C# AOP手动实现

1.用户注册接口和实现


    public interface IUserProcessor
    {
        void RegUser(User user);
    }
    public class UserProcessor : IUserProcessor
    {
        public void RegUser(User user)
        {
            Console.WriteLine("用户注册信息,Name:{0},PassWord:{1}", user.Name, user.PassWord);
        }
    } 

    public class User
    {
        public string Name { get; set; }
        public string PassWord { get; set; }
    }


2.通过静态编写代码的方式,装饰上面的用户注册


public class UserProcessorDecorator : IUserProcessor
    {
        public IUserProcessor UserProcessor { get; set; }
        public UserProcessorDecorator(IUserProcessor userprocessor)
        {
            UserProcessor = userprocessor;
        }
        public void RegUser(User user)
        {
            PreProceed(user);
            UserProcessor.RegUser(user);
            PostProceed(user);
        }
        public void PreProceed(User user)
        {
            Console.WriteLine("方法执行前调用!");
        }

        public void PostProceed(User user)
        {
            Console.WriteLine("方法执行后调用!");
        }
    } 


3.客户端调用

public class Client
    {
        public static void Run()
        {
            try
            {
                User user = new User() { Name = "lee", PassWord = "hello,world!" };
                IUserProcessor userprocessor = new UserProcessorDecorator(new UserProcessor());
                userprocessor.RegUser(user);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
    } 


输出

方法执行前
用户已注册。Name:lee,PassWord:123123123123
方法执行后


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