在空的 ASP.NET Core Web 应用程序中设置 ASP.NET Identity Core

Question

我正在尝试启动一个新的 Web 应用程序项目，并且我想使用 asp.net 身份数据库（包含所有 AspNet 表（AspNetUsers、AspNetRoles 等）的数据库）。

我尝试遵循许多指南，其中包括：

• bitoftech.net/2015/01/21/asp-net-identity-2-with-asp-net-web-api-2-accounts-management/
• johnatten.com/2014/04/20/asp-net-mvc-and-identity-2-0-understanding-the-basics/
• tektutorialshub.com/asp-net-identity-tutorial-basics/%20%22ASP.Net%20Identity%20Tutoria
• benfoster.io/blog/aspnet-identity-stripped-bare-mvc-part-1

但是，当我尝试创建数据库时，我得到了这个error。

我也尝试过在 Visual Studio 中模仿模板项目（ASP.NET Core Web Application(.Net Core)），结果相同或this one

这就是我的项目的样子，它基本上是模板减去控制器、视图和模型。

Startup.cs

public class Startup
{
    public Startup(IHostingEnvironment env)
    {
        var builder = new ConfigurationBuilder()
            .SetBasePath(env.ContentRootPath);

        builder.AddEnvironmentVariables();

        Configuration = builder.Build();
    }
    public IConfigurationRoot Configuration { get; }

    // This method gets called by the runtime. Use this method to add services to the container.
    // For more information on how to configure your application, visit http://go.microsoft.com/fwlink/?LinkID=398940
    public void ConfigureServices(IServiceCollection services)
    {
        //var connectionString = @"Data Source=(localdb)\mssqllocaldb;Initial Catalog=Northwind;Integrated Security=True;Pooling=False";

        //services.AddEntityFramework()
        //    .AddSqlServer()
        //    .AddDbContext<NorthwindContext>(o =>
        //    o.UseSqlServer(connString));

        services.AddDbContext<ApplicationDbContext>(options =>
        options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

        services.AddIdentity<ApplicationUser, IdentityRole>()
            .AddEntityFrameworkStores<ApplicationDbContext>()
            .AddDefaultTokenProviders();

        services.AddMvc();
    }

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

        app.UseStaticFiles();

        app.UseIdentity();

        app.UseMvc(routes =>
        {
            routes.MapRoute(
                name: "default",
                template: "{controller=Home}/{action=Index}/{id?}");
        });
    }
}

ApplicationUser.cs

public class ApplicationUser : IdentityUser
{
}

ApplicationDbContext.cs

public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
    public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options)
        : base(options)
    {
    }

    protected override void OnModelCreating(ModelBuilder builder)
    {
        base.OnModelCreating(builder);
        // Customize the ASP.NET Identity model and override the defaults if needed.
        // For example, you can rename the ASP.NET Identity table names and more.
        // Add your customizations after calling base.OnModelCreating(builder);
    }
}

我只想拥有一个带有 asp.net 身份的空项目，最好在 SQL Server 中而不是在 localdb 中。有没有人有一个简单的指南或知道为什么它对我不起作用？

编辑1

public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{

    public ApplicationDbContext() : this("Data Source=ACLAP;Initial Catalog=tmpCore;Integrated Security=True;Connect Timeout=15;Encrypt=False;TrustServerCertificate=True;ApplicationIntent=ReadWrite;MultiSubnetFailover=False") { }
}

EDIT2 我已经把项目放到了github上。

github.com/KiBlob/test

Answer 1

只是一个想法，您是否在 appsettings.json 文件中定义了 DefaultConnection？

我的看起来像这样：

{
  "ConnectionStrings": {
    "DefaultConnection": "Server=[SERVER];Database=[DB];Trusted_Connection=True;MultipleActiveResultSets=true"
  },
  "Logging": {
    "IncludeScopes": false,
    "LogLevel": {
      "Default": "Debug",
      "System": "Information",
      "Microsoft": "Information"
    }
  }
}

尝试在那里设置连接，然后再次运行 Update-Database。

注意：如果您的解决方案中有多个项目，请确保包管理器控制台中的默认项目指向在运行更新数据库之前设置连接的项目。