DB 上下文没有得到正确的连接字符串这里有什么问题

Question

我正在尝试诊断我的数据库上下文配置中的问题，但是它永远不会在那里遇到刹车点，因为这是我发出 dotnet ef 更新命令。例如，我想要一些方法来调试我正在使用 ef 7 和 .net 7

中的内容

protected override void OnConfiguring(DbContextOptionsBuilder options)
{
    var test2 = _configuration.GetConnectionString("DefaultConnection");
    options.UseSqlServer(test2);
    options.EnableSensitiveDataLogging();
}

这是我的背景

public class StubsDBContext :IdentityDbContext<ApplicationUser>
{
      private readonly IConfiguration _configuration;
      public StubsDBContext()
       {

       }

        public StubsDBContext(DbContextOptions<StubsDBContext> options , IConfiguration configuration) : base(options)
        {
            _configuration = configuration;
        }
        public DbSet<Stub> Stubs { get; set; }
        public DbSet<Stub> Stubs3 { get; set; }

        public string GetConnectionString()
        {
            return ConnectionStrings.DefaultConnection;
        }
        protected override void OnConfiguring(DbContextOptionsBuilder options)
        {
            var test2 = _configuration.GetConnectionString("DefaultConnection");

            options.UseSqlServer(test2);

            options.EnableSensitiveDataLogging();

        }
        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);
        }
}

我从我的 program.cs 添加它，因为此时测试确实检索到正确的连接字符串

public static IServiceCollection AddInfrastructureServices(this IServiceCollection services, IConfiguration configuration)
{
        string? TEST = configuration.GetConnectionString("DefaultConnection");
        services.AddDbContext<StubsDBContext>(options =>
       options.UseSqlServer(TEST,
           builder => builder.MigrationsAssembly(typeof(StubsDBContext).Assembly.FullName)));
        services.AddIdentity<ApplicationUser, IdentityRole>()
          .AddEntityFrameworkStores<StubsDBContext>()
          .AddDefaultTokenProviders();

        services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
        return services;
}

应用设置

 {

  "ConnectionStrings": {
    "DefaultConnection": "removed for security"

  },
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft.AspNetCore": "Warning"
    },
    "AppSettings": {
      "Secret": "removed for security"
    }
  }
}

这是我的程序.cs

  public static void Main(string[] args)
  {
        var builder = WebApplication.CreateBuilder(args);
        var provider = builder.Services.BuildServiceProvider();
        var config = provider.GetService<IConfiguration>();


        _configuration = new ConfigurationBuilder()
       .SetBasePath(Directory.GetCurrentDirectory())
       .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
       .Build();

        builder.Services.AddInfrastructureServices(builder.Configuration);
     //+   builder.Services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
       
        // Add services to the container.
        // Add services to the container.
        builder.Services.AddControllers();

        var appSettingsSection = config.GetSection("AppSettings");
        


        builder.Services.Configure<AppSettings>(appSettingsSection);
        builder.Services.AddControllers();
        // Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
        builder.Services.AddEndpointsApiExplorer();
        builder.Services.AddSwaggerGen();

        var app = builder.Build();


...removed for length
}