一旦我安装了rails，然后我进入一个文件夹并键入rails new app。然后我进入文件夹并运行bundle install。一旦我安装了所有必需的gems，我进入applications文件夹，然后输入
rails s
或
rails server
，得到以下错误:
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-2.0.2/lib/loofah.rb:3
:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/loofah-2.0.2/lib/loofah.rb:3
:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rails-html-sanitizer-1.0.2/l
ib/rails-html-sanitizer.rb:2:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rails-html-sanitizer-1.0.2/l
ib/rails-html-sanitizer.rb:2:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/helpers/sanitize_helper.rb:3:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/helpers/sanitize_helper.rb:3:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/helpers/text_helper.rb:32:in `<module:TextHelper>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/helpers/text_helper.rb:29:in `<module:Helpers>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/helpers/text_helper.rb:6:in `<module:ActionView>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/helpers/text_helper.rb:4:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/helpers/form_tag_helper.rb:18:in `<module:FormTagHelper>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/helpers/form_tag_helper.rb:14:in `<module:Helpers>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/helpers/form_tag_helper.rb:8:in `<module:ActionView>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/helpers/form_tag_helper.rb:6:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/helpers/form_helper.rb:4:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/helpers/form_helper.rb:4:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/helpers.rb:50:in `<module:Helpers>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/helpers.rb:4:in `<module:ActionView>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/helpers.rb:3:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.0/lib/sp
rockets/rails/legacy_asset_tag_helper.rb:7:in `<module:LegacyAssetTagHelper>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.0/lib/sp
rockets/rails/legacy_asset_tag_helper.rb:6:in `<module:Rails>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.0/lib/sp
rockets/rails/legacy_asset_tag_helper.rb:4:in `<module:Sprockets>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.0/lib/sp
rockets/rails/legacy_asset_tag_helper.rb:3:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.0/lib/sp
rockets/rails/helper.rb:54:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.0/lib/sp
rockets/rails/helper.rb:54:in `<module:Helper>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.0/lib/sp
rockets/rails/helper.rb:7:in `<module:Rails>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.0/lib/sp
rockets/rails/helper.rb:6:in `<module:Sprockets>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.0/lib/sp
rockets/rails/helper.rb:5:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.0/lib/sp
rockets/railtie.rb:6:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.0/lib/sp
rockets/railtie.rb:6:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.3/lib/sass/ra
ils/railtie.rb:3:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.3/lib/sass/ra
ils/railtie.rb:3:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.3/lib/sass/ra
ils.rb:11:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.3/lib/sass/ra
ils.rb:11:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.3/lib/sass-ra
ils.rb:1:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.3/lib/sass-ra
ils.rb:1:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/ru
ntime.rb:76:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/ru
ntime.rb:76:in `block (2 levels) in require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/ru
ntime.rb:72:in `each'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/ru
ntime.rb:72:in `block in require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/ru
ntime.rb:61:in `each'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/ru
ntime.rb:61:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler.rb
:134:in `require'
from C:/RubyProjects/app/config/application.rb:7:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/com
mands/commands_tasks.rb:78:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/com
mands/commands_tasks.rb:78:in `block in server'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/com
mands/commands_tasks.rb:75:in `tap'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/com
mands/commands_tasks.rb:75:in `server'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/com
mands/commands_tasks.rb:39:in `run_command!'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/com
mands.rb:17:in `<top (required)>'
from bin/rails:4:in `require'
from bin/rails:4:in `<main>'
有没有人知道为什么这可能发生，我怎么能解决这个问题?
谢谢!
我可以建议你现在或直到Nokogiri发布支持windows的新版本。
解决方案1:
把你的开发平台改成linux或者Ubuntu。
解决方案2:
将ruby版本降级到2.1或更低。一旦Nokogiri发布支持windows的新版本，你就可以将ruby升级到2.2。要降级ruby版本，请使用RVM或类似的工具来维护/管理ruby版本。但是我不确定RVM是否能在Windows平台上工作，你可以参考这个stackoverflow链接。