Startup.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using ExampleAPI.Installers;
using SwaggerOptions =ExampleAPI.Options.SwaggerOptions;
using ExampleAPI.Helpers;
using AutoMapper;

namespace ExampleAPI
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.InstallServicesInAssembly(Configuration);
        }

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

            app.UseRouting();
            app.UseCors("NNCors");
            app.UseHttpsRedirection();
            app.UseAuthentication();
            app.UseAuthorization();


            /// Use Swagger
            var swaggerOptions = new SwaggerOptions();
            Configuration.GetSection(nameof(SwaggerOptions)).Bind(swaggerOptions);

            app.UseSwagger(option => { option.RouteTemplate = swaggerOptions.JsonRoute; });

            app.UseSwaggerUI(option =>
            {
                option.SwaggerEndpoint(swaggerOptions.UiEndpoint, swaggerOptions.Description);
            });
            /// End Swagger Code

            app.UseMiddleware<JWTHelper>();
            app.UseMiddleware<LogHelper>();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
            });

            app.UseXpoDemoData();
            app.ApplicationServices.GetService<IMapper>().ConfigurationProvider.AssertConfigurationIsValid();
        }
    }
}