diff --git a/app/controllers/exercise_answers_controller.rb b/app/controllers/exercise_answers_controller.rb
index babdd50f7..3fc27c8f2 100644
--- a/app/controllers/exercise_answers_controller.rb
+++ b/app/controllers/exercise_answers_controller.rb
@@ -8,7 +8,7 @@ class ExerciseAnswersController < ApplicationController
       begin
         q_type = @exercise_question.question_type  #试卷的类型
         choice_id = params[:exercise_choice_id].present? ? params[:exercise_choice_id] : ""
-        answer_text = params[:answer_text].present? ? params[:answer_text] : ""  #为字符串
+        answer_text = params[:answer_text].present? ? params[:answer_text].strip : ""  #为字符串
         if q_type < Exercise::SUBJECTIVE && (q_type != Exercise::MULTIPLE) && choice_id.blank?
           normal_status(-1,"请选择序号")
         else
diff --git a/app/controllers/exercise_questions_controller.rb b/app/controllers/exercise_questions_controller.rb
index 58f3a7e71..4ce18b59d 100644
--- a/app/controllers/exercise_questions_controller.rb
+++ b/app/controllers/exercise_questions_controller.rb
@@ -361,7 +361,6 @@ class ExerciseQuestionsController < ApplicationController
           if ex_users_committed.size > 0
             ex_users_committed.each do |ex_user|
               update_objective_score = update_single_score(@exercise_question,ex_user.user_id,standard_answer)
-              Rails.logger.info("#####_________update_objective_score___________##############{update_objective_score}")
               if update_objective_score != 0
                 objective_score = ex_user.objective_score
                 new_objective_score = objective_score + update_objective_score
@@ -369,9 +368,6 @@ class ExerciseQuestionsController < ApplicationController
                 total_score = total_score < 0.0 ? 0.0 : total_score
                 ex_user.update_attributes(objective_score:new_objective_score,score:total_score)
               end
-              Rails.logger.info("#####_________ex_user.score___________##############{ex_user.score}")
-              # user = ex_user.user
-              # objective_score = calculate_student_score(@exercise,user)[:total_score]
             end
           end
           normal_status(0,"试卷更新成功,因标准答案修改,需重新计算学生成绩!")
diff --git a/app/helpers/exercises_helper.rb b/app/helpers/exercises_helper.rb
index d4ecf6d1a..7994e2c6a 100644
--- a/app/helpers/exercises_helper.rb
+++ b/app/helpers/exercises_helper.rb
@@ -438,8 +438,8 @@ module ExercisesHelper
             end
             if q.is_ordered
               answers_content.each do |u|
-                i_standard_answer = standard_answer_array.where(exercise_choice_id:u.exercise_choice_id).pluck(:answer_text).reject(&:blank?).map!(&:downcase)   #该选项的全部标准答案
-                if i_standard_answer.include?(u.answer_text.downcase)  #该空的标准答案包含用户的答案才有分数
+                i_standard_answer = standard_answer_array.where(exercise_choice_id:u.exercise_choice_id).pluck(:answer_text).reject(&:blank?).map{|a| a.strip.downcase}   #该选项的全部标准答案
+                if i_standard_answer.include?(u.answer_text.strip.downcase)  #该空的标准答案包含用户的答案才有分数
                   u.update_column('score',q_score_2)
                   score2 = score2 + q_score_2
                 else
@@ -448,9 +448,9 @@ module ExercisesHelper
                 end
               end
             else
-              st_answer_text = standard_answer_array.pluck(:answer_text).reject(&:blank?).map!(&:downcase)
+              st_answer_text = standard_answer_array.pluck(:answer_text).reject(&:blank?).map{|a| a.strip.downcase}
               answers_content.each do |u|
-                u_answer_text = u.answer_text.downcase
+                u_answer_text = u.answer_text.strip.downcase
                 if st_answer_text.include?(u_answer_text)   #只要标准答案包含用户的答案，就有分数。同时，下一次循环时，就会删除该标准答案。防止用户的相同答案获分
                   u.update_column("score",q_score_2)
                   score2 = score2 + q_score_2
@@ -582,8 +582,8 @@ module ExercisesHelper
                 i_standard_answer += a[:answer_text]
               end
             end
-            i_standard_answer = i_standard_answer.map(&:downcase)
-            if i_standard_answer.include?(u.answer_text.downcase)  #该空的标准答案包含用户的答案才有分数
+            i_standard_answer = i_standard_answer.map{|a| a.strip.downcase}
+            if i_standard_answer.include?(u.answer_text.strip.downcase)  #该空的标准答案包含用户的答案才有分数
               u.update_column('score',q_score_2)
               score1 = score1 + q_score_2
             else
@@ -592,7 +592,7 @@ module ExercisesHelper
             end
           end
         else
-          st_answer_text = standard_answer.pluck(:answer_text).sum.map(&:downcase)
+          st_answer_text = standard_answer.pluck(:answer_text).sum.map{|a| a.strip.downcase}
           answers_content.each do |u|
             u_answer_text = u.answer_text.downcase
             if st_answer_text.include?(u_answer_text)   #只要标准答案包含用户的答案，就有分数。同时，下一次循环时，就会删除该标准答案。防止用户的相同答案获分
diff --git a/db/migrate/20190822022306_add_exercise_user_update.rb b/db/migrate/20190822022306_add_exercise_user_update.rb
index 059553306..f45e6a8ee 100644
--- a/db/migrate/20190822022306_add_exercise_user_update.rb
+++ b/db/migrate/20190822022306_add_exercise_user_update.rb
@@ -1,6 +1,7 @@
 class AddExerciseUserUpdate < ActiveRecord::Migration[5.2]
   include ExercisesHelper
   def change
+    #2019,8,22添加
     exs = Exercise.all.is_exercise_published.where("publish_time > ?",(Time.now - 2.months)).includes(:exercise_questions,:exercise_users)
     exs.each do |ex|
       ex_users = ex.exercise_users.exercise_user_committed.where("end_at is not null and end_at > ?",(Time.now - 2.months))