServer(contactConnection)
            );
            services.AddMvc()
                   .SetCompatibilityVersion(CompatibilityVersion.Version_3_0)
                   .AddNewtonsoftJson(ConfigureJson);
           services.AddCors(options =>
            {
                options.AddPolicy("EnableCORS", builder => { builder.WithOrigins("*").AllowAnyHeader().AllowAnyMethod(); });
            });

            services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
            services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
             .AddJwtBearer(options =>
             {
                 options.TokenValidationParameters = new TokenValidationParameters
                 {
                     ValidateIssuer = true,
                     ValidateAudience = true,
                     ValidateLifetime = true,
                     ValidateIssuerSigningKey = true,
                     ValidIssuer = "http://localhost:5000",
                     ValidAudience = "http://localhost:5000",
                     IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes("superSecretKeyYoSoyExitoso@345"))
                 };
             });
            services.AddControllers();

        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }

            app.UseRouting();

            app.UseAuthorization();

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

Это ошибка:

System.ArgumentNullException: значение не может быть нулевым. Имя параметра: connectionString в Microsoft.EntityFrameworkCore.Utilities.Check.NotEmpty (строковое значение, строковое имя_параметра) в Microsoft.EntityFrameworkCore.SqlServerDbContextOptionsExtensions.UseSqlServer (DbContextOptionsBuilder optionsBuilder, String connectionString, Action 1 sqlServerOptionsAction) at Elapoint.ContactExtension.MicroService.Startup.<>c__DisplayClass5_0.<ConfigureServices>b__0(DbContextOptionsBuilder options) in E:\PersonalesX\Proyectos\PV5\NetCore\Extensions\Contacts\Api\Startup.cs:line 37 at Microsoft.Extensions.DependencyInjection.EntityFrameworkServiceCollectionExtensions.<>c__DisplayClass1_0 2.b__0 (IServiceProvider p, DbContextOptionsBuilder b) в Microsoft.Extensions.DependencyInjection.EntityFrameworkServiceCollectionExtensions.DbContextOptionsFactory [TContext] (IServiceProvider applicationServiceProvider, действие 2 optionsAction) at Microsoft.Extensions.DependencyInjection.EntityFrameworkServiceCollectionExtensions.<>c__DisplayClass10_0 1.b__0 (IServiceProvider p) в Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitFactory (FactoryCallSite factoryCallSite, контекст RuntimeResolverContext) в Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor 2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument) at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitCache(ServiceCallSite callSite, RuntimeResolverContext context, ServiceProviderEngineScope serviceProviderEngine, RuntimeResolverLock lockType) at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitScopeCache(ServiceCallSite singletonCallSite, RuntimeResolverContext context) at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor 2.VisitCallSite (ServiceCallSite callSite, аргумент TArgument) в Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve (ServiceCallSite callSite, область действия ServiceProviderEngineScope) в Microsoft.Extensions.DependencyInjection.ServiceLookup.DynamicServiceProviderEngine. <> c__DisplayClass1_0.b__0 (область действия ServiceProviderEngineScope) в Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngine.GetService (Тип serviceType, ServiceProviderEngineScope serviceProviderEngineScope) в Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngineScope.GetService (Тип serviceType) в Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService (поставщик IServiceProvider, Тип serviceType) в Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService [T] (поставщик IServiceProvider) в Microsoft.Extensions.DependencyInjection.EntityFrameworkServiceCollectionExtensions. <> c__10 1.<AddCoreServices>b__10_1(IServiceProvider p) at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitFactory(FactoryCallSite factoryCallSite, RuntimeResolverContext context) at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor 2.VisitCallSiteMain (ServiceCallSite callSite, аргумент TArgument) в Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitCache (CallSite ServiceCallSite, контекст RuntimeResolverContext, ServiceProviderEngineScope serviceProviderEngine, RuntimeResolverLock lockType) в Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitScopeCache (ServiceCallSite singletonCallSite, контекст RuntimeResolverContext) в Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor 2.VisitCallSite(ServiceCallSite callSite, TArgument argument) at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitIEnumerable(IEnumerableCallSite enumerableCallSite, RuntimeResolverContext context) at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor 2.VisitCallSiteMain (ServiceCallSite callSite, аргумент TArgument) в Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitCache (CallSite ServiceCallSite, контекст RuntimeResolverContext, ServiceProviderEngineScope serviceProviderEngine, RuntimeResolverLock lockType) в Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitScopeCache (ServiceCallSite singletonCallSite, контекст RuntimeResolverContext) в Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor 2.VisitCallSite(ServiceCallSite callSite, TArgument argument) at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve(ServiceCallSite callSite, ServiceProviderEngineScope scope) at Microsoft.Extensions.DependencyInjection.ServiceLookup.DynamicServiceProviderEngine.<>c__DisplayClass1_0.<RealizeService>b__0(ServiceProviderEngineScope scope) at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngine.GetService(Type serviceType, ServiceProviderEngineScope serviceProviderEngineScope) at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngineScope.GetService(Type serviceType) at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType) at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider) at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetServices[T](IServiceProvider provider) at Microsoft.EntityFrameworkCore.Design.Internal.DbContextOperations.FindContextTypes() at Microsoft.EntityFrameworkCore.Design.Internal.DbContextOperations.FindContextType(String name) at Microsoft.EntityFrameworkCore.Design.Internal.DbContextOperations.CreateContext(String contextType) at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.AddMigration(String name, String outputDir, String contextType) at Microsoft.EntityFrameworkCore.Design.OperationExecutor.AddMigrationImpl(String name, String outputDir, String contextType) at Microsoft.EntityFrameworkCore.Design.OperationExecutor.AddMigration.<>c__DisplayClass0_1.<.ctor>b__0() at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.<>c__DisplayClass3_0 1.b__0 () в Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute (Действие действия) Значение не может быть нулевым. Имя параметра: connectionString

1 Ответ

0 голосов
/ 05 июля 2019

В вашем файле настроек приложения попробуйте переименовать "connectionString" в "ConnectionStrings"

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