Question

我正在尝试将结构图注入.net core 3.0 Web API，但是连续不断地在Program.cs类中收到错误消息。我还没有找到任何与结构图有关的解决方案，每个人都在讨论Autofac

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.UseStartup<Startup>();
                });

    }

我的启动课程是

 public class Startup
    {
        public IServiceProvider ConfigureServices(IServiceCollection services)
        {

            services.AddControllers();

            var container = new Container();
            container.Configure(config =>
            {
                config.AddRegistry(new CustomRegistry());
                config.Populate(services);
            });

            return container.GetInstance<IServiceProvider>();
        }


        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }

            app.UseRouting();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
            });
        }
    }

如果您有任何建议，请告诉我。谢谢您的帮助！

Answer 1

Program.cs在代码下添加AutofacServiceProviderFactory

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

然后在StartUp.cs中添加ConfigureContainer

public void ConfigureContainer(ContainerBuilder builder)
{
    builder.RegisterAssemblyTypes(typeof(Program).Assembly).
        Where(x => x.Name.EndsWith("service", StringComparison.OrdinalIgnoreCase)).AsImplementedInterfaces();
            builder.RegisterDynamicProxy();

}

在dotnet core 3.0中更改ioc方式

System.NotSupportedException：'不支持返回System.IServiceProvider的配置服务。与结构图

1 个答案: