初步完成S7后台服务的改造

DMS.Infrastructure/Interfaces/IMessenger.cs

@@ -0,0 +1,38 @@
+using System;
+
+namespace DMS.Infrastructure.Interfaces
+{
+    /// <summary>
+    /// 消息传递接口，用于在不同组件之间发送消息
+    /// </summary>
+    public interface IMessenger
+    {
+        /// <summary>
+        /// 发送消息
+        /// </summary>
+        /// <typeparam name="T">消息类型</typeparam>
+        /// <param name="message">要发送的消息</param>
+        void Send<T>(T message);
+
+        /// <summary>
+        /// 注册消息接收者
+        /// </summary>
+        /// <typeparam name="T">消息类型</typeparam>
+        /// <param name="recipient">接收者</param>
+        /// <param name="action">处理消息的动作</param>
+        void Register<T>(object recipient, Action<T> action);
+
+        /// <summary>
+        /// 取消注册消息接收者
+        /// </summary>
+        /// <param name="recipient">接收者</param>
+        void Unregister(object recipient);
+
+        /// <summary>
+        /// 取消注册特定类型消息的接收者
+        /// </summary>
+        /// <typeparam name="T">消息类型</typeparam>
+        /// <param name="recipient">接收者</param>
+        void Unregister<T>(object recipient);
+    }
+}