Routes ASP.NET核心3.1区域返回404

我尝试了这个链接，但没有显示404区域错误

 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.AddControllersWithViews();

        services.AddDbContext<BCAContext>(options =>
                options.UseSqlServer(Configuration.GetConnectionString("BCAContext")));
    }

    // 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();
        }
        else
        {
            app.UseExceptionHandler("/Home/Error");
        }
        app.UseStaticFiles();

        app.UseRouting();

        app.UseAuthorization();

           app.UseEndpoints(endpoints => {
            endpoints.MapControllers();
            //endpoints.MapAreaControllerRoute(
            //    "Student",
            //    "Student",
            //    "Student/{controller=StudentExam}/{action=Index}/{id?}");

            endpoints.MapControllerRoute(name: "areas", pattern: "{area:exists}/{controller=StudentExam}/{action=Index}/{id?}");

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

      
        //database
        using (var serviceScope = app.ApplicationServices.GetService<IServiceScopeFactory>().CreateScope())
        {
            var context = serviceScope.ServiceProvider.GetRequiredService<BCAContext>();
            context.Database.EnsureDeleted();
            context.Database.EnsureCreated();
            //context.Database.Migrate();
        }
    }
}

索引页

@{
ViewData["Title"] = "Index";
Layout = "~/Areas/Student/Views/Shared/_Layout.cshtml";
 }

 <h1>Index</h1>

@{
ViewData[“标题”]=“索引”；
Layout=“~/Areas/Student/Views/Shared/_Layout.cshtml”；
}
指数

您可以为不同的区域添加这样的图案。对于学生区，添加以下代码段：

endpoints.MapControllerRoute(
                    name: "areas",
                    pattern: "{area:exists}/{controller=StudentExam}/{action=Index}/{id?}"
);

在控制器中，必须添加如下区域注释：

public class StudentExamController : Controller
  {
    [Area("Student")]
    public IActionResult Index()
    {
        return View();
    }
  }

---

你能试试这个图案吗？MapControllerOute（名称：“区域”，模式：“{area:exists}/{controller=Dashboard}/{action=Index}/{id？}”）；我应该删除或添加哪一行？删除您的学生地图区域控制器端点并使用上述命令抱歉，第一条注释有错误。您可以删除您的学生地图区域控制器行并添加此命令吗？MapControllerOute（名称：“区域”，模式：“{area:exists}/{controller=StudentExam}/{action=Index}/{id？}”）；不工作，我添加了你的问题代码见上文，我尝试了这个url，确定与否，这是dotnetcore的

public class StudentExamController : Controller
  {
    [Area("Student")]
    public IActionResult Index()
    {
        return View();
    }
  }