使用Ruby 1.9.3和Rubygems 1.8.15安装webrat

Question

我想结合使用webrat和Cucumber为Web应用程序编写验收测试。当我尝试安装webrat gem时，出现以下错误。我试图删除C：\ Ruby193 \ lib \ ruby​​ \ gems \ 1.9.1 \ cache *和gem update --system，但没有任何运气。

我想在Windows7环境中安装Ruby上的gem。据我可以看到问题是这样的：“在C：/Ruby193/lib/ruby/gems/1.9.1/cache/webrat-0.7.3.gem找不到元数据”

任何帮助是非常感谢，谢谢！

gem install webrat --debug 
Exception `NameError' at C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/command_manager.rb:177 - uninitialized constant Gem::Commands::InstallCommand 
Exception `Errno::EWOULDBLOCK' at C:/Ruby193/lib/ruby/1.9.1/net/protocol.rb:141 - A non-blocking socket operation could not be completed immediately. - read would block 
Exception `Errno::EWOULDBLOCK' at C:/Ruby193/lib/ruby/1.9.1/net/protocol.rb:141 - A non-blocking socket operation could not be completed immediately. - read would block 
Exception `NoMethodError' at C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1483 - undefined method `to_ary' for #<Gem::Specification name=webrat version=0.7.3> 
Exception `NoMethodError' at C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1483 - undefined method `to_ary' for #<Gem::Specification name=webrat version=0.7.3> 
Exception `Errno::EEXIST' at C:/Ruby193/lib/ruby/1.9.1/fileutils.rb:247 - File exists - C:/Ruby193/lib/ruby/gems/1.9.1 
Exception `Gem::Package::FormatError' at C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/package/tar_input.rb:122 - no metadata found in C:/Ruby193/lib/ruby/gems/1.9.1/cache/webrat-0.7.3.gem 
Exception `Gem::InstallError' at C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/installer.rb:121 - invalid gem format for C:/Ruby193/lib/ruby/gems/1.9.1/cache/webrat-0.7.3.gem 
ERROR: Error installing webrat: 
     invalid gem format for C:/Ruby193/lib/ruby/gems/1.9.1/cache/webrat-0.7.3.gem 

Answer 1

看起来好像更新到Rubygems 1.8.17照顾这个问题。 OP使用update_rubygems。