在我的Swagger页面上得到常见的“响应状态是404 https：//localhost：7247/swagger/v1/swagger.json”错误。
如果我手动打开并访问页面，我不会得到任何ASP.NET错误，我也只会得到一个404响应。
此问题的大多数示例都在控制台中显示错误，可以解决这些错误以修复生成的swagger.json的缺失。
在我的例子中，当我运行我的ASP.NETCore应用程序时，终端中没有显示任何错误。
运行.NET 7.0，我的大多数nuget包都是7.0.12版本
我只定义了2个控制器，通过编译设置禁用这两个控制器并不能解决这个问题，所以我不相信这是控制器路由配置错误导致的问题。
我的Program.cs如下：

public static async Task Main(string[] args)
{
    var builder = WebApplication.CreateBuilder(args);

    var config = EnsureConfig(builder);
    builder.Services.AddDbContext<NotesDbContext>(options =>
    {
        options.UseNpgsql(config.Database.ConnectionString);
    });

    EnsureIdentity(builder, config);

    builder.Services.AddControllers();

    if (builder.Environment.IsDevelopment())
    {
        EnsureSwagger(builder); //Breakpoint here does get hit
    }

    builder.Services.AddBusinessServices();

    var app = builder.Build();

    using (var scope = app.Services.CreateScope())
    {
        var dbInitService = scope.ServiceProvider.GetRequiredService<IDatabaseInitService>();
        await dbInitService.InitAsync();
    }

    app.UseHttpsRedirection();

    if (app.Environment.IsDevelopment())
    {
        app.UseSwagger();  //Breakpoint here does get hit
        app.UseSwaggerUI();
    }

    app.UseAuthentication();
    app.UseAuthorization();

    app.UseStaticFiles();

    app.MapControllers();
    app.MapFallbackToFile("index.html");

    await app.RunAsync();
}

private static NotesConfig EnsureConfig(WebApplicationBuilder builder)
{
    var config = builder.Configuration.Get<NotesConfig>() ??
                 throw new ConfigurationErrorsException(
                     "Invalid Configuration, please validate configuration integrity"
                 );
    config.Validate();

    builder.Services.AddSingleton(config);
    return config;
}

private static void EnsureSwagger(WebApplicationBuilder builder)
{
    builder.Services.AddEndpointsApiExplorer();
    builder.Services.AddSwaggerGen(options =>
    {
        options.SwaggerDoc("Notes", new()
        {
            Description = "Open API Docs for Notes v1",
            Title = "Notes",
            Version = "v1",
            Contact = new()
            {
                Email = "st[email protected]",
                Name = "Steffen Blake",
                Url = new Uri("https://technically.fun"),
            }
        });
        options.AddSecurityDefinition("Bearer", new()
        {
            In = ParameterLocation.Header,
            Description = "Please insert JWT with Bearer into field",
            BearerFormat = "Bearer <token>",
            Name = "Authorization",
            Type = SecuritySchemeType.ApiKey
        });
        options.AddSecurityRequirement(new OpenApiSecurityRequirement
        {
            {
                new OpenApiSecurityScheme
                {
                    Reference = new OpenApiReference
                    {
                        Type = ReferenceType.SecurityScheme,
                        Id = "Bearer"
                    }
                },
                // scopes
                new string[] { }
            }
        });
    });
}

private static void EnsureIdentity(WebApplicationBuilder builder, NotesConfig config)
{
    builder.Services
        .AddDefaultIdentity<NotesUser>(options =>
        {
            options.Lockout = config.Identity.Lockout;
            options.Password = config.Identity.Password;
            options.SignIn = config.Identity.SignIn;
            options.User = config.Identity.User;
        })
        .AddRoles<IdentityRole>()
        .AddEntityFrameworkStores<NotesDbContext>();

    builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
        .AddJwtBearer(options =>
        {
            var key = Encoding.UTF8.GetBytes(config.Signing.JWTSecret);
            options.TokenValidationParameters = new()
            {
                ValidateIssuer = true,
                ValidateAudience = true,
                ValidateLifetime = true,
                ValidateIssuerSigningKey = true,
                ValidIssuer = NotesConstants.JWT_ISSUER,
                ValidAudience = NotesConstants.JWT_ISSUER,
                IssuerSigningKey = new SymmetricSecurityKey(key)
            };
        });
}

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我猜这是一个“你在你的服务或应用程序上声明的注册顺序稍微错误，所以它默默地失败了”的场景，所以我一直在翻转声明的顺序，看看它是否补救了这种情况，但到目前为止还没有骰子。
也有可能是我的swagger配置的某个部分是错误的，我猜，导致它默默地失败了？