如何检索Azure Web App上托管的.NET Core中的AD用户名？

Question

I have used HTTPContext.User.Identity.Name to get the current users name. It works via localhost but returns null on Azure Web App.

HTTPContext.User.Identity.Name has worked before when using .Net Framework but I am now using .Net Core which doesn't work.

Current code:

private void SetUpUser()
{
    var identityName = HttpContext.User.Identity.Name;
    identityName = identityName.Replace("@example.com", "").Replace(".", "").Replace("example\\", "");
    string userName = identityName.Replace(".", "");
}

Error message:

NullReferenceException: Object reference not set to an instance of an object. CommissionInputApp.Controllers.HomeController.SetUpUser() in HomeController.cs

Answer 1

Do you set the NameClaimType in OpenIdConnectOptions configuration:

options.TokenValidationParameters = new TokenValidationParameters() { NameClaimType = "name" };

I haven't create my own application & Api , just use fabrikamb2cdomain as code sample provides , even though some method is obsolete in .net core 2.2 , for example ,cache.HasStateChanged . The authecation still works and get correct name with User.Identity.Name , HttpContext.User.Claims also be set :

Also you can provide more details and code to us to reproduce the issue.