第一次运行导轨服务器时出错

我刚开始学习导轨，目前我正在通过Lynda课程学习Ruby on Rails 3基本训练与Kevin Skoglund。在我已经达到的时候，我们正在尝试构建我们的第一个Web应用程序，并且我们被指示通过输入rails server来创建我们的服务器，正如您所看到的那样。当我输入时，整个加载错误出现混乱，我不知道如何解决它。第一次运行导轨服务器时出错

C:\Users\Bryan\Documents\Sites\simple_cms>rails s 
C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/nokogiri-1.6.6.2-x64-mingw32/lib/nokogiri.rb:29:in `require': cannot load such file -- nokogiri/nokogiri (LoadError) 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/nokogiri-1.6.6.2-x64-mingw32/lib/nokogiri.rb:29:in `rescue in <top (required)>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/nokogiri-1.6.6.2-x64-mingw32/lib/nokogiri.rb:25:in `<top (required)>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/loofah-2.0.3/lib/loofah.rb:3:in `require' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/loofah-2.0.3/lib/loofah.rb:3:in `<top (required)>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rails-html-sanitizer-1.0.2/lib/rails-html-sanitizer.rb:2:in `require' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rails-html-sanitizer-1.0.2/lib/rails-html-sanitizer.rb:2:in `<top (required)>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_view/helpers/sanitize_helper.rb:3:in `require' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_view/helpers/sanitize_helper.rb:3:in `<top (required)>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_view/helpers/text_helper.rb:32:in `<module:TextHelper>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_view/helpers/text_helper.rb:29:in `<module:Helpers>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_view/helpers/text_helper.rb:6:in `<module:ActionView>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_view/helpers/text_helper.rb:4:in `<top (required)>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_view/helpers/form_tag_helper.rb:18:in `<module:FormTagHelper>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_view/helpers/form_tag_helper.rb:14:in `<module:Helpers>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_view/helpers/form_tag_helper.rb:8:in `<module:ActionView>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_view/helpers/form_tag_helper.rb:6:in `<top (required)>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_view/helpers/form_helper.rb:4:in `require' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_view/helpers/form_helper.rb:4:in `<top (required)>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_view/helpers.rb:50:in `<module:Helpers>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_view/helpers.rb:4:in `<module:ActionView>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_view/helpers.rb:3:in `<top (required)>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sprockets/rails/legacy_asset_tag_helper.rb:7:in `<module:LegacyAssetTagHelper>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sprockets/rails/legacy_asset_tag_helper.rb:6:in `<module:Rails>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sprockets/rails/legacy_asset_tag_helper.rb:4:in `<module:Sprockets>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sprockets/rails/legacy_asset_tag_helper.rb:3:in `<top (required)>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sprockets/rails/helper.rb:45:in `require' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sprockets/rails/helper.rb:45:in `<module:Helper>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sprockets/rails/helper.rb:7:in `<module:Rails>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sprockets/rails/helper.rb:6:in `<module:Sprockets>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sprockets/rails/helper.rb:5:in `<top (required)>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sprockets/railtie.rb:6:in `require' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sprockets/railtie.rb:6:in `<top (required)>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.4/lib/sass/rails/railtie.rb:3:in `require' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.4/lib/sass/rails/railtie.rb:3:in `<top (required)>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.4/lib/sass/rails.rb:11:in `require' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.4/lib/sass/rails.rb:11:in `<top (required)>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.4/lib/sass-rails.rb:1:in `require' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.4/lib/sass-rails.rb:1:in `<top (required)>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/runtime.rb:76:in `require' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/runtime.rb:76:in `block (2 levels) in require' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/runtime.rb:72:in `each' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/runtime.rb:72:in `block in require' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/runtime.rb:61:in `each' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/runtime.rb:61:in `require' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler.rb:134:in `require' 
    from C:/Users/Bryan/Documents/Sites/simple_cms/config/application.rb:7:in `<top (required)>' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:78:in `require' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:78:in `block in server' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:75:in `tap' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:75:in `server' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:39:in `run_command!' 
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/commands.rb:17:in `<top (required)>' 
    from bin/rails:4:in `require' 
    from bin/rails:4:in `<main>' 

C:\Users\Bryan\Documents\Sites\simple_cms>

来源

2015-10-13 Bryan Ospina

看起来像nokogiri不可用。你是否在启动服务器之前运行'bundle install'？不知道让nokogiri在Windows上运行涉及什么。 –

感谢您的回复菲利普，我没有预先运行软件包安装，只是做了一遍，只是为了确保我仍然有同样的问题。 @PhilipHallstrom –

只是为了咧嘴笑，你可以尝试'捆绑exec rails服务器'？ –

确保您的Gemfile包含：

gem 'nokogiri'

然后运行命令bundle install，尝试运行rails s，如果你仍然得到同样的错误重新启动计算机以确保宝石更新。

如果问题agian您的Gemfile仍时有发生编辑和放：

gem 'nokogiri', :require => false

运行bundle install并尝试运行rails s。

编辑

只注意到你是Windows用户，并使用Ruby 2.2，其引入nokogiri没有为您的ENV尚未编制，不好意思： https://github.com/sparklemotion/nokogiri/issues/1256

尝试将红宝石降级到2.0.0。

来源

2015-10-13 19:28:26 matanco

它工作感谢你，所以我想我可以给你一个真正的权利！ –

欢迎您:-) – matanco

实际上，这似乎只是一个临时性的修复，尽快我试图在浏览器上打开Web应用程序，再次发生问题，我又回到了这里，并进一步通过编辑gem文件，运行bundle安装，然后导轨再次导致相同的问题。 –

第一次运行导轨服务器时出错

回答

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