Get the URL's domain name or IP and port in Java

Get the domain name of the URL in Java or IP and port get IP and domain name method one, use regular expressions

Publicstatic string GetIP (string url) {Filter using regular expressions, String re =((HTTP|FTP|HTTPS)://) (([a-za-z0-9._-]+) | ( [0-9] {1,3}. [0-9] {1,3}. [0-9] {1,3}. [0-9] {1,3})) (([a-za-z]{2,6}) |        (: [0-9]{1,4})? "; Stringstr ="";Compile regular expression pattern pattern = pattern.compile (re);//ignoring case notation //Pattern pat = Pattern.compile (RegEx, pattern.case_insensitive); Matcher Matcher = pattern.matcher (URL); //if url==http://127.0.0.1:9040 or www.baidu.com, regular expressions indicate matching if (Matcher.matches ()) {str = URL;} else {string[] split2 = Url.split (re); if (Split2.length > 1) {String substring = url.substring ( Span class= "Hljs-number" >0, Url.length ()-Split2[1].length ()); str = substring;} else {str = Split2[0];}} return STR;}         

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Get the IP and domain name method two, using the Java tool class implementation, call Mode GetIP (Uri.create ("http://127.0.0.1:9040/1/1.html");

 private static uri getip (Uri uri) {uri Effectiveuri = nu        ll try {//URI (string scheme, string userInfo, string host, int port , string //path, string query,string fragment) Effectiveuri =  New URI (Uri.getscheme (), Uri.getuserinfo (), Uri.gethost (), Uri.getport (), null, null, null); } catch (Throwable var4) {Effectiveuri = null;} return Effectiveuri; }

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Test

System. Out. println (GetIP ("Http://www.baidu.com/system/verList")); System. Out. println (GetIP ("Http://WWW.BAIDU.COM/TESE/verList")); System. Out. println (GetIP ("http://blog.csdn.net/weasleyqi/article/details/7912647")); System. Out. println (GetIP ("https://segmentfault.com/q/1010000000703645")); System. Out. println (GetIP ("Http://www.cnblogs.com/afarmer/archive/2011/08/29/2158860.html")); System.out.println (GetIP (; System.out.println ( " 1: "+ getip (" http://127.0.0.1:9040/system/verList ")) .out.println ( " 2: "+ getip (" http://127.0.0.1:9040/system/verList?loginName=1&password= ad07fb25aa2d3a9f96ee12f25e0be902 ")) ; System.out.println ( " 3: "+ getip (" http://127.0.0.1:9040/"))     

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Results

Summarize

It is recommended to use the second method, after all, is the Java tool class provided, matching complete.
The first, suitable for simple domain names, advantages: light, one way to achieve.

Get the URL's domain name or IP and port in Java