使用 MapFallbackToController 端点在本地与 iis express & kestrel 一起工作，在 IIS 上使用回退而不是更高优先级的路由

Question

在从 .net core 2.2 切换到 3.0，然后在本地切换到 3.1 之后，我们切换到端点路由。我有以下路线：

app.UseEndpoints(endpoints =>
        {
            // Using this for asp.net core identity
            endpoints.MapRazorPages();
            // Mapping 2 routes, one private, one public but that we don't want localized so in both cases was simpler to create an area
            endpoints.MapAreaControllerRoute("Back", "Back", "back/{controller=Home}/{action=Index}/{id?}");
            endpoints.MapAreaControllerRoute("Photo", "Photo", "photo/{controller=Photo}/{action=Index}/{id?}");
            // The default mapping for our front office, this works just fine in iis express
            endpoints.MapControllerRoute("default", "{lang:lang}/{controller=Home}/{action=Index}/{id?}");
            // Fallback is used mainly to redirect you from / to /defaultlanguage
            endpoints.MapFallbackToController("WrongEndpoint","Home");
        });

我使用以下博客的代码来检查我在两种环境中是否具有相同的端点：https : //dev.to/buhakmeh/endpoint-debugging-in-asp-net-core-3-applications-2b45

在这两种情况下，我都有预期的行为（我通过将该控制器放在一个有效的区域对其进行了测试）：我希望采用“默认”的路由优先级为 3，而回退为 2147483647，因此它显然被跳过了。

键入全名以忽略可选组件（如 mydomain/fr/Home/Index）仍会将我重定向到 IIS 下的回退控制器。

我不知道为什么它在 IIS 下的行为会与 IIS Express 不同。另请注意，剃刀页面和区域控制器都可以正常工作，只是默认路由失败并回退到良好状态，即回退。

删除回退也不会使默认控制器工作。

编辑 1：根据评论中的要求，完整的 startup.cs 波纹管

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using FranceMontgolfieres.Models;
using Microsoft.AspNetCore.Mvc.Infrastructure;
using Microsoft.Extensions.Hosting;
using Microsoft.AspNetCore.Diagnostics.HealthChecks;
using Microsoft.AspNetCore.Routing;

namespace FranceMontgolfieres
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
            Utilities.ConfigurationUtils.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.AddSingleton<IConfiguration>(Configuration);

            services
                .Configure<CookiePolicyOptions>(options =>
                {
                    // This lambda determines whether user consent for non-essential cookies is needed for a given request.
                    options.CheckConsentNeeded = context => true;
                    options.MinimumSameSitePolicy = SameSiteMode.None;
                });

            services
                .AddDbContext<FMContext>(options => options
                    .UseLazyLoadingProxies(true)
                    .EnableSensitiveDataLogging()
                    .UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

            services
                .AddDefaultIdentity<IdentityUser>()
                .AddRoles<IdentityRole>()
                .AddEntityFrameworkStores<FMContext>();

            services
                .AddMemoryCache();

            services.AddDistributedSqlServerCache(options =>
            {
                options.ConnectionString = Configuration.GetConnectionString("SessionConnection");
                options.SchemaName = "dbo";
                options.TableName = "SessionCache";
            });

            services.AddHttpContextAccessor();

            services
                .AddSession(options => options.IdleTimeout = TimeSpan.FromMinutes(30));

            services
                .AddControllersWithViews()
                .AddRazorRuntimeCompilation();
            services.AddRazorPages();
            services.Configure<RouteOptions>(options =>
            {
                options.ConstraintMap.Add("lang", typeof(LanguageRouteConstraint));
            });

        }


        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Performance", "CA1822:Mark members as static", Justification = "Called by asp.net core by convention")]
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseDatabaseErrorPage();
            }
            else
            {
                // TODO CRITICAL Remove before production
                app.UseDeveloperExceptionPage();
                app.UseDatabaseErrorPage();

                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.
                // TODO CRITICAL ENABLE BEFORE PRODUCTION
                // app.UseHsts();
            }

            //app.UseHttpsRedirection();
            app.UseRouting();
            app.UseStaticFiles();
            app.UseCookiePolicy();
            app.UseAuthentication();
            app.UseAuthorization();
            app.UseSession(); 

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapRazorPages();
                endpoints.MapAreaControllerRoute("Back", "Back", "back/{controller=Home}/{action=Index}/{id?}");
                endpoints.MapAreaControllerRoute("Photo", "Photo", "photo/{controller=Photo}/{action=Index}/{id?}");
                endpoints.MapControllerRoute("default", "{lang:lang}/{controller=Home}/{action=Index}/{id?}");
                endpoints.MapFallbackToController("WrongEndpoint","Home");
            });
        }
    }
}

编辑 2 ：根据 Lex Li 的评论，在部署的服务器上添加了 web 配置

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <location path="." inheritInChildApplications="false">
    <system.webServer>
      <handlers>
        <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModuleV2" resourceType="Unspecified" />
      </handlers>
      <aspNetCore processPath="dotnet" arguments=".\PROJECTNAMEEDITEDOUT.dll" stdoutLogEnabled="false" stdoutLogFile=".\logs\stdout" hostingModel="inprocess" />
    </system.webServer>
  </location>
</configuration>
<!--ProjectGuid: THERE IS A GUID HERE I REMOVED-->