我正在try 使用ServiceCollection
和Autofac在控制台应用程序中填充ServiceCollection
.我通读了the documentation篇,但没有针对我的具体场景的指南.
我面临的问题是,当我使用接口类型询问时,构建的ServiceCollection找不到实现.我认为AutoFac并没有在ServieCollection
人中普及.
Program.cs
using System.Reflection;
using Autofac;
using Autofac.Extensions.DependencyInjection;
using Core.Interfaces;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
var serviceProvider = new ServiceCollection()
.AddLogging(cfg => cfg.AddConsole())
.Configure<LoggerFilterOptions>(cfg => cfg.MinLevel = LogLevel.Information)
.AddAutofac(cfg =>
{
cfg.RegisterAssemblyTypes(Assembly.Load("Core")).AsImplementedInterfaces();
})
.BuildServiceProvider();
var markDownParser = serviceProvider.GetRequiredService<IMarkDownParser>();
MarkDownParser.cs
namespace Core;
public class MarkDownParser : IMarkDownParser
{
private readonly ILogger<MarkDownParser> _logger;
public MarkDownParser(ILogger<MarkDownParser> logger)
{
_logger = logger;
}
}
IMarkDownParser.cs
namespace Core.Interfaces;
public interface IMarkDownParser
{
object Parse(string text);
}
错误:
Unhandled exception. System.InvalidOperationException: No service for type 'Core.Interfaces.IMarkDownParser' has been registered.
at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
at Program.<Main>$(String[] args) in /home/amir/RiderProjects/git-blog/ConsoleApp/Program.cs:line 20