问从web api在令牌中添加声明

EN

public class ProfileService : IProfileService
{
    public Task GetProfileDataAsync(ProfileDataRequestContext context)
    {
        string subject = context.Subject.Claims.ToList().Find(s => s.Type == "sub").Value;
        try
        {
            // Get Claims From Database, And Use Subject To Find The Related Claims, As A Subject Is An Unique Identity Of User
            //List<string> claimStringList = ......
            if (claimStringList == null)
            {
                return Task.FromResult(0);
            }
            else {
                List<Claim> claimList = new List<Claim>();
                for (int i = 0; i < claimStringList.Count; i++)
                {
                    claimList.Add(new Claim("role", claimStringList[i]));
                }
                context.IssuedClaims = claimList.Where(x => context.RequestedClaimTypes.Contains(x.Type));
                return Task.FromResult(0);
            }
        }
        catch
        {
            return Task.FromResult(0);
        }
    }

    public Task IsActiveAsync(IsActiveContext context)
    {
        return Task.FromResult(0);
    }
}

public void ConfigureServices(IServiceCollection services)
{
    services.AddIdentityServer()..Services.AddTransient<IProfileService, ProfileService>();
}