gistfile1.txt

URL query to Hash: 
Ruby代码 
irb(main):012:0> url = "http://javaeye.com?a=1&b=2&c=3#123"  
=> "http://javaeye.com?a=1&b=2&c=3#123"  
irb(main):013:0> url = URI.parse(url)  
=> #<URI::HTTP:0x4cca868 URL:http://javaeye.com?a=1&b=2&c=3#123>  
irb(main):014:0> url.query  
=> "a=1&b=2&c=3"  
irb(main):018:0> Hash[* url.query.split(/[&=]/)]  
=> {"a"=>"1", "b"=>"2", "c"=>"3"}  


Hash to URL Query： 


Ruby代码 
hash = {"a"=>"1", "b"=>"2", "c"=>"3"}  
irb(main):023:0> hash.map{|k_v| k_v.join "="} * "&"  
=> "a=1&b=2&c=3"