mobile refer

@@ -2,10 +2,12 @@
  * 手机访问检测
  */
 'use strict';
+const querystring = require('querystring');
+
 module.exports = () => {
     return (req, res, next) => {
         if (req.isMobile) {
-            return res.redirect(req.mobileUrl || `//m.yohobuy.com${req.url}`);
+            return res.redirect(req.mobileUrl || `//m.yohobuy.com${req.url}?${querystring.stringify(req.query)}`);
         }
 
         return next();