java - How to split URL? -

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this code split url, code have problem. link appear double word, example www.utem.edu.my/portal/portal . words /portal/portal double in link appear. suggestion me extract links in webpage?

public string crawlurl(string strurl) {     string results = ""; // return     string protocol = "http://";      // assigns input inurl variable , checks add http     string inurl = strurl;     if (!inurl.tolowercase().contains("http://".tolowercase()) &&              !inurl.tolowercase().contains("https://".tolowercase())) {         inurl = protocol + inurl;     }      // pulls url contents web     string contecturl = pullurl(inurl);     if (contecturl == "") { // if fails, try https         protocol = "https://";         inurl = protocol + inurl.split("http://")[1];         contecturl = pullurl(inurl);     }      // declares variables used inside loop     string atagattr = "";     string href = "";     string msg = "";      // finds tag , stores href value output var     string bodytag = contecturl.split("<body")[1]; // find 1st <body>     string[] atags = bodytag.split(">"); // splits on every tag      //to show link different 1     int index = 0;      (string s: atags) {     // process if tag , contains href     if (s.tolowercase().contains("<a") && s.tolowercase().contains("href")) {          atagattr = s.split("href")[1]; // split on href          // split on space if contains         if (atagattr.tolowercase().contains("\\s"))             atagattr = atagattr.split("\\s")[2];          // splits on link , deals " or ' quotes         href = atagattr.split(((atagattr.tolowercase().contains("\""))? "\"" : "\'"))[1];          if (!results.tolowercase().contains(href))              //results += "~~~ " + href + "\r\n";          /*         * last touches url before display         *      adds http(s):// if not exist         *      adds base url if not exist         */          if(results.tolowercase().indexof("about") != -1) {             //contains 'about'         }         if (!href.tolowercase().contains("http://") && !href.tolowercase().contains("https://")) {              // http:// + baseurl + href             if (!href.tolowercase().contains(inurl.split("://")[1]))                 href = protocol + inurl.split("://")[1] + href;             else                 href = protocol + href;         }          system.out.println(href);//debug

consider use url class...

use suggested documentation : )

public static void main(string[] args) throws exception {          url aurl = new url("http://example.com:80/docs/books/tutorial"                            + "/index.html?name=networking#downloading");          system.out.println("protocol = " + aurl.getprotocol());         system.out.println("authority = " + aurl.getauthority());         system.out.println("host = " + aurl.gethost());         system.out.println("port = " + aurl.getport());         system.out.println("path = " + aurl.getpath());         system.out.println("query = " + aurl.getquery());         system.out.println("filename = " + aurl.getfile());         system.out.println("ref = " + aurl.getref());     } }

the output:

protocol = http

authority = example.com:80

host = example.com

port = 80

etc

after can take elements need create new 1 string/url :)


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