安装了One-Click Ruby Installer for Windows，然后安装rails
C:\Documents and Settings\xxx>gem install rails
ERROR: While executing gem … (Gem::GemNotFoundException)
Could not find rails (> 0) in any repository
需要先升级gem
gem update --system
安装了One-Click Ruby Installer for Windows，然后安装rails
C:\Documents and Settings\xxx>gem install rails
ERROR: While executing gem … (Gem::GemNotFoundException)
Could not find rails (> 0) in any repository
需要先升级gem
gem update --system