我有一个使用泛型主机的.NET core控制台应用程序。我有一个工作类(ImageFileWatcher)和额外的类(ThumbnailProcessor),以及它的接口(IThumbnailProcessor)。我想使用Autofac实现来进行依赖注入,而不是通常的DI实现。我该怎么做?这是我的program.cs代码:
public class Program
{
public static void Main(string[] args)
{
CreateHostBuilder(args).Build().Run();
}
public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
.ConfigureAppConfiguration((hostContext,configBuilder) =>
{
configBuilder.AddEnvironmentVariables(prefix: "ImageService_");
})
.ConfigureServices((hostContext, services) =>
{
services.AddHostedService<ImageFileWatcher>();
services.AddSingleton<IThumbnailProcessor, ThumbnailProcessor>();
var config = hostContext.Configuration;
services.AddOptions<ImageConfig>()
.Configure(imageConfig =>
{
imageConfig.CompressionLevel = 0.99M;
})
.Bind(config.GetSection(nameof(ImageConfig)));
services.AddOptions<ImageSizeConfig>(ImageSizeConfig.Thumbnail)
.Configure(thumbnailSizeConfig =>
{
thumbnailSizeConfig.FilePrefix = "thumb-";
})
.Bind(config.GetSection("ImageConfig:thumbnail"));
services.Configure<ImageSizeConfig>(ImageSizeConfig.Medium, config.GetSection("ImageConfig:medium"));
services.Configure<ImageSizeConfig>(ImageSizeConfig.Large, config.GetSection("ImageConfig:large"));
});
}