如何从HostBuilder获取AutoFac的IComponentContext

Install-Package Autofac

using Autofac;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;

public class Program
{
    public static void Main(string[] args)
    {
        CreateHostBuilder(args).Build().Run();
    }

    public static IHostBuilder CreateHostBuilder(string[] args) =>
        Host.CreateDefaultBuilder(args)
            .UseServiceProviderFactory(new AutofacServiceProviderFactory())
            .ConfigureContainer<ContainerBuilder>(builder =>
            {
                // 在这里进行AutoFac的注册和配置
                builder.RegisterType<MyService>().As<IMyService>();
            })
            .ConfigureServices((hostContext, services) =>
            {
                // 在这里进行其他服务的注册和配置
                services.AddHostedService<MyWorker>();
            });
}

public class MyWorker : BackgroundService
{
    private readonly IComponentContext _componentContext;

    public MyWorker(IComponentContext componentContext)
    {
        _componentContext = componentContext;
    }

    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
    {
        // 使用IComponentContext进行相关操作
        var myService = _componentContext.Resolve<IMyService>();
        await myService.DoSomethingAsync();
    }
}