安装compass遇到ruby ssl证书报错的问题

安装的时候记得选择配置系统变量

1）改用http版本
>gem sources -r https://rubygems.org/
https://rubygems.org/  removed from sources
>gem sources -a http://rubygems.org/ 
https://rubygems.org/ is recommended for security over http://rubygems.org/
Do you want to add this insecure source? [yn]  y
http://rubygems.org/ added to sources
>gem sources
*** CURRENT SOURCES ***
http://rubygems.org/
注意https末尾是有斜杠的，改用http时也保持一致。