老师打包下载增加异常捕获

app/controllers/zipdown_controller.rb

@@ -31,7 +31,8 @@ class ZipdownController < ApplicationController
     end
     send_file zipfile, :filename => obj.name+".zip", :type => detect_content_type(zipfile) if zipfile
 
-  #rescue NameError, ActiveRecord::RecordNotFound => e
+  rescue Exception => e
+    render file: 'public/no_file_found.html' , :layout => 'course_base'
     #logger.error "[ZipDown] ===> #{e}"
     #@error = e
   end