完善中间件

@@ -8,7 +8,7 @@ var urlFormat = require('../util/url');
 
 module.exports = (req, res, next) => {
     var loginUrl = 'http://www.yohobuy.com/signin.html',
-        referrer = urlFormat(req.get('Referrer') || req.originalUrl || '/', null, 'activity');
+        referrer = urlFormat(req.originalUrl || '/', null, 'activity');
 
     if (!req.cookies._UID) {
         loginUrl = loginUrl + '?refer=' + encodeURIComponent(referrer);