1. 保证ruby和gem没有问题的前提下

   rubyinstaller-1.9.2-p180.exe  以管理员打开安装 安装时 两个单选框 都选中
   

   C:\Documents and Settings\Administrator>ruby
   ruby 1.9.2p180 (2011-02-18) [i386-mingw32]ruby -v

   更新rubygem  gem update --system
   

   C:\Documents and Settings\Administrator>gem -v
   1.5.2

   
   

   gem install/list/uninstall selenium-webdriver

2.gem install selenium-webdriver报错

（一）

C:\Documents and Settings\Administrator>gem install selenium-webdriver
ERROR:  Could not find a valid gem ‘selenium-webdriver‘ (>= 0) in any repository
ERROR:  Possible alternatives: selenium-webdriver

C:\Documents and Settings\Administrator>gem sources --remove http://rubygems.org/
http://rubygems.org/ removed from sources

C:\Documents and Settings\Administrator>gem sources -a https://ruby.taobao.org/
https://ruby.taobao.org/ added to sources

C:\Documents and Settings\Administrator>gem sources -l
*** CURRENT SOURCES ***
https://ruby.taobao.org/

目的：修改gem镜像

（二）

没有加代理

3、查看文档

gem server 

localhost-0.0.0.0

gem install selenium-webdriver安装报错解决

原文：http://upcgg.blog.51cto.com/2968211/1660326