brand subdomain

@@ -31,9 +31,9 @@ module.exports = () => {
                     req.url = '/product/sale/special/detail';
                     break;
                 default: // 其它(识别为品牌)
-                    req.url = `/product/brand/${req.subdomains[0]}`;
-
-                    if (req.path === '/about') {
+                    if (!req.path) {
+                        req.url = `/product/brand/${req.subdomains[0]}`;
+                    } else if (req.path === '/about') {
                         req.url = `/product/about/${req.subdomains[0]}`;
                     }
                     break;