railsinstaller-2.1.0.exe 最新版可以到http://railsinstaller.org去下载 Windows下rails集成安装包,Ruby on Rails开发环境一键安装，各版本如下： C:\Users\jarry>ruby -v ruby 1.9.3p125 (2012-02-16) [i386-mingw32] C:\Users\jarry>rails -v Rails 3.2.1 C:\Users\jarry>gem -v 1.8.16 C:\Users\jarry>bundle -v Bundler version 1.0.22