Question

I have the most basic java code to do a http request and it works fine. I request data and a ton of html comes back. I want to retrieve all the url’s from that page and list them. For a simple first test i made it look like this:

int b = line.indexOf("http://",lastE);
int e = line.indexOf("\"", b);

This works but as you can imagine it’s horrible and only works in 80% of the cases. The only alternative i could come up with myself sounded slow and stupid. So my question is pretty mutch do i go from

String html

to

List<Url> 

?

Answer 1

Pattern p = Pattern.compile("http://[\w^\"]++");
Matcher m = p.matcher(yourFetchedHtmlString);
while (m.find()) {
   nextUrl=m.group();//Do whatever you want with it
}

You may also have to tweak the regexp, as i have just written it without testing. This should be a very fast way to fetch urls.