diff --git a/app/api/mobile/apis/cnmooc.rb b/app/api/mobile/apis/cnmooc.rb
index 7546fd58..720ac26b 100644
--- a/app/api/mobile/apis/cnmooc.rb
+++ b/app/api/mobile/apis/cnmooc.rb
@@ -43,9 +43,11 @@ module Mobile
           requires :accessType, type: Integer, desc: "资源类型"
         end
         get "source_url" do
-          user_source = UserSource.find_by_user_id(params[:userId])
-          return {error: -1, messages: "用户不存在，请先创建用户"} if user_source.blank?
-          self.logged_user = user_source.user
+          if session[:user_id].blank?
+            user = User.find(params[:userId])
+            return { error: -1, messages: "用户不存在，请先创建用户" } unless user.user_source
+            session[:user_id] = user.user_source.id
+          end
           CnmoocsService.new.source_url(params)
         end