diff --git a/app/controllers/homework_commons_controller.rb b/app/controllers/homework_commons_controller.rb
index 794ccb228..bd7a36e98 100644
--- a/app/controllers/homework_commons_controller.rb
+++ b/app/controllers/homework_commons_controller.rb
@@ -207,12 +207,11 @@ class HomeworkCommonsController < ApplicationController
             format.xlsx{
               student_work_to_xlsx(@work_excel,@homework)
               exercise_export_name = current_user.real_name + "_" + @course.name + "_" + @homework.name + "_" + Time.now.strftime('%Y%m%d_%H%M%S')
-
-              render xlsx: "#{exercise_export_name.encode(Encoding.default_external,"UTF-8", :invalid => :replace, :undef => :replace, :replace => " ").strip.first(30)}",template: "homework_commons/works_list.xlsx.axlsx",locals:
+              response.set_header("Content-Disposition","attachment; filename=#{exercise_export_name.strip.first(30)}};filename*=utf-8''#{exercise_export_name.strip.first(30)}}")
+              # response.setHeader['Content-Disposition'] = "attachment; filename=\"#{exercise_export_name.strip.first(30)}\""
+              render xlsx: "#{exercise_export_name.strip.first(30)}",template: "homework_commons/works_list.xlsx.axlsx",locals:
                   {table_columns: @work_head_cells,task_users: @work_cells_column}
             }
-
-            # .encode(Encoding.default_external, 'gb2312')
           end
         end
       elsif params[:format] == "zip"
@@ -1344,7 +1343,7 @@ class HomeworkCommonsController < ApplicationController
 
   end
 
-  # 代码查重详情
+  # 代码查重代码的详情
   def code_review_detail
     @student_work = @homework.student_works.find_by(user_id: params[:user_id])
     @user = @student_work.user