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| ÀÎÅÍ³Ý ÁÖ¼Ò À¯È¿¼º °Ë»ç (regular expression for url) |  |  
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 https://gist.github.com/dperini/729294
 
 
 public static boolean isVaildUrl(String url) {
 String reg =
 "^" +
 // protocol identifier
 "(?:(?:https?|ftp)://)" +
 // user:pass authentication
 "(?:\\S+(?::\\S*)?@)?" +
 "(?:" +
 // IP address exclusion
 // private & local networks
 "(?!(?:10|127)(?:\\.\\d{1,3}){3})" +
 "(?!(?:169\\.254|192\\.168)(?:\\.\\d{1,3}){2})" +
 "(?!172\\.(?:1[6-9]|2\\d|3[0-1])(?:\\.\\d{1,3}){2})" +
 // IP address dotted notation octets
 // excludes loopback network 0.0.0.0
 // excludes reserved space >= 224.0.0.0
 // excludes network & broacast addresses
 // (first & last IP address of each class)
 "(?:[1-9]\\d?|1\\d\\d|2[01]\\d|22[0-3])" +
 "(?:\\.(?:1?\\d{1,2}|2[0-4]\\d|25[0-5])){2}" +
 "(?:\\.(?:[1-9]\\d?|1\\d\\d|2[0-4]\\d|25[0-4]))" +
 "|" +
 // host name
 "(?:(?:[a-z\\u00a1-\\uffff0-9]-*)*[a-z\\u00a1-\\uffff0-9]+)" +
 // domain name
 "(?:\\.(?:[a-z\\u00a1-\\uffff0-9]-*)*[a-z\\u00a1-\\uffff0-9]+)*" +
 // TLD identifier
 "(?:\\.(?:[a-z\\u00a1-\\uffff]{2,}))" +
 ")" +
 // port number
 "(?::\\d{2,5})?" +
 // resource path
 "(?:/?\\S*)?" +
 "$";
 
 return url.matches(reg);
 }
 
 
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