diff --git a/controllers/__init__.py b/controllers/__init__.py
index 0ee98e1..aae5e22 100644
--- a/controllers/__init__.py
+++ b/controllers/__init__.py
@@ -35,3 +35,32 @@ def get_request(self, httprequest):
     else:
         return HttpRequest(httprequest)
 root.get_request = MethodType(get_request, root)
+
+
+from odoo.http import session_gc
+
+WXAPP_SID = None
+
+def setup_session(self, httprequest):
+    # recover or create session
+    session_gc(self.session_store)
+
+    sid = httprequest.args.get('session_id')
+    explicit_session = True
+    if not sid:
+        sid = httprequest.headers.get("X-Openerp-Session-Id")
+    if not sid:
+        sid = httprequest.cookies.get('session_id')
+        explicit_session = False
+    wxapp_flag = 'Referer' in httprequest.headers and 'servicewechat.com' in httprequest.headers['Referer']
+    global WXAPP_SID
+    if wxapp_flag and WXAPP_SID:
+        sid = WXAPP_SID
+    if sid is None:
+        httprequest.session = self.session_store.new()
+        if wxapp_flag:
+            WXAPP_SID = httprequest.session.sid
+    else:
+        httprequest.session = self.session_store.get(sid)
+    return explicit_session
+root.setup_session = MethodType(setup_session, root)