Ruby on Rails Mongrel错误

Question

当我单击“欢迎”页面上的“关于您的应用程序的环境”按钮时，这将在我的服务器控制台中发生。

** Starting Mongrel listening at 0.0.0.0:3000
** Starting Rails with development environment...
** Rails loaded.
** Loading any Rails specific GemPlugins
** Signals ready.  INT => stop (no restart).
** Mongrel 1.1.5 available at 0.0.0.0:3000
** Use CTRL-C to stop.
Sat Jul 17 02:24:28 -0400 2010: Error calling Dispatcher.dispatch #<NoMethodErro
r: You have a nil object when you didn't expect it!
You might have expected an instance of Array.
The error occurred while evaluating nil.split>
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controll
er/cgi_process.rb:52:in `dispatch_cgi'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controll
er/dispatcher.rb:101:in `dispatch_cgi'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controll
er/dispatcher.rb:27:in `dispatch'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/../
lib/mongrel/rails.rb:76:in `process'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/../
lib/mongrel/rails.rb:74:in `synchronize'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/../
lib/mongrel/rails.rb:74:in `process'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/../
lib/mongrel.rb:159:in `process_client'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/../
lib/mongrel.rb:158:in `each'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/../
lib/mongrel.rb:158:in `process_client'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/../
lib/mongrel.rb:285:in `run'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/../
lib/mongrel.rb:285:in `initialize'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/../
lib/mongrel.rb:285:in `new'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/../
lib/mongrel.rb:285:in `run'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/../
lib/mongrel.rb:268:in `initialize'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/../
lib/mongrel.rb:268:in `new'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/../
lib/mongrel.rb:268:in `run'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/../
lib/mongrel/configurator.rb:282:in `run'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/../
lib/mongrel/configurator.rb:281:in `each'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/../
lib/mongrel/configurator.rb:281:in `run'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/mon
grel_rails:128:in `run'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/../
lib/mongrel/command.rb:212:in `run'
C:/INSTAN~1.0-W/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mswin32-60/bin/mon
grel_rails:281
C:/INSTAN~1.0-W/ruby/bin/mongrel_rails:19:in `load'
C:/INSTAN~1.0-W/ruby/bin/mongrel_rails:19

以下是版本

C:\InstantRails-2.0-win\rails_apps>rails -v
Rails 2.3.8

C:\InstantRails-2.0-win\rails_apps>ruby -v
ruby 1.8.6 (2007-09-24 patchlevel 111) [i386-mswin32]

C:\InstantRails-2.0-win\rails_apps>gem -v
1.3.7

C:\InstantRails-2.0-win\rails_apps>gem install mongrel
Successfully installed mongrel-1.1.5-x86-mswin32-60
1 gem installed
Installing ri documentation for mongrel-1.1.5-x86-mswin32-60...
Installing RDoc documentation for mongrel-1.1.5-x86-mswin32-60...

Answer 1

我不能重现(我在这里使用的是Ruby1.9.1 mingw32 )，但是cgi_process.rb的52行调用

if headers.include?('Set-Cookie')
  headers['cookie'] = headers.delete('Set-Cookie').split("\n")
end

也许可以尝试在environment.rb中检查您的会话密钥和cookie设置，并尝试运行ruby script/server webrick (而不是mongrel)，看看这是否是问题所在。

我也知道，如果你没有在database.yml中创建或设置数据库，“关于你的应用程序”链接就会爆炸，所以也要检查一下。

Answer 2

这个问题在on the Rails bugtracker上有很长的讨论。最终的解决方案似乎是“与时俱进”，并迁移到Rails 3.x，但对于我们中那些还不能做到的人来说，有一个变通办法。

您可以将此配置下载到您的mongrel.rb /initializers目录中。这似乎可以加载页面，但资源(样式表、javascript)似乎没有加载。我正在进一步研究，但我想把它作为一个正确方向的快速指针抛出。

当我了解到更多信息时，我会更新这个答案。