MQTT全局服务订阅，基本功能创建，标签打印等功能基本实现

ZR.Admin.WebApi/Program.cs

@@ -11,6 +11,7 @@ using ZR.Admin.WebApi.Framework;
 using ZR.Admin.WebApi.Hubs;
 using ZR.Admin.WebApi.Middleware;
 using ZR.Common.Cache;
+using ZR.Common.MqttHelper;
 
 var builder = WebApplication.CreateBuilder(args);
 
@@ -21,6 +22,12 @@ builder.Services.AddEndpointsApiExplorer();
 builder.Services.AddSwaggerGen();
 //注入HttpContextAccessor
 builder.Services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
+// 注册MyMqttConfig（依赖ILogger和IConfiguration）
+builder.Services.AddSingleton<MyMqttConfig>();
+// 注册MqttService为单例服务，并作为后台服务运行 !!!! 这样注册就行了 ================
+builder.Services.AddSingleton<MqttService>();
+builder.Services.AddHostedService(sp => sp.GetRequiredService<MqttService>());
+/// ===============================================================================
 // 跨域配置
 builder.Services.AddCors(builder.Configuration);
 // 显示logo