1 安裝依賴包

2 定義攔截器類

3 定義被代理的介面和實現代理介面的類

using Autofac.Extras.DynamicProxy;
using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApp_AutofacAop
{
    /// <summary>
    /// 定義一個介面
    /// </summary>
    public interface IAnimal
    {
        void Test(string Name);
    }

    
 
/// <summary>
    /// 繼承介面，並實現方法，給型別加上特性Attribute
    /// </summary>
    [Intercept(typeof(LogInterceptor))]
    public class Dog : IAnimal
    {
        public void Test(string Name)
        {
            Console.WriteLine("Dog Run");
        }
    }

    /// <summary>
    /// 繼承介面，並實現方法，給型別加上特性Attribute
    
 
/// </summary>
    [Intercept(typeof(LogInterceptor))]
    public class Pig : IAnimal
    {

        public void Test(string Name)
        {
            Console.WriteLine("Pig Run");
        }
    }

    /// <summary>
    /// 繼承介面，並實現方法，給型別加上特性Attribute
    /// </summary>
    [Intercept(typeof(LogInterceptor))]
    
 
public class Cat : IAnimal
    {
        public void Test(string Name)
        {
            Console.WriteLine("Cat Run");
        }
    }
}

4 初始化Autofac並註冊依賴

        #region 在應用的啟動地方構造Autofac容器並註冊依賴
        // 定義容器
        private static IContainer Container { get; set; }

        /// <summary>
        /// 初始化Autofac
        /// </summary>
        private static void AutofacInit()
        {
            var builder = new ContainerBuilder();

            // 註冊依賴
            builder.RegisterType<LogInterceptor>(); // 註冊攔截器
            builder.Register<Dog>(c => new Dog ()).As<IAnimal>().EnableInterfaceInterceptors();
            builder.RegisterType<Pig>().Named<IAnimal>("Pig").EnableInterfaceInterceptors();
            builder.RegisterType<Cat>().Named<IAnimal>("Cat").EnableInterfaceInterceptors();
            builder.RegisterType<AnimalManager>();

            Container = builder.Build();
        }
        #endregion

5 測試

完整測試程式碼如下

using System;

using Autofac;
using Autofac.Extras.DynamicProxy;

namespace ConsoleApp_AutofacAop
{
    class Program
    {
        static void Main(string[] args)
        {
            AutofacInit();

            TestMethod();

            Console.ReadLine();
        }

        #region 在應用的啟動地方構造Autofac容器並註冊依賴
        // 定義容器
        private static IContainer Container { get; set; }

        /// <summary>
        /// 初始化Autofac
        /// </summary>
        private static void AutofacInit()
        {
            var builder = new ContainerBuilder();

            // 註冊依賴
            builder.RegisterType<LogInterceptor>(); // 註冊攔截器
            builder.Register<Dog>(c => new Dog ()).As<IAnimal>().EnableInterfaceInterceptors();
            builder.RegisterType<Pig>().Named<IAnimal>("Pig").EnableInterfaceInterceptors();
            builder.RegisterType<Cat>().Named<IAnimal>("Cat").EnableInterfaceInterceptors();
            builder.RegisterType<AnimalManager>();

            Container = builder.Build();
        }
        #endregion

        #region 測試方法
        public static void TestMethod()
        {
            using (var scope = Container.BeginLifetimeScope())
            {
                var dog = scope.Resolve<AnimalManager>();
                dog.Test("para");

                var pig = scope.ResolveNamed<IAnimal>("Pig");
                pig.Test("para");

                var cat = scope.ResolveNamed<IAnimal>("Cat");
                cat.Test("para");
            }
        }
        #endregion
    }
}

執行結果：

參考資源

https://www.cnblogs.com/tomorrow0/p/14298352.html