创建签名验证自定义中间件 ,优化代码结构

QRCodeService/Infrastructure/Middlewares/CheckSignAttribute.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace QRCodeService.Infrastructure.Middlewares
+{
+    public class CheckSignAttribute:Attribute
+    {
+        public Type ModelType { get; set; }
+
+        public CheckSignAttribute(Type type)
+        {
+            ModelType = type;
+        }
+    }
+}