diff --git a/app/controllers/attachments_controller.rb b/app/controllers/attachments_controller.rb
index b2364165b..f7adf802b 100644
--- a/app/controllers/attachments_controller.rb
+++ b/app/controllers/attachments_controller.rb
@@ -69,12 +69,14 @@ class AttachmentsController < ApplicationController
     if candown || User.current.admin? || User.current.id == @attachment.author_id
       @attachment.increment_download
       if stale?(:etag => @attachment.digest)
-        req = RestClient.post 'http://192.168.80.107/Any2HtmlHandler.ashx', :txtDes => File.new(@attachment.diskfile, 'rb')
-        render :text => req.body
-
-        # send_file @attachment.diskfile, :filename => filename_for_content_disposition(@attachment.filename),
-        #           :type => detect_content_type(@attachment),
-        #           :disposition => 'attachment'    #inline can open in browser
+        convered_file = File.join(Rails.root, "files", "convered_office", a.disk_filename + ".html")
+        if File.exist?(convered_file)
+          render :text => File.open(convered_file).read
+        else
+          send_file @attachment.diskfile, :filename => filename_for_content_disposition(@attachment.filename),
+            :type => detect_content_type(@attachment),
+            :disposition => 'attachment'    #inline can open in browser
+        end
       end
 
     else
diff --git a/lib/tasks/office.rake b/lib/tasks/office.rake
new file mode 100644
index 000000000..770379b1a
--- /dev/null
+++ b/lib/tasks/office.rake
@@ -0,0 +1,24 @@
+namespace :office do
+  desc "conver any files to html"
+  task :conver => :environment do
+    Attachment.find_each do |a|
+      convered_file = File.join(Rails.root, "files", "convered_office", a.disk_filename + ".html")
+      unless File.exist?(convered_file)
+        if File.exist? a.diskfile
+          if %w(doc docx ppt pptx xls xlsx pdf).any?{|word| a.diskfile.downcase.end_with?(word)}
+            begin
+              req = RestClient.post 'http://192.168.80.107/Any2HtmlHandler.ashx', :txtDes => File.new(a.diskfile, 'rb')
+              File.new(convered_file, "ab+") do |f|
+                f.write(req.body)
+              end
+            rescue =>e 
+              puts e.message
+            end
+          end
+        else
+          puts "can't find file #{a.diskfile}"
+        end
+      end
+    end
+  end
+end