Question

C#正则表达式则如何验证url？

麻烦给出正则的时候，需要能够验证的url涵盖面比较广的，能够验证所有种类的url。谢谢。

Answer 1

String regEx = "^(http|https|ftp)\\://([a-zA-Z0-9\\.\\-]+(\\:[a-zA-"
+ "Z0-9\\.&%\\$\\-]+)*@)?((25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{"
+ "2}|[1-9]{1}[0-9]{1}|[1-9])\\.(25[0-5]|2[0-4][0-9]|[0-1]{1}"
+ "[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\\.(25[0-5]|2[0-4][0-9]|"
+ "[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\\.(25[0-5]|2[0-"
+ "4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])|([a-zA-Z0"
+ "-9\\-]+\\.)*[a-zA-Z0-9\\-]+\\.[a-zA-Z]{2,4})(\\:[0-9]+)?(/"
+ "[^/][a-zA-Z0-9\\.\\,\\?\\'\\\\/\\+&%\\$\\=~_\\-@]*)*$";