diff --git a/app/controllers/homework_commons_controller.rb b/app/controllers/homework_commons_controller.rb
index 545fbce85..3562be4f3 100644
--- a/app/controllers/homework_commons_controller.rb
+++ b/app/controllers/homework_commons_controller.rb
@@ -10,7 +10,8 @@ class HomeworkCommonsController < ApplicationController
                                      :create_subject_homework, :multi_destroy, :add_to_homework_bank]
   before_action :find_homework, only: [:edit, :show, :update, :group_list, :homework_code_repeat, :code_review_results,
                                        :code_review_detail, :show_comment, :settings, :works_list, :update_settings,
-                                       :reference_answer, :publish_groups, :end_groups, :alter_name, :update_explanation]
+                                       :reference_answer, :publish_groups, :end_groups, :alter_name, :update_explanation,
+                                       :update_score, :update_student_score]
   before_action :user_course_identity
   before_action :homework_publish, only: [:show, :works_list, :code_review_results, :show_comment, :settings, :reference_answer, :update_student_score]
   before_action :teacher_allowed, only: [:new, :edit, :create, :update, :shixuns, :subjects, :create_shixun_homework,
diff --git a/app/templates/exercise_export/exercise_user.html.erb b/app/templates/exercise_export/exercise_user.html.erb
index bb3723373..41f8d5726 100644
--- a/app/templates/exercise_export/exercise_user.html.erb
+++ b/app/templates/exercise_export/exercise_user.html.erb
@@ -222,13 +222,13 @@
                   <% end %>
                   <p class="pbt10 flex-nowrap">
                     <span class="pull-left line-34">答案（填空<%= index+1 %>）：</span>
-                    <span class="null-answer"><%= to_markdown(check_answer) %></span>
+                    <span class="null-answer"><%= to_markdown(check_answer,@request_url) %></span>
                   </p>
                 <% end %>
               <% elsif q_type == 4 %>
                 <% check_answer = (user_answer.present?  ? user_answer.first.answer_text : '--') %>
                 <p class="flex-nowrap">
-                  <span class="null-answer main-height"><%= to_markdown(check_answer) %></span>
+                  <span class="null-answer main-height"><%= to_markdown(check_answer,@request_url) %></span>
                 </p>
               <% else %>
                 <div class="mbt10">