判断音响码是否存在

Areas/Api/Controllers/v1/MainServer/MerchantInfoController.cs

@@ -762,7 +762,11 @@ namespace MySystem.Areas.Api.Controllers.v1
             JsonData data = JsonMapper.ToObject(value);
             Dictionary<string, object> Obj = new Dictionary<string, object>();
             string Sn = data["Sn"].ToString();
-            string Machine = data["Machine"].ToString();
+            string Machine = "";
+            if(value.Contains("\"Machine\""))
+            {
+                Machine = data["Machine"].ToString();
+            }
             if(Sn.Length > 20)
             {
                 Sn = System.Web.HttpUtility.UrlDecode(Sn);
@@ -774,7 +778,7 @@ namespace MySystem.Areas.Api.Controllers.v1
                 Sn = Sn.TrimEnd('\0');
                 Sn = Sn.Substring(0, Sn.Length - 8);
             }
-            if(Machine == Sn)
+            if(Machine == Sn || Machine == "")
             {
                 MerchantQrCode code = new MerchantQrCodeService().Query(Sn);
                 MerchantInfo query = new MerchantInfoService().Query(code.MerchantId);