Merge branch 'hotfix/detail'

@@ -14,6 +14,7 @@ const detailHelper = require(`${mRoot}/detail-helper`);
 const moment = require('moment');
 const DEFAULT_AVATAR_ICO = 'https://static.yohobuy.com/images/v3/boy.jpg';
 const _ = require('lodash');
+const qs = require('querystring');
 
 /**
  * 首屏渲染商品详情
@@ -51,9 +52,11 @@ const showMainBack = (req, res) => {
     return service.showMainBackAsync({
         pid: pid
     }).then((result)=> {
-
         if (_.get(result, 'data.product_skn')) {
-            res.redirect(301, helpers.getUrlBySkc(result.data.product_skn));
+
+            let query = !_.isEmpty(req.query) ? `?${qs.stringify(req.query)}` : '';
+
+            res.redirect(301, `${helpers.getUrlBySkc(result.data.product_skn)}${query}`);
         }
 
         res.end();