为什么jruby创业板有奇怪的文件夹结构？

Question

据我所知，创业板的文件夹构造器应该有一个名为lib的文件夹，而该文件夹中有一个<gem-name>.rb文件。但是，当我使用JRuby1.6.8并执行bundle install安装jruby时，我打开了C:\jruby-1.6.8\lib\ruby\gems\1.8\gems\jruby-openssl-0.8.2，没有看到一个rb文件，而是看到了更多的子文件夹，如下所示：

jruby-openssl-0.8.2\
+---lib\
|   +---1.8\
|   |   +---openssl\
|   |   +---openssl.rb
|   +---1.9\
|   |   +---openssl\
|   |   +---openssl.rb
|   +---ruby\
|   |   +---shared\
|   +---shared\
|       +---jopenssl\
|       +---openssl\
|       +---openssl.rb
+---test\
    +---java\

jruby没有遵循标准的gem文件夹结构是有原因的吗？具体来说，我似乎在使用gem 'jruby-openssl'命令时遇到了问题。如果jruby文件夹在jruby文件夹中，那么gem命令应该找到并正确加载LOAD_PATH吗？

错误详细信息：

以下是C:\apachetomcat632\logs\MyWebapp.log中出现的错误

--- Backtrace
LoadError: OpenSSL::Cipher requires the jruby-openssl gem
            (root) at file:/C:/apachetomcat632/shared/lib/jruby-complete.jar!/META-INF/jruby.home/lib/ruby/site_ruby/shared/jruby/openssl/autoloads/cipher.rb:8
  MessageEncryptor at file:/C:/apachetomcat632/shared/lib/jruby-complete.jar!/META-INF/jruby.home/lib/ruby/site_ruby/shared/jruby/openssl/autoloads/cipher.rb:24
     ActiveSupport at file:C:/apachetomcat632/shared/lib/cfe-gems.jar!/gems/activesupport-3.2.11/lib/active_support/message_encryptor.rb:12
            (root) at file:C:/apachetomcat632/shared/lib/cfe-gems.jar!/gems/activesupport-3.2.11/lib/active_support/message_encryptor.rb:4
           require at org/jruby/RubyKernel.java:1062
           require at file:C:/apachetomcat632/shared/lib/cfe-gems.jar!/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251
   load_dependency at file:C:/apachetomcat632/shared/lib/cfe-gems.jar!/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:236
           require at file:C:/apachetomcat632/shared/lib/cfe-gems.jar!/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251
   eager_autoload! at file:C:/apachetomcat632/shared/lib/cfe-gems.jar!/gems/activesupport-3.2.11/lib/active_support/message_encryptor.rb:43
              each at org/jruby/RubyArray.java:1620
   eager_autoload! at file:C:/apachetomcat632/shared/lib/cfe-gems.jar!/gems/activesupport-3.2.11/lib/active_support/dependencies/autoload.rb:43
         Bootstrap at file:C:/apachetomcat632/shared/lib/cfe-gems.jar!/gems/railties-3.2.11/lib/rails/application/bootstrap.rb:20
     instance_exec at org/jruby/RubyKernel.java:2091
               run at file:C:/apachetomcat632/shared/lib/cfe-gems.jar!/gems/railties-3.2.11/lib/rails/initializable.rb:30
  run_initializers at file:C:/apachetomcat632/shared/lib/cfe-gems.jar!/gems/railties-3.2.11/lib/rails/initializable.rb:55
              each at org/jruby/RubyArray.java:1620
  run_initializers at file:C:/apachetomcat632/shared/lib/cfe-gems.jar!/gems/railties-3.2.11/lib/rails/initializable.rb:54
       initialize! at file:C:/apachetomcat632/shared/lib/cfe-gems.jar!/gems/railties-3.2.11/lib/rails/application.rb:136
              send at org/jruby/RubyKernel.java:2105
    method_missing at file:C:/apachetomcat632/shared/lib/cfe-gems.jar!/gems/railties-3.2.11/lib/rails/railtie/configurable.rb:30
            (root) at C:/apachetomcat632/webapps/Bank62P/WEB-INF/rails/config/environment.rb:5
           require at org/jruby/RubyKernel.java:1062
  load_environment at C:/apachetomcat632/webapps/Bank62P/WEB-INF/rails/config/environment.rb:23
  load_environment at file:/C:/apachetomcat632/shared/lib/jruby-rack.jar!/jruby/rack/rails_booter.rb:65
            (root) at <script>:1

下面是整个cipher.rb文件：

require 'rubygems'

# try to activate jruby-openssl gem for OpenSSL::SSL, raising error if gem not present
begin
  gem 'jruby-openssl'
  require 'openssl.rb'
rescue Gem::LoadError => e
  raise LoadError.new("OpenSSL::Cipher requires the jruby-openssl gem")
end

Answer 1

要添加到tadman的回答中，如果您查看gemspec (gems/1.8/specifications/jruby-openssl-0.8.2.gemspec)，您将看到以下一行：

s.require_paths = ["lib/shared"]

当您在代码中require 'openssl'时，它将加载shared dir中的一个。我相信该文件将决定是加载1.8版本还是1.9版本。

这么说..。

当我尝试使用0.8.2进行require 'openssl'时，会得到一个错误：

LoadError: no such file to load -- openssl/dummy

当我使用最新版本(0.8.8)时，效果很好。试着升级。