我目前正在将本地开发的应用程序迁移到数字海洋中的Ubuntu 16.04 droplet。我使用的是.NET Core 3.1，并已将服务器配置得很好。但是，当我导航到使用[Authorize]属性的控制器上的端点时，我仅在生产服务器上（非本地）收到以下异常：

An unhandled exception has occurred while executing the request.
System.InvalidOperationException: Endpoint App.Controllers.RsvpController.Index contains authorization metadata, but a middleware was not found that supports authorization.
Configure your application startup by adding app.UseAuthorization() inside the call to Configure(..) in the application startup code. The call to app.UseAuthorization() must appear between app.UseRouting() and app.UseEndpoints(...).
at Microsoft.AspNetCore.Routing.EndpointMiddleware.ThrowMissingAuthMiddlewareException(Endpoint endpoint)
at Microsoft.AspNetCore.Routing.EndpointMiddleware.Invoke(HttpContext httpContext)
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware.<Invoke>g__Awaited|6_0(ExceptionHandlerMiddleware middleware, HttpContext context, Task task)
fail: Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware[1]
An unhandled exception has occurred while executing the request.

这是我的Configure()方法在Startup.cs中的样子：

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler("/Home/Error");
                // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
                app.UseHsts();
            }

            app.UseStaticFiles();

            app.UseRouting();

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

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllerRoute(
                    name: "default",
                    pattern: "{controller=Home}/{action=Index}/{id?}");
            });
        }

我也在ConfigureServices()中使用了这个函数：

services.AddAuthentication(options =>
            {
                options.DefaultScheme = CookieAuthenticationDefaults.AuthenticationScheme;
                options.DefaultChallengeScheme = CookieAuthenticationDefaults.AuthenticationScheme;
            }).AddCookie(options =>
            {
                options.LoginPath = new PathString("/Account/Login/");
                options.AccessDeniedPath = new PathString("/Account/Forbidden/");
            });

我的控制器在整个控制器类周围有[Authorize]属性：

[Authorize]
    public class RsvpController : Controller
    {
        ...
    }

我无法找出问题所在，因为它在本地工作。我尝试在本地将ASPNETCORE_ENVIRONMENT更改为“Production”，以查看是否有基于此的标记，但我仍然遇到问题。提前感谢您的帮助！