diff --git a/app/controllers/accounts_controller.rb b/app/controllers/accounts_controller.rb
index ae7335496..b429f3298 100644
--- a/app/controllers/accounts_controller.rb
+++ b/app/controllers/accounts_controller.rb
@@ -31,7 +31,7 @@ class AccountsController < ApplicationController
         phone = nil
         verifi_code = VerificationCode.where(email: email, code: code, code_type: 8).last
       end
-      uid_logger("start register:  verifi_code is #{verifi_code}, code is #{code}, time is #{Time.now.to_i - verifi_code.created_at.to_i}")
+      uid_logger("start register:  verifi_code is #{verifi_code}, code is #{code}, time is #{Time.now.to_i - verifi_code.try(:created_at).to_i}")
       check_code = (verifi_code.try(:code) == code.strip && (Time.now.to_i - verifi_code.created_at.to_i) <= 10*60)
       unless check_code
         tip_exception("验证码无效")
diff --git a/app/controllers/exercises_controller.rb b/app/controllers/exercises_controller.rb
index 79b22d571..09b237221 100644
--- a/app/controllers/exercises_controller.rb
+++ b/app/controllers/exercises_controller.rb
@@ -203,13 +203,13 @@ class ExercisesController < ApplicationController
         else
           @is_teacher_or = 1
           @user_exercise_answer = 3  #教师页面
-          @user_commit_counts = @exercise.exercise_users.where(commit_status:1).count   #已提交的用户数
+          @user_commit_counts = @exercise.exercise_users.where(commit_status:1).size   #已提交的用户数
         end
         @ex_status = @exercise.get_exercise_status(current_user)
 
         exercise_id_array = [@exercise.id]
-        @exercise_publish_count = get_user_permission_course(exercise_id_array,2).count   #是否存在已发布的
-        @exercise_unpublish_count = get_user_permission_course(exercise_id_array,1).count  #是否存在未发布的
+        @exercise_publish_count = get_user_permission_course(exercise_id_array,2).size   #是否存在已发布的
+        @exercise_unpublish_count = get_user_permission_course(exercise_id_array,1).size  #是否存在未发布的
 
         if (@exercise_publish_count == 0) && (@exercise_unpublish_count == 0)  #即表示没有分班
           if @ex_status == 1
@@ -1390,7 +1390,7 @@ class ExercisesController < ApplicationController
         if @paging_type == "percent"
           @question_result_hash = ques_result_all.sort_by{|s| s[:percent]}
         else
-          @question_result_hash = ques_result_all.sort_by{|s| s["#{@paging_type}"]}
+          @question_result_hash = ques_result_all.sort_by{|s| s[:"#{@paging_type}"]}
         end
 
         @exercise_questions_count = @exercise_questions.size
diff --git a/app/controllers/myshixuns_controller.rb b/app/controllers/myshixuns_controller.rb
index 276fbef32..31395def2 100644
--- a/app/controllers/myshixuns_controller.rb
+++ b/app/controllers/myshixuns_controller.rb
@@ -260,12 +260,14 @@ class MyshixunsController < ApplicationController
         # 远程版本库文件内容
         last_content = GitService.file_content(repo_path: @repo_path, path: path)["content"]
         content = params[:content]
+        Rails.logger.info("###11222333####{content}")
+        Rails.logger.info("###222333####{last_content}")
 
         if content != last_content
           @content_modified = 1
 
           author_name = current_user.real_name
-          author_email = current_user.mail
+          author_email = current_user.git_mail
           message = params[:evaluate] == 0 ? "System automatically submitted" : "User submitted"
           uid_logger("112233#{author_name}")
           uid_logger("112233#{author_email}")
diff --git a/app/controllers/shixuns_controller.rb b/app/controllers/shixuns_controller.rb
index 019b690b5..8f6dd23a4 100644
--- a/app/controllers/shixuns_controller.rb
+++ b/app/controllers/shixuns_controller.rb
@@ -652,7 +652,7 @@ class ShixunsController < ApplicationController
 	def update_file
 		content = params[:content]
 		author_name = current_user.full_name
-		author_email = current_user.mail
+		author_email = current_user.git_mail
 		@content = update_file_content content, @repo_path, @path, author_email, author_name, "Edit by browser"
   end
 
diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index cdd647ebd..4c3a449e9 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -30,8 +30,9 @@ module ApplicationHelper
   end
 
   # git用户
+  # git用户命名规则：login+"@educoder.net"
   def git_username(email)
-    User.find_by_mail(email)
+    User.find_by_mail(email) || User.find_by_login(email.split("@").first)
   end
 
   # 不同的类型扩展不同的目录
diff --git a/app/helpers/exercises_helper.rb b/app/helpers/exercises_helper.rb
index 7d50d1a66..6eb798d9a 100644
--- a/app/helpers/exercises_helper.rb
+++ b/app/helpers/exercises_helper.rb
@@ -86,10 +86,10 @@ module ExercisesHelper
   #试卷的统计结果页面计算各题的
   def exercise_commit_result(questions,user_ids)
     question_infos = []
+    percent = 0.0
     questions.each do |ex|
       ex_total_score = user_ids.count * ex&.question_score   #该试卷的已回答的总分
       ex_answers = ex.exercise_answers
-
       if ex.question_type != Exercise::PRACTICAL
         ques_title = ex.question_title
         ques_less_title = nil
@@ -103,19 +103,29 @@ module ExercisesHelper
       effictive_users_count = effictive_users.size #有效回答数，可能有重复的用户id，这里仅统计是否回答这个问题的全部人数
       ex_answered_scores = effictive_users.score_reviewed.pluck(:score).sum  #该问题的全部得分
 
-      if ex_total_score == 0.0
-        percent = 0.0
-      else
-        percent = (ex_answered_scores / ex_total_score.to_f).round(3) * 100  #正确率
+      if ex.question_type > Exercise::COMPLETION  #当为主观题和实训题时，
+        if ex_total_score != 0.0
+          percent = (ex_answered_scores / ex_total_score.to_f).round(3) * 100  #正确率
+        end
       end
 
       question_answer_infos = []
-      if ex.question_type <= Exercise::JUDGMENT  #单选题
-        standard_answer = ex.exercise_standard_answers.pluck(:exercise_choice_id)   #标准答案的位置
+      if ex.question_type <= Exercise::JUDGMENT  #选择题和判断题
+        standard_answer = ex.exercise_standard_answers.pluck(:exercise_choice_id).sort   #标准答案的位置
+        right_users_count = 0  #该问题的回答正确的人数
+
+        #计算每个问题的答案人数
+        user_ids.each do |user_id|
+          answer_choice_array = effictive_users.where(user_id:user_id)&.map {|s| s.exercise_choice.choice_position}.uniq
+          if answer_choice_array.sort == standard_answer
+            right_users_count += 1
+          end
+        end
+        percent = effictive_users_count > 0 ? (right_users_count / effictive_users_count.to_f).round(3)*100 : 0.0
         ex.exercise_choices.each do |c|
           right_answer = standard_answer.include?(c.choice_position)   #选项的标准答案为选项的位置
           answer_this_choice = effictive_users.search_exercise_answer("exercise_choice_id",c.id)
-          answer_users_count = answer_this_choice.count
+          answer_users_count = answer_this_choice.size
           if effictive_users_count == 0
             answer_percent = 0.0
           else
@@ -125,7 +135,7 @@ module ExercisesHelper
               :choice_position => c.choice_position,
               :choice_text => c.choice_text,
               :choice_users_count => answer_users_count,
-              :choice_percent => answer_percent.round(1),
+              :choice_percent => answer_percent.round(1).to_s,
               :right_answer => right_answer
           }
           question_answer_infos.push(answer_option)
@@ -156,18 +166,18 @@ module ExercisesHelper
           else
             answer_percent = (user_count / effictive_users_count.to_f ).round(3)
           end
-
           answer_option = {
               :choice_position => index+1,
               :choice_text => s_choice_text,
               :choice_users_count => user_count,
-              :choice_percent => answer_percent.round(1),
+              :choice_percent => answer_percent.round(1).to_s,
               :right_answer => true
           }
           question_answer_infos.push(answer_option)
           all_user_count += user_count
           standard_answer_count += 1
         end
+        percent = effictive_users_count > 0 ? (all_user_count / effictive_users_count.to_f).round(3)*100 : 0.0
         user_wrong_count = (effictive_users_count - all_user_count )
 
         if effictive_users_count > 0 && user_wrong_count >= 0
@@ -179,21 +189,19 @@ module ExercisesHelper
             :choice_position => (standard_answer_count + 1),
             :choice_text => "wrong",
             :choice_users_count => user_wrong_count,
-            :choice_percent => wrong_percent.round(1),
+            :choice_percent => wrong_percent.round(1).to_s,
             :right_answer => false
         }
         question_answer_infos.push(wrong_answer_position)
       elsif ex.question_type == Exercise::SUBJECTIVE  #主观题
         ex_score = ex&.question_score
-        full_scores = effictive_users.search_exercise_answer("score",ex_score).count  #满分人数
-        no_full_scores = effictive_users.exercise_no_full_scores(ex_score).count  #部分分数人数
-        zero_scores = effictive_users.search_exercise_answer("score",0.0).count  #包含为0分的，及未评阅的
-        # review_scores = ex.exercise_answer_comments.count  #主观题的评阅数量
+        full_scores = effictive_users.search_exercise_answer("score",ex_score).size  #满分人数
+        no_full_scores = effictive_users.exercise_no_full_scores(ex_score).size  #部分分数人数
+        zero_scores = effictive_users.search_exercise_answer("score",0.0).size  #包含为0分的，及未评阅的
         un_review_scores = effictive_users_count - full_scores - no_full_scores - zero_scores   #未评阅数
         if un_review_scores < 0
           un_review_scores = 0
         end
-        # zero_scores = all_zero_scores - un_review_scores  #已评阅，且答案未0分的人数
         main_scores_array = [full_scores,no_full_scores,zero_scores,un_review_scores]
         main_scores_array.each_with_index do |s,index|
           right_answer = (index == 0)
@@ -207,7 +215,7 @@ module ExercisesHelper
               :choice_position => index+1,
               :choice_text => index+1,
               :choice_users_count => s,
-              :choice_percent => score_percent.round(1),
+              :choice_percent => score_percent.round(1).to_s,
               :right_answer => right_answer
           }
           question_answer_infos.push(answer_option)
@@ -220,13 +228,13 @@ module ExercisesHelper
           full_scores = cha_shixun_answer.search_shixun_keys("score",cha_score).size  #满分人数
           no_full_scores = cha_shixun_answer.shixun_no_full_scores(cha_score).size  #部分分数人数c
           all_zero_scores = cha_shixun_answer.search_shixun_keys("score",0.0).size  #零分人数
-          shiun_scores = user_ids.count * cha_score
+          shixun_scores = user_ids.count * cha_score
           shixun_answered_scores = cha_shixun_answer.score_reviewed.pluck(:score).sum  #该问题的全部得分
 
           if shixun_answered_scores == 0.0
             game_percent = 0.0
           else
-            game_percent = (shixun_answered_scores / shiun_scores.to_f).round(3) * 100  #正确率
+            game_percent = (shixun_answered_scores / shixun_scores.to_f).round(3) * 100  #正确率
           end
 
           shixun_score_array = [full_scores,no_full_scores,all_zero_scores]
@@ -242,7 +250,7 @@ module ExercisesHelper
                 :choice_position => index+1,
                 :choice_text => index+1,
                 :choice_users_count => s,
-                :choice_percent => score_percent.round(1),
+                :choice_percent => score_percent.round(1).to_s,
                 :right_answer => right_answer
             }
             shixun_chas.push(answer_option)
@@ -252,7 +260,7 @@ module ExercisesHelper
               :cha_name => c.challenge.subject,
               :cha_position => c.position,
               :cha_details => shixun_chas,
-              :cha_percent => game_percent
+              :cha_percent => game_percent.round(1).to_s
           }
           question_answer_infos.push(shixun_new_chas)
         end
@@ -402,7 +410,7 @@ module ExercisesHelper
             user_answer_content = answer_choice_array.sort
             standard_answer = q.exercise_standard_answers.pluck(:exercise_choice_id).sort  #该问题的标准答案，可能有多个
             if user_answer_content == standard_answer  #答案一致,多选或单选才给分，答案不对不给分
-              if standard_answer.count > 0
+              if standard_answer.size > 0
                 q_score_1 = q.question_score
                 # q_score_1 = (q.question_score.to_f / standard_answer.count)   #当多选答案正确时，每个answer的分数均摊。
               else
diff --git a/app/models/exercise.rb b/app/models/exercise.rb
index e7d141ea9..a46fded25 100644
--- a/app/models/exercise.rb
+++ b/app/models/exercise.rb
@@ -178,13 +178,12 @@ class Exercise < ApplicationRecord
     ex_answer_user = exercise_users.where(user_id: user.id).select(:start_at,:end_at,:commit_status)
     user_ex_status = get_exercise_status(user)
     user_status = 2
-    if ex_answer_user.exists? && (ex_answer_user.first&.start_at.present? || ex_answer_user.first&.end_at.present?)   #学生有过答题的,或者立即截止，但学生未做试卷的
+    if ex_answer_user.present? && (ex_answer_user.first&.start_at.present? || ex_answer_user.first&.end_at.present?)   #学生有过答题的,或者立即截止，但学生未做试卷的
       user_status = ex_answer_user.first.commit_status
     end
-    if ex_answer_user.exists? && ex_answer_user.first&.start_at.blank? && user_ex_status == 3
+    if ex_answer_user.present? && ex_answer_user.first&.start_at.blank? && user_ex_status == 3
       user_status = 4
     end
-
     user_status
   end
 
diff --git a/app/models/user.rb b/app/models/user.rb
index 26f0fa544..89918551e 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -156,6 +156,9 @@ class User < ApplicationRecord
     Token.where(:user_id => id, :action => 'session', :value => value).delete_all
   end
 
+  def git_mail
+    mail || "#{login}@educoder.net"
+  end
 
   # 学号
   def student_id