执行以下安装的安装包https://rubygems.org/pages/downloadhttp://rubyinstaller.org/downloads/1.默认路径安装ruby186-26.exe2.本地安装watir-1.4.1.gem，执行geminstallwatir-1.4.1.gem-l3.本地安装rubygems-update-1.3.4.gem，执行geminstallrubygems-update-1.3.4.gem4.更新rubygems，执行update_rubygems(这一步先忽略，有影响再说)5.本地安装mime-types-1.15.gem,执行geminstallmime-types-