diff --git a/app/controllers/homework_commons_controller.rb b/app/controllers/homework_commons_controller.rb
index 5842d2522..b25782026 100644
--- a/app/controllers/homework_commons_controller.rb
+++ b/app/controllers/homework_commons_controller.rb
@@ -114,6 +114,8 @@ class HomeworkCommonsController < ApplicationController
       logger.info("+++++++++++++++++#{@homework.publish_time}")
       @student_works = []
       if (params[:format] == "xlsx") || (params[:format] == "zip")
+        logger.info("++++++params[:format]params[:format]params[:format]params[:format]+++++++++++#{params[:format]}")
+
         normal_status(-1,"作业未发布")
       end
     else