内置 DI

ASP.NET Core 内置 DI，当然你也可以使用别的 DI 实现。

换用 PostgreSQL

Startup 有注释的位置就是更改：

public void ConfigureServices(IServiceCollection services)
{
    // Store connection string as a var
    var connectionString = Configuration.GetConnectionString("DefaultConnection");
    // Store assembly for migrations
    var migrationsAssembly = typeof(Startup).GetTypeInfo().Assembly.GetName().Name;
    // Replace DbContext database form SqLite in template to Postgres
    services.AddDbContext<ApplicationDbContext>(options =>
        options.UseNpgsql(connectionString));
    services.AddIdentity<ApplicationUser, IdentityRole>()
        .AddEntityFrameworkStores<ApplicationDbContext>()
        .AddDefaultTokenProviders();
    services.AddMvc();
    services.Configure<IISOptions>(iis =>
    {
        iis.AuthenticationDisplayName = "Windows";
        iis.AutomaticAuthentication = false;
    });
    var builder = services.AddIdentityServer(options =>
    {
        options.Events.RaiseErrorEvents = true;
        options.Events.RaiseInformationEvents = true;
        options.Events.RaiseFailureEvents = true;
        options.Events.RaiseSuccessEvents = true;
    })
        // Use out Postgres Database for storing configuration data
        .AddConfigurationStore(configDb =>
        {
            configDb.ConfigureDbContext = db => db.UseNpgsql(connectionString,
            sql => sql.MigrationsAssembly(migrationsAssembly));
        })
        // Use out Postgres Database for storing operational data
        .AddOperationalStore(operationalDb =>
        {
            operationalDb.ConfigureDbContext = db => db.UseNpgsql(connectionString,
            sql => sql.MigrationsAssembly(migrationsAssembly));
        })
        .AddAspNetIdentity<ApplicationUser>();
    if (Environment.IsDevelopment())
    {
        builder.AddDeveloperSigningCredential();
    }
    else
    {
        throw new Exception("need to configure key material");
    }
    services.AddAuthentication()
        .AddGoogle(options =>
        {
            options.ClientId = "708996912208-9m4dkjb5hscn7cjrn5u0r4tbgkbj1fko.apps.googleusercontent.com";
            options.ClientSecret = "wdfPY6t8H8cecgjlxud__4Gh";
        });
}

ApplicationUser 是我们回头要自定义使用的。
它继承自 IdentityUser，IdentityUser 是 Microsoft.AspNetCore.Identity.IdentityUser 的默认实现。

appsettings.json：

{
  "ConnectionStrings": {
    "DefaultConnection": "Server=localhost;Port=5432;Database=archdb_dev;User Id=arch_agent;Password=~pass123~;"
  }
}