你会将下面的代码添加到你的Program.cs中吗?
builder.Services.AddControllersWithViews();
...
app.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
您可以查看Routing to controller actions in ASP.NET Core了解更多信息.
try 为MVC添加上述路由.