c# - 如何在 ASP.NET Core 3 预览版中使用 Lamar 2？

Question

我使用 ASP.NET Core 3 配置了 Lamar，但出现错误

System.InvalidCastException: 'Unable to cast object of type 'Microsoft.Extensions.DependencyInjection.ServiceCollection' to type 'Lamar.ServiceRegistry'.'

我在 Program 中的配置类(class):

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

        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.UseLamar();
                    webBuilder.UseStartup<Startup>();
                });
    }

和 Startup类(class):

public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        //public void ConfigureServices(IServiceCollection services)
        //{
        //    services.Configure<CookiePolicyOptions>(options =>
        //    {
        //        // This lambda determines whether user consent for non-essential cookies is needed for a given request.
        //        options.CheckConsentNeeded = context => true;
        //        options.MinimumSameSitePolicy = SameSiteMode.None;
        //    });
        //    services.AddMvc()
        //        .AddNewtonsoftJson();
        //}

        public void ConfigureContainer(ServiceRegistry services)
        {
            services.Configure<CookiePolicyOptions>(options =>
            {
                // This lambda determines whether user consent for non-essential cookies is needed for a given request.
                options.CheckConsentNeeded = context => true;
                options.MinimumSameSitePolicy = SameSiteMode.None;
            });

            // Supports ASP.Net Core DI abstractions
            services.AddMvc().AddNewtonsoftJson();            
            services.AddLogging();

            // Also exposes Lamar specific registrations
            // and functionality
            services.Scan(s =>
            {
                s.TheCallingAssembly();
                s.WithDefaultConventions();
            });
        }

根据我替换的文档 ConfigureServices与 ConfigureContainer但我得到了我上面提到的错误。



谁能帮我将 Lamar 与 ASP.NET Core 3 预览版一起使用？

更新
正如#Tom Style 所写，已接受的答案已经过时且已贬值，因此他将新答案放在了他的答案中。

Answer 1

您可以尝试用旧的 HostBuilder 替换 HostBuilder，如下所示:

 public static IWebHostBuilder CreateHostBuilder(string[] args) =>
        WebHost.CreateDefaultBuilder(args)
            .UseLamar()
            .UseUrls($"http://*:80")
            .UseStartup<Startup>();