Nuget 引入：Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation
Startup.cs文件

  public void ConfigureServices(IServiceCollection services)
        {
            services.AddControllersWithViews();
            services.AddSession();

            //1.Nuget安装：Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation
            //2.配置
            services.AddRazorPages().AddRazorRuntimeCompilation();
        }