How to redirect to login page in ABP? - authentication

Question

I download the .NET Core sample from ASP.NET Boilerplate website,
change the DB connection string, update DB,
run Web Api, show the Swagger successfully,
add a Home/Index View, change Home/Index action to return the View, not Swagger,
run again, show home page successfully,
then add a Home.Account Controller and Home.Account View, login page.
Add AbpMvcAuthentication attribute on Home/Index, what I want is when access Home, redirect to login page.
When I go to the Home, it shows an empty page, not Home, nor login page. It seems authenticate failed, but did not redirect to login page.
My question is: how to let AbpMvcAuthentication know which page to redirect when authenticate failed?

Answer 1

There is no login page for the *.Web.Host project, where the redirect to Swagger is.
You should change your Startup Project to *.Web.Mvc instead:
If you just want to login, consider using Swagger authentication helpers from the browser console:
abp.swagger.login();
To answer your question, you can re-enable authentication redirect by reverting commit 92b6270:
// What it was (and what you want)
services.AddAuthentication()
.AddJwtBearer(options =>
// What it is
services.AddAuthentication(options =>
{
options.DefaultAuthenticateScheme = "JwtBearer";
options.DefaultChallengeScheme = "JwtBearer";
}).AddJwtBearer("JwtBearer", options =>
Startup.cs:
app.UseAuthentication();
app.UseJwtTokenMiddleware(); // Add this back
app.UseAbpRequestLocalization();
To be clear, this redirects to a blank page since there is no login page for the *.Web.Host project.
This is the opposite of the expected behaviour in ABP 401 response from API instead of redirect.
Also, you can configure login path for redirect:
You can configure that in Startup.cs:
IdentityRegistrar.Register(services);
AuthConfigurer.Configure(services, _appConfiguration);
// Add this line:
services.ConfigureApplicationCookie(options => options.LoginPath = "/Admin/Login");
Related docs: https://learn.microsoft.com/en-us/aspnet/core/migration/1x-to-2x/identity-2x