无法加载此类文件 – 1.9 / bcrypt_ext（LoadError）
嘿，当我尝试启动rails服务器时，我得到以下错误
有任何想法吗？ 目前还没有可行的解决方案……
顺便说一句，我运行Windows 8 ……可能是问题所在：D
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `require': cannot load such file -- 1.9/bcry pt_ext (LoadError) from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `block in require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:236:in `load_dependency' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bcrypt-ruby-3.1.0-x86-mingw32/lib/bcrypt_ext.rb:2:in `' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `block in require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:236:in `load_dependency' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bcrypt-ruby-3.1.0-x86-mingw32/lib/bcrypt.rb:12:in `' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.3.4/lib/bundler/runtime.rb:72:in `require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.3.4/lib/bundler/runtime.rb:72:in `block (2 levels) in require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.3.4/lib/bundler/runtime.rb:70:in `each' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.3.4/lib/bundler/runtime.rb:70:in `block in require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.3.4/lib/bundler/runtime.rb:59:in `each' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.3.4/lib/bundler/runtime.rb:59:in `require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.3.4/lib/bundler.rb:132:in `require' from C:/Users/Enno/RubymineProjects/BookWriting2.0/config/application.rb:13:in `' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.11/lib/rails/commands.rb:24:in `require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.11/lib/rails/commands.rb:24:in `' from script/rails:6:in `require' from script/rails:6:in `' 今天早上，我也面临同样的问题（Windows 7）。 让我建议看看这里https://github.com/codahale/bcrypt-ruby/issues/72
我成功解决了这个问题（更新我的Gemfile）：
gem 'bcrypt-ruby', '3.1.1.rc1', :require => 'bcrypt'
如果您对gem bcrypt有问题，请按照下列步骤操作：
1.更改为bundle show bcrypt + ext\mri\找到的gem目录，例如： c:\RailsInstaller\Ruby2.2.3\lib\ruby\gems\2.2.0\gems\bcrypt-3.1.10-x86-mingw32\ext\mri
2.运行ruby extconf.rb
3.运行make
4. make install
请注意，只有正确设置了DevKit环境（运行devkitvars.bat ）， devkitvars.bat 。
我遇到了类似的问题，但在Windows上使用Ruby 2.0和Rails 3.2.15。 它现在至少需要3.1.2：
gem 'bcrypt-ruby', '~> 3.1.2'
链接： https ： //github.com/rails/rails/pull/12325
在你的gemfile中评论“gem’bcrypt-ruby’，’〜> 3.0.0’”，这应该是有用的
相关版本将不断变化。 你可以在这里找到最新的稳定版本号：rubygems.org/gems/bcrypt-ruby
如果有人在Windows 64位上仍然遇到此问题（特别是使用设计），请尝试安装Ruby 64位，然后将rails作为gem（而不是使用rails安装程序），然后添加： gem 'bcrypt-ruby', '~> 3.0.0', :require => "bcrypt"
您可能需要将tzinfo-data gem更改为： gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw]