我正在学习Paperclip：在Rails中附加文件 链接 http://rdoc.info/gems/paperclip/2.3.11/file/README.md
我将这些代码放在show.html.erb上显示图片
<%= image_tag @user.photo.url %>
<%= image_tag @user.photo.url(:thumb) %>
在新页面上，我从计算机浏览文件（.png），然后单击“创建”。 然后我收到了错误
我们很抱歉，但出了点问题。
当我查看development.log时。我发现了这些错误
Status: 500 Internal Server Error
The system cannot find the path specified
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/utils.rb:486:in
`initialize'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/utils.rb:486:in
`new'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/utils.rb:486:in
`parse_multipart'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/utils.rb:471:in
`loop'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/utils.rb:471:in
`parse_multipart'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/request.rb:268:in
`parse_multipart'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/request.rb:146:in
`POST'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/methodoverride.rb:15:in
`call'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/params_parser.rb:15:in
`call'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/session/cookie_store.rb:99:in
`call'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/failsafe.rb:26:in
`call'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/lock.rb:11:in
`call'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/dispatcher.rb:114:in
`call'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/reloader.rb:34:in
`run'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/dispatcher.rb:108:in
`call'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rails-2.3.8/lib/rails/rack/static.rb:31:in
`call'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/urlmap.rb:49:in
`call'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/urlmap.rb:41:in
`each'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/urlmap.rb:41:in
`call'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rails-2.3.8/lib/rails/rack/log_tailer.rb:17:in
`call'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/content_length.rb:13:in
`call'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/chunked.rb:15:in
`call'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/handler/mongrel.rb:67:in
`process'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/mongrel-1.1.5-java/lib/mongrel.rb:159:in
`process_client'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/mongrel-1.1.5-java/lib/mongrel.rb:158:in
`each'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/mongrel-1.1.5-java/lib/mongrel.rb:158:in
`process_client'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/mongrel-1.1.5-java/lib/mongrel.rb:285:in
`run'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/mongrel-1.1.5-java/lib/mongrel.rb:285:in
`initialize'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/mongrel-1.1.5-java/lib/mongrel.rb:285:in
`new'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/mongrel-1.1.5-java/lib/mongrel.rb:285:in
`run'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/mongrel-1.1.5-java/lib/mongrel.rb:268:in
`initialize'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/mongrel-1.1.5-java/lib/mongrel.rb:268:in
`new'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/mongrel-1.1.5-java/lib/mongrel.rb:268:in
`run'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/handler/mongrel.rb:38:in
`run'
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rails-2.3.8/lib/commands/server.rb:111
C:/jruby/jruby-1.5.0/lib/ruby/gems/1.8/gems/rails-2.3.8/lib/commands/server.rb:31:in
`require'
C:/jruby/jruby-1.5.0/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require'
./script/server:3
./script/server:2:in `load'
-e:2
如何解决这个问题？请帮忙！
答案 0 :(得分：0)
这可能是因为不存在临时目录（在linux上是/ tmp），或者运行该应用程序的用户没有读取/写入权限。