Working with URLs: jsoup Java HTML parser

Problem

You have a HTML document that contains relative URLs, which you need to resolve to absolute URLs.

Solution

1. Make sure you specify a base URI when parsing the document (which is implicit when loading from a URL), and
2. Use the abs: attribute prefix to resolve an absolute URL from an attribute:

Document doc = Jsoup.connect("http://jsoup.org").get();

Element link = doc.select("a").first();
String relHref = link.attr("href"); // == "/"
String absHref = link.attr("abs:href"); // "http://jsoup.org/"

Read full article from Working with URLs: jsoup Java HTML parser