设计模式学习笔记--职责链模式

using System;

namespace ChainOfResponsibility
{
    /// <summary> 
    /// 作者：bzyzhang
    /// 时间：2016/6/1 6:54:00 
    /// 博客地址：http://www.cnblogs.com/bzyzhang/
    /// Handler说明：本代码版权归bzyzhang所有，使用时必须带上bzyzhang博客地址 
    /// </summary> 
    public abstract class Handler
    {
        protected Handler successor;

        public void SetSuccessor(Handler successor)
        {
            this.successor = successor;
        }

        public abstract void HandleRequest(int request);
    }
}

using System;

namespace ChainOfResponsibility
{
    /// <summary> 
    /// 作者：bzyzhang
    /// 时间：2016/6/1 6:56:18 
    /// 博客地址：http://www.cnblogs.com/bzyzhang/
    /// ConcreteHandler1说明：本代码版权归bzyzhang所有，使用时必须带上bzyzhang博客地址 
    /// </summary> 
    public class ConcreteHandler1:Handler
    {
        public override void HandleRequest(int request)
        {
            if (request >= 0 && request < 10)
            {
                Console.WriteLine("{0}处理请求{1}",this.GetType().Name,request);
            }
            else if(successor != null)
            {
                successor.HandleRequest(request);
            }
        }
    }
}

using System;

namespace ChainOfResponsibility
{
    /// <summary> 
    /// 作者：bzyzhang
    /// 时间：2016/6/1 6:59:24 
    /// 博客地址：http://www.cnblogs.com/bzyzhang/
    /// ConcreteHandler2说明：本代码版权归bzyzhang所有，使用时必须带上bzyzhang博客地址 
    /// </summary> 
    public class ConcreteHandler2:Handler
    {
        public override void HandleRequest(int request)
        {
            if (request >= 10 && request < 20)
            {
                Console.WriteLine("{0}处理请求{1}", this.GetType().Name, request);
            }
            else if (successor != null)
            {
                successor.HandleRequest(request);
            }
        }
    }
}

using System;

namespace ChainOfResponsibility
{
    /// <summary> 
    /// 作者：bzyzhang
    /// 时间：2016/6/1 7:00:21 
    /// 博客地址：http://www.cnblogs.com/bzyzhang/
    /// ConcreteHandler3说明：本代码版权归bzyzhang所有，使用时必须带上bzyzhang博客地址 
    /// </summary> 
    public class ConcreteHandler3:Handler
    {
        public override void HandleRequest(int request)
        {
            if (request >= 20 && request < 30)
            {
                Console.WriteLine("{0}处理请求{1}", this.GetType().Name, request);
            }
            else if (successor != null)
            {
                successor.HandleRequest(request);
            }
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ChainOfResponsibility
{
    class Program
    {
        static void Main(string[] args)
        {
            Handler h1 = new ConcreteHandler1();
            Handler h2 = new ConcreteHandler2();
            Handler h3 = new ConcreteHandler3();
            h1.SetSuccessor(h2);
            h2.SetSuccessor(h3);

            int[] requests = { 2,5,14,22,18,3,27,20};

            foreach (int request in requests)
            {
                h1.HandleRequest(request);
            }
        }
    }
}