diff --git a/Gemfile b/Gemfile
index 98d81ca70..679e0a5b2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,7 +6,7 @@ unless RUBY_PLATFORM =~ /w32/
   gem 'iconv'
 end
 
-gem 'zipruby', '~> 0.3.6' #performance
+gem 'rubyzip'
 gem 'delayed_job_active_record'#, :group => :production
 gem 'daemons'
 gem 'grape', '~> 0.9.0'
diff --git a/app/controllers/zipdown_controller.rb b/app/controllers/zipdown_controller.rb
index 80e7c1c06..a3bee3c95 100644
--- a/app/controllers/zipdown_controller.rb
+++ b/app/controllers/zipdown_controller.rb
@@ -1,10 +1,11 @@
+require 'zip'
 class ZipdownController < ApplicationController
   #查找项目（课程）
   before_filter :find_project_by_bid_id, :only => [:assort]
   #检查权限
   #勿删 before_filter :authorize, :only => [:assort,:download_user_homework]
   SAVE_FOLDER = "#{Rails.root}/files"
-  OUTPUT_FOLDER = "#{Rails.root}/tmp/archiveZip"
+  OUTPUT_FOLDER = "#{Rails.root}/files/archiveZip"
 
   #统一下载功能
   def download
@@ -181,23 +182,19 @@ class ZipdownController < ApplicationController
     zipfile_name = "#{output_path}/#{rename_zipfile}"
 
     Dir.mkdir(File.dirname(zipfile_name)) unless File.exist?(File.dirname(zipfile_name))
-    Zip::Archive.open(zipfile_name, Zip::CREATE) do |zipfile|
+    Zip::File.open(zipfile_name, Zip::File::CREATE) do |zipfile|
       files_paths.each do |filename|
-        flag = true
-        index = 1
         rename_file = File.basename(filename)
         rename_file = filename_to_real( File.basename(filename)) if is_attachment
-
         begin
-          zipfile.add_file(rename_file, filename)
-          flag = false
+          zipfile.add(rename_file, filename)
         rescue Exception => e
-          zipfile.add_buffer('FILE_NOTICE.txt', l(:label_file_exist))
+          zipfile.get_output_stream('FILE_NOTICE.txt'){|os| os.write l(:label_file_exist)}
           next
         end
       end
       unless not_exist_file.empty?
-        zipfile.add_buffer('FILE_LOST.txt', l(:label_file_lost) + not_exist_file.join(',').to_s)
+        zipfile.get_output_stream('FILE_LOST.txt'){|os| os.write l(:label_file_lost) + not_exist_file.join(',').to_s}
       end
     end
     zipfile_name