Unable to resolve service for type 'Microsoft.Extensions.Logging.ILogger' while attempting to activate 'xxxxx.Controllers.xxxxController'.

Unable to resolve service for type 'Microsoft.Extensions.Logging.ILogger' while attempting to activate 'xxxxx.Controllers.xxxxController'.

构造注入时需要加入类名

 

public class BookSizesController : Controller
    {
        private readonly ILogger<BookSizesController> _logger;

        public xxxxController(ILogger<xxxxController> logger)
        {
            _logger = logger;
        }
}