CSharp: Mediator Pattern in donet core 6

 

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/// <summary>     /// 中介者模式 Mediator Pattern 亦称： 调解人、控制器、Intermediary、Controller、Mediator     /// </summary>     public abstract class User     {           /// <summary>         ///         /// </summary>         protected IGroupChatMediator? _mediator;         /// <summary>         ///         /// </summary>         protected string _name;         /// <summary>         ///         /// </summary>         /// <param name="name"></param>         protected User(string name)         {             _name = name;         }         /// <summary>         ///         /// </summary>         public string Name => _name;         /// <summary>         ///         /// </summary>         /// <param name="mediator"></param>         public void SetMediator(IGroupChatMediator mediator) => _mediator = mediator;         /// <summary>         ///         /// </summary>         /// <param name="message"></param>         public abstract void Send(string message);         /// <summary>         ///         /// </summary>         /// <param name="message"></param>         public abstract void Receive(string message);           /// <summary>         ///         /// </summary>         /// <returns></returns>         public override string ToString()         {             return $"姓名：{Name}";         }     }     using Geovin.Du.DuMediator.GroupChat.Components.Common; using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Xml.Linq;   namespace Geovin.Du.DuMediator.GroupChat.Components {       /// <summary>     /// 中介者模式 Mediator Pattern 亦称： 调解人、控制器、Intermediary、Controller、Mediator     /// </summary>     public class ViberUser : User     {         public ViberUser(string name)             : base(name)         {         }           public override void Receive(string message) =>             Console.WriteLine($"{_name} 收到的信息: '{message}'");           public override void Send(string message)         {             if (_mediator == null)             {                 return;             }               Console.WriteLine($"{_name} 发出的信息: '{message}' 给团队");             _mediator.SendMessage(message, this);         }     } }       /// <summary>     /// 中介者模式 Mediator Pattern 亦称： 调解人、控制器、Intermediary、Controller、Mediator     /// </summary>     public interface IGroupChatMediator     {           /// <summary>         ///         /// </summary>         /// <param name="user"></param>         void AddParticipant(User user);         /// <summary>         ///         /// </summary>         /// <param name="message"></param>         /// <param name="sender"></param>         void SendMessage(string message, User sender);     }        /// <summary>     /// 中介者模式 Mediator Pattern 亦称： 调解人、控制器、Intermediary、Controller、Mediator     /// </summary>     public class ViberGroupChatMediator : IGroupChatMediator     {           /// <summary>         ///         /// </summary>         private readonly List<User> _chatParticipants = new();         /// <summary>         ///         /// </summary>         /// <param name="users"></param>         public ViberGroupChatMediator(params User[] users)         {             foreach (var user in users)             {                 AddParticipant(user);             }               Console.WriteLine();         }         /// <summary>         ///         /// </summary>         /// <param name="user"></param>         public void AddParticipant(User user)         {             Console.WriteLine($"{user.Name} 是新的聊天参与者.");               _chatParticipants.Add(user);             user.SetMediator(this);         }         /// <summary>         ///         /// </summary>         /// <param name="message"></param>         /// <param name="sender"></param>         public void SendMessage(string message, User sender)         {             foreach (var user in _chatParticipants.Where(user => user != sender))             {                 user.Receive(message);             }         }     }

　　

调用：

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1	Geovin.Du.DuMediator.GroupChat.GroupChatExecutor.Execute();

　　

 

 

输出：

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中介者模式 Mediator Pattern:Group chat demo -------------------------------------------------- 马三 是新的聊天参与者. 张四 是新的聊天参与者. 王五 是新的聊天参与者.   马三 发出的信息: '有人在吗？' 给团队 张四 收到的信息: '有人在吗？' 王五 收到的信息: '有人在吗？'   安琪 是新的聊天参与者. 王五 发出的信息: '我们在.' 给团队 马三 收到的信息: '我们在.' 张四 收到的信息: '我们在.' 安琪 收到的信息: '我们在.'