我正在从我的网址中提取主机,并且通过制作最后一个/可选项而卡住了.正则表达式需要准备好接收以下内容:
http://a.b.com:8080/some/path/file.txt or ftp://a.b.com:8080/some/path or ftp://user@a.b.com/some/path or http://a.b.com or a.b.com/some/path and return a.b.com
所以...
(ftp://|http://)? optionally matches the first part then it gets hairy... so... without adding ugly (and wrong) regexp here... just in english (everything that isn't an '@') //optional (everything that isn't a '/' up to the first '/' IF it's there) //this is the host group that I want (everything else that trails) //optional
Kevin.. 5
你需要使用正则表达式吗?大多数语言都支持解析URL.例如,Java有java.net.URL,Python有urlparse模块,Ruby有URI模块.您可以使用它们来查询给定URL的不同部分.
你需要使用正则表达式吗?大多数语言都支持解析URL.例如,Java有java.net.URL,Python有urlparse模块,Ruby有URI模块.您可以使用它们来查询给定URL的不同部分.