如何從URL中獲取域名如何從URL字符串中獲取域名?例子:+----------------------+------------+| input | output |+----------------------+------------+| www.google.com | google || www.mail.yahoo.com | mail.yahoo || www.mail.yahoo.co.in | mail.yahoo || www.abc.au.uk | abc |+----------------------+------------+有關(guān):通過regex匹配web地址
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