添加IdentityServer4的登录UI

https://github.com/IdentityServer/IdentityServer4.Quickstart.UI/tree/master

下载zip包，把Quickstart、Views、wwwroot三个文件夹复制到你的IdentityServer4项目根目录下，如果使用.netcore 3.0以上，在StartUp.cs中：

public void ConfigureServices(IServiceCollection services)
{
    services.AddControllersWithViews().AddRazorRuntimeCompilation();
    //……

将

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

改为：

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

https://identityserver4.readthedocs.io/en/latest/quickstarts/2_interactive_aspnetcore.html

https://github.com/IdentityServer/IdentityServer4.Quickstart.UI/tree/master