diff --git a/app/controllers/exercises_controller.rb b/app/controllers/exercises_controller.rb
index 1a20e7406..93a243c2a 100644
--- a/app/controllers/exercises_controller.rb
+++ b/app/controllers/exercises_controller.rb
@@ -219,7 +219,6 @@ class ExercisesController < ApplicationController
           end
         end
 
-
       rescue Exception => e
         uid_logger_error(e.message)
         tip_exception("没有权限")
@@ -1206,8 +1205,6 @@ class ExercisesController < ApplicationController
             get_exercise_answers(@exercise_all_users)  # 未答和已答的
             @exercise_current_user_status = 2  #当前用户非课堂成员
             @exercise_users_list = []
-            # @exercise_unanswers = 0
-            # @exercise_answers = 0
           end
         end
 
@@ -1296,7 +1293,6 @@ class ExercisesController < ApplicationController
                 get_export_users(@exercise,@course,@export_ex_users)
                 exercise_export_name_ =
                     "#{current_user.real_name}_#{@course.name}_#{@exercise.exercise_name}_#{Time.now.strftime('%Y%m%d_%H%M%S')}"
-
                 render xlsx: "#{exercise_export_name_.strip.first(30)}",template: "exercises/exercise_lists.xlsx.axlsx",locals: {table_columns:@table_columns,exercise_users:@user_columns}
               }
             end
@@ -1314,9 +1310,9 @@ class ExercisesController < ApplicationController
   def export_exercise
     @request_url = request.base_url
     @exercise_questions = @exercise.exercise_questions.includes(:exercise_choices).order("question_number ASC")
-    filename_ = "#{@exercise.user.real_name}_#{@exercise.exercise_name}_#{Time.now.strftime('%Y%m%d_%H%M%S')}"
+    filename_ = "#{@exercise.user.real_name}_#{@course.name}__#{Time.now.strftime('%Y%m%d_%H%M%S')}"
     stylesheets = "#{Rails.root}/app/templates/exercise_export/exercise_export.css"
-    render pdf: 'exercise_export/blank_exercise', filename: filename_.strip.first(30), stylesheets: stylesheets
+    render pdf: 'exercise_export/blank_exercise', filename: filename_, stylesheets: stylesheets
   end
 
   #空白试卷预览页面,仅供测试使用，无其他任何用途
@@ -1546,12 +1542,11 @@ class ExercisesController < ApplicationController
       if exercise.present?
         if exercise.unified_setting  #统一设置只有两种情况，全部发布，全部截止
           exercise_user_status = exercise.get_exercise_status(current_user)   #当前用户的能看到的试卷
-          if exercise_user_status == exercise_status || exercise_status == 3 #未发布的情况
+          if (exercise_user_status == exercise_status) || exercise_status == 3 #未发布的情况
             unpublish_group = unpublish_group + user_groups_id
           else
             unpublish_group = []
           end
-          # unpublish_group = unpublish_group + user_groups_id
         else
           ex_all_group_settings = exercise.exercise_group_settings
           ex_group_settings = ex_all_group_settings.exercise_group_published.pluck(:course_group_id).uniq  #问卷设置的班级
@@ -1579,13 +1574,13 @@ class ExercisesController < ApplicationController
 
   def set_exercise_status(publish_time,end_time)
     time_now_i = Time.now
-    if publish_time.present? && publish_time <= time_now_i && end_time > time_now_i
+    if publish_time.present? && (publish_time <= time_now_i) && (end_time > time_now_i)
       2
     elsif publish_time.nil? || (publish_time.present? && publish_time > time_now_i)
       1
-    elsif end_time.present? && end_time <= time_now_i
+    elsif end_time.present? && (end_time <= time_now_i)
       3
-    elsif end_time.present? && publish_time.present? && end_time < publish_time
+    elsif end_time.present? && publish_time.present? && (end_time < publish_time)
         normal_status(-1,"时间设置错误！")
     else
       1
@@ -1752,6 +1747,4 @@ class ExercisesController < ApplicationController
     end
   end
 
-
-
 end
diff --git a/app/helpers/exercises_helper.rb b/app/helpers/exercises_helper.rb
index 3bc342c06..796337c8e 100644
--- a/app/helpers/exercises_helper.rb
+++ b/app/helpers/exercises_helper.rb
@@ -257,7 +257,6 @@ module ExercisesHelper
   end
 
   def exercise_index_show(exercise,course,is_teacher_or,user)
-    # exercise_all_users = exercise.exercise_users
     # lock_icon 0出现锁，1不出现锁
     ex_show_text = []
 
diff --git a/app/views/exercises/_user_exercise_info.json.jbuilder b/app/views/exercises/_user_exercise_info.json.jbuilder
index cba07fb3f..9acb18326 100644
--- a/app/views/exercises/_user_exercise_info.json.jbuilder
+++ b/app/views/exercises/_user_exercise_info.json.jbuilder
@@ -36,7 +36,7 @@ elsif student_status == 1
   json.question_status question_status
 end
 
-exercise_status = exercise.get_exercise_status(ex_answerer.id)
+exercise_status = exercise.get_exercise_status(ex_answerer)
 
 #当前为老师，或为学生，但在试卷截止后且答案选择公开的
 if is_teacher_or == 1 || (exercise_status == 3 && exercise.answer_open)