ASP.NET Core 3.1 中使用Autofac实现属性注入

1.在项目NuGet程序包中引用：Autofac.Extensions.DependencyInjection

2.Program程序入口类中替换容器

 public static IHostBuilder CreateHostBuilder(string[] args) => 
            Host.CreateDefaultBuilder(args)
            .ConfigureWebHostDefaults(webBuilder => { webBuilder.UseStartup(); })
            .UseServiceProviderFactory(new AutofacServiceProviderFactory());//Step 1：容器替换

3.Startup类中配置加入控制器替换规则

 public void ConfigureServices(IServiceCollection services)
        {
            services.Replace(ServiceDescriptor.Transient()); //Step 2：在Startup 服务配置中加入控制器替换规则
            services.AddControllers();
        }

4.定义特性标注

    /// 

    /// 依赖注入特性
    /// 
    public class DependencyRegisterAttribute : Attribute
    {

    }

    //添加特性标注
    [DependencyRegister]
    pu