初步完成S7后台服务的改造

DMS.Infrastructure/Extensions/S7ServiceExtensions.cs

@@ -0,0 +1,32 @@
+using DMS.Application.Interfaces;
+using DMS.Infrastructure.Interfaces;
+using DMS.Infrastructure.Interfaces.Services;
+using DMS.Infrastructure.Services;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace DMS.Infrastructure.Extensions
+{
+    /// <summary>
+    /// S7服务扩展方法
+    /// </summary>
+    public static class S7ServiceExtensions
+    {
+        /// <summary>
+        /// 添加S7服务
+        /// </summary>
+        public static IServiceCollection AddS7Services(this IServiceCollection services)
+        {
+            // 注册服务
+            services.AddSingleton<IS7ServiceFactory, S7ServiceFactory>();
+            services.AddSingleton<IS7ServiceManager, S7ServiceManager>();
+            
+            // 注册后台服务
+            services.AddHostedService<S7BackgroundService>();
+            
+            // 注册优化的后台服务（可选）
+            // services.AddHostedService<OptimizedS7BackgroundService>();
+
+            return services;
+        }
+    }
+}