diff --git a/app/controllers/zipdown_controller.rb b/app/controllers/zipdown_controller.rb
index 5caa97a22..b10b47aaa 100644
--- a/app/controllers/zipdown_controller.rb
+++ b/app/controllers/zipdown_controller.rb
@@ -22,20 +22,10 @@ class ZipdownController < ApplicationController
 
   #下载某一学生的作业的所有文件
   def download_user_homework
-    obj_class = params[:obj_class]
-    obj_id = params[:obj_id]
-    user_id = params[:user_id]
-    obj = obj_class.constantize.find(obj_id)
-
-    if User.current.admin? || User.current.member_of?(obj.courses.first)
-      zipfile = nil
-      case obj.class.to_s.to_sym
-        when :Bid
-          zipfile = zip_user_bid obj,user_id
-        else
-          logger.error "[ZipDown#assort] ===> #{obj.class.to_s.to_sym} unKown !!"
-      end
-      send_file zipfile, :filename => obj.name, :type => detect_content_type(zipfile) if zipfile
+    homework = HomeworkAttach.find params[:homework]
+    if homework != nil && (User.current.admin? || User.current.member_of?(homework.bid.courses.first))
+      zipfile = zip_homework_by_user homework
+      send_file zipfile, :filename => homework.name, :type => detect_content_type(zipfile) if zipfile
     else
       render_403 :message => :notice_not_authorized
     end
@@ -52,7 +42,8 @@ class ZipdownController < ApplicationController
     user_zip_paths = homeattaches.map do |homeattach|
       zip_homework_by_user homeattach
     end
-    zipping "#{Time.now.to_i}_#{bid.name}.zip", user_zip_paths, OUTPUT_FOLDER
+    #zipping "#{Time.now.to_i}_#{bid.name}.zip", user_zip_paths, OUTPUT_FOLDER
+    user_zip_paths
   end
 
   def zip_bid(bid)
@@ -84,6 +75,7 @@ class ZipdownController < ApplicationController
       homeworks_attach_path << attach.diskfile#.to_s.slice((length+1)..-1)
     end
     zipping "#{Time.now.to_i}_#{homeattach.user.name.to_s}.zip", homeworks_attach_path, OUTPUT_FOLDER, true
+    #user_attaches_paths
   end
 
 
diff --git a/app/views/bids/_homework_list.html.erb b/app/views/bids/_homework_list.html.erb
index a7d65ea43..f1fd0b7b7 100644
--- a/app/views/bids/_homework_list.html.erb
+++ b/app/views/bids/_homework_list.html.erb
@@ -49,7 +49,7 @@
                         <% end %>
                         <strong>
                           <% if is_evaluation  || is_teacher%>
-                            <%= link_to homework_filename, :controller => "zipdown", :action => "download_user_homework",:obj_class => @bid.class,:obj_id => @bid, :user_id =>homework.user%>
+                            <%= link_to homework_filename, :controller => "zipdown", :action => "download_user_homework",:homework => homework%>
                           <% else %>
                             <%= homework_filename  %>
                           <% end %>