更新会话超时时长

@@ -12,9 +12,10 @@ var grayroute = require("./mid/grayrouter");
 /*session 配置*/
 var options = {
     secret: 'yohobuy.shops', //session配置
-    cookie: {secure: false, maxAge: 3600000},
+    cookie: {secure: false, maxAge: 7200000},
     resave: false,
-    saveUninitialized: true
+    saveUninitialized: true,
+    rolling: true
 };
 
 /*老平台接口 配置*/