fix bug

@@ -4,6 +4,8 @@
  * @date: 2016/6/16
  */
 'use strict';
+const _ = require('lodash');
+const qs = require('querystring');
 
 module.exports = () => {
     return (req, res, next) => {
@@ -67,11 +69,19 @@ module.exports = () => {
                 }
                 default: // 其它(识别为品牌)
                 { // eslint-disable-line
+                    let queryString = (function() {
+                        if (!_.isEmpty(req.query)) {
+                            return '&' + qs.stringify(req.query);
+                        } else {
+                            return '';
+                        }
+                    }());
+
                     req.query.domain = req.subdomains[0];
                     if (!req.path || req.path === '/') {
-                        req.url = `/product/index/brand?domain=${req.subdomains[0]}`;
+                        req.url = `/product/index/brand?domain=${req.subdomains[0]}${queryString}`;
                     } else if (req.path === '/about') {
-                        req.url = `/product/index/about?domain=${req.subdomains[0]}`;
+                        req.url = `/product/index/brand?domain=${req.subdomains[0]}${queryString}`;
                     }
                     break;
                 }