.net core、.net8中間件中不能注入Service服務，報錯：Cannot resolve scoped service 'XXX' from root provider

中間件中如果想用Service服務，不能用注入，需要這樣寫：

using (var serviceCope = httpContext.RequestServices.CreateScope())
{
    ISysSettingService? _sysSettingService = serviceCope.ServiceProvider.GetService<ISysSettingService>();
    if (_sysSettingService != null){...}
}

 來源：https://www.cnblogs.com/shipengfei/p/16092063.html