User.Claims Is Empty In MVC Application

Question

I\'m working on upgrading my .NET Core 2.2 MVC application to 3.0. In this application I\'m authenticating to a controller using a JWT token. The token contains several claims,

Answer 1

It seems the user isn't authenticated at all.

With asp.net core 3.0 routing has changed to Endpoint routing. You can opt-out by setting EnableEndpointRouting = false.

But that seems not the case here. That means you'll have to include certain services when you use them, like authentication and authorization:

public void Configure(IApplicationBuilder app)
{
  ...

  app.UseStaticFiles();

  app.UseRouting();
  app.UseCors();

  app.UseAuthentication();
  app.UseAuthorization();

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

And most important, in that order. As documentated here: Migrate Startup.Configure.