fix bug

app/controllers/zips_controller.rb

@@ -20,6 +20,7 @@ class ZipsController < ApplicationController
     exercises = ExportExercisesService.new(@exercise,@ex_users)
 
     file_name = filename_for_content_disposition(exercises.filename)
+    logger.info("##################_______________________file_name_____________________############{file_name}")
     send_file exercises.ex_zip, filename: file_name, type: 'application/zip'
   rescue Exception => e
     normal_status(-1, e.message)
@@ -39,14 +40,14 @@ class ZipsController < ApplicationController
   def get_exercise
     ActiveRecord::Base.transaction do
       begin
-        @exercise = Exercise.find_by(id:params[:exercise_id])
+        @exercise = Exercise.find_by(id:params[:exercise_id]).includes(:exercise_users)
         group_id = params[:exercise_group_id]
         if @exercise.blank?
           normal_status(-1,"试卷不存在")
         else
-          @course = @exercise.course
+          @course = @exercise.course.includes(:course_members)
 
-          default_ex_users = @exercise.all_exercise_users(current_user.id).exercise_user_committed.limit 2
+          default_ex_users = @exercise.all_exercise_users(current_user.id).exercise_user_committed
           default_ex_users_size = default_ex_users.size
           @ex_users =  default_ex_users   #仅导出已提交的，截止后则是全部为提交的。
           #可以分班选择

config/initializers/pdfkit.rb

@@ -1,7 +1,8 @@
 PDFKit.configure do |config|
-  # config.wkhtmltopdf = ENV["WKHTMLTOPDF_EXEC"] || 'wkhtmltopdf'
+  config.wkhtmltopdf = ENV["WKHTMLTOPDF_EXEC"] || 'wkhtmltopdf'
-  config.wkhtmltopdf = ENV["WKHTMLTOPDF_EXEC"] || '/usr/bin/wkhtmltopdf'
+  # config.wkhtmltopdf = ENV["WKHTMLTOPDF_EXEC"] || '/usr/bin/wkhtmltopdf'
   config.default_options = {
+      encoding: "UTF-8",
       page_size: 'A4',
       print_media_type: true,
       dpi: 300,