我如何使用ASP.NET Core 3.1身份从业务逻辑层进行身份验证和注册用户

Question

[我的问题可能不是建设性的，但仍在学习中，请提供帮助。

我正在设计一个具有dotnet核心3.1 mvc的3层体系结构，Visual Studio2019。我只想使用一个从数据访问层到数据库的连接，并使用业务逻辑层中的身份对用户进行身份验证。那是：

连接字符串在数据访问层中，我想通过扩展的IServiceCollectionExtension配置服务。

public static class IServiceCollectionExtension
{
    public static IServiceCollection AddDALDependenciesLibraries(this IServiceCollection services)
    {
        services.AddScoped<IUnitOfWork, UnitOfWork>();
        services.AddScoped<ICoursesBL, CoursesBL>();
        services.AddScoped<IStudentsBL, StudentBL>();
        services.AddIdentity<IdentityUser, IdentityRole>).AddEntityFrameworkStores<GooddbContext>();

        return services;
    }
}

然后在startup.cs中启动它，如

    // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddDbContextPool<GooddbContext>(
            options => options.UseSqlServer(Configuration.GetConnectionString("EmployeeDBConnection")));
        services.AddDALDependenciesLibraries();
        services.AddControllersWithViews();
    }

但是如果我启动该应用程序，它将在下面引发此错误：

System.AggregateExceptionHResult = 0x80131500消息=无法构建某些服务（验证服务描述符'ServiceType：TestCoreApp.BLL.BusinessLogic.Interfaces.ICoursesBL时出错：范围内的实现类型：TestCoreApp.BLL.BusinessLogic.CoursesBL'：无法为类型'解析服务尝试激活'TestCoreApp.BLL.BusinessLogic.CoursesBL'时为AutoMapper.IMapper。）（验证服务描述符'ServiceType：TestCoreApp.BLL.BusinessLogic.Interfaces.IStudentsBL时发生错误：范围内的实现类型：TestCoreApp.BLL.BusinessLogic.StudentBL '：尝试激活“ TestCoreApp.BLL.BusinessLogic.StudentBL”时，无法解析类型为“ AutoMapper.IMapper”的服务。）源= Microsoft.Extensions.DependencyInjection堆栈跟踪：在Microsoft.Extensions.DependencyInjection.ServiceProvider..ctor（IEnumerable

1 serviceDescriptors, ServiceProviderOptions options)
     at Microsoft.Extensions.DependencyInjection.ServiceCollectionContainerBuilderExtensions.BuildServiceProvider(IServiceCollection services, ServiceProviderOptions options)
     at Microsoft.Extensions.DependencyInjection.DefaultServiceProviderFactory.CreateServiceProvider(IServiceCollection containerBuilder)
     at Microsoft.Extensions.Hosting.Internal.ServiceFactoryAdapter

1.CreateServiceProvider（Object containerBuilder）在Microsoft.Extensions.Hosting.HostBuilder.CreateServiceProvider（）在Microsoft.Extensions.Hosting.HostBuilder.Build（）在C：\ Users \ verky \ source \ repos \ TestCoreApp \ TestCoreApp.UI \ Program.cs：line 16中的TestCoreApp.UI.Program.Main（String [] args）中]

此异常最初是在此调用堆栈上抛出的：

Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteFactory.CreateArgumentCallSites（System.Type，System.Type，Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteChain，System.Reflection.ParameterInfo []，布尔）Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteFactory.CreateConstructorCallSite（Microsoft.Extensions.DependencyInjection.ServiceLookup.ResultCache，System.Type，System.Type，Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteChain）Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteFactory.TryCreateExact（Microsoft.Extensions.DependencyInjection.ServiceDescriptor，System.Type，Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteChain，int）Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteFactory.GetCallSite（Microsoft.Extensions.DependencyInjection.ServiceDescriptor，Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteChain）Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngine.ValidateService（Microsoft.Extensions.DependencyInjection.ServiceDescriptor）

内部例外1：

InvalidOperationException：验证服务描述符'ServiceType：TestCoreApp.BLL.BusinessLogic.Interfaces.ICoursesBL'时发生错误：作用域实现类型：TestCoreApp.BLL.BusinessLogic.CoursesBL'：尝试解析类型'AutoMapper.IMapper'的服务时，无法解析激活“ TestCoreApp.BLL.BusinessLogic.CoursesBL”。

内部例外2：

InvalidOperationException：在尝试激活'TestCoreApp.BLL.BusinessLogic.CoursesBL'时无法解析类型为'AutoMapper.IMapper'的服务。

[我的问题可能不是建设性的，但仍在学习中，请提供帮助。我正在设计一个具有dotnet核心3.1 mvc，Visual Studio 2019的3层体系结构。我只想使用一个连接...

Answer 1

//此方法由运行时调用。使用此方法将服务添加到容器。