提取后缀

Question

我需要从URL中提取的后缀，这意味着：

http://google.com/sports/golf =>运动/高尔夫 http://yahoo.com/blog?id=7 =>博客/ ID = 7

我怎么能acheive与正则表达式（红宝石样式）？

谢谢

Answer 1

使用URI模块.path + .query。

uri = URI("http://google.com/sports/golf") 
uri.path + "/" + uri.query 

Answer 2

如何为以下：:)

require 'uri' 
p URI.split("http://google.com/sports/golf").compact.drop(2).join("/") 
p URI.split("http://yahoo.com/blog?id=7").compact.drop(2).join("/") 

或者，

require 'uri' 

a = ["http://google.com/sports/golf","http://stackoverflow.com/questions/15766337/extract-suffix-from-url-regex/15766456#15766456","http://yahoo.com/blog?id=7"] 
a.each { |url| p URI.split(url).compact.drop(2).join("/") } 

输出：

"/sports/golf" 
"https://stackoverflow.com/questions/15766337/extract-suffix-from-url-regex/15766456/15766456" 
"/blog/id=7" 

Answer 3

试试这个：

irb(main):011:0> /(?:http:\/\/\w+\.\w+\/)(.+)/.match("http://yahoo.com/blog?id=7")[1] 
=> "blog?id=7" 
irb(main):012:0> /(?:http:\/\/\w+\.\w+\/)(.+)/.match("http://google.com/sports/golf")[1] 
=> "sports/golf" 
irb(main):013:0>