fix

router/lesson.js

@@ -23,7 +23,7 @@ router.get("/getMac", function (req, res)
     ljRetState.code = 200;
     ljRetState.data = mac;
     ljRetState.success = true;
-    logHelper.info(aa);
+    logHelper.info(mac);
     res.setHeader("Access-Control-Allow-Origin", "*");
     res.json(ljRetState);