Regular expression to extract image url from html code

Question

I wanted to extract Url of image from html code, e.g. html code below:

<div class="imageContainer">
   <img src="http://ecx.images-amazon.com/images/I/41%2B7N48F7JL._SL135_.jpg"
      alt="" width="135" height="94"
      style="margin-top: 21px; margin-bottom:20px;" /></div>

And I got a code from net

String regexImage = "(?<=<img (*)src=\")[^\"]*";
Pattern pImage = Pattern.compile(regexImage);
Matcher mImage = pImage.matcher(elementString);
while (mImage.find()) {
   String imagePath = mImage.group();}

which is working and has re(regular expression)

"(?<=<img src=\")[^\"]*"

But now I want to extract image url from html code like below :

<img onerror="img_onerror(this);" data-logit="true" data-pid="MOBDDDBRHVWQZHYY"
   data-imagesize="thumb"
   data-error-url="http://img1a.flixcart.com/mob/thumb/mobile.jpg"
   src="http://img8a.flixcart.com/image/mobile/h/y/y/samsung-galaxy-s-duos-s7562-125x125-imadddczzr4qhqnc.jpeg"
   alt="Samsung Galaxy S Duos S7562: Mobile"
   title="Samsung Galaxy S Duos S7562: Mobile"></img></a>
<div class="bp-offer-image image-offer"></div>

where there is code between img and src=

I'm trying the regular expression as "(?<=<img (*)src=\")[^\"]*" but its not working. So please give me regular expression so that i can extract image url i.e. http://ecx.images-amazon.com/images/I/61xqOQ3Sj8L._SL135_.jpg from above html code.

And, first I'm using Jsoup to parse html to extract tags containing img :

doc = Jsoup.connect(urlFromBrowse).get();
            Elements elements = doc.getElementsByTag("img");

            for (Element element : elements) {
                String elementString = element.toString();

and passed this elementString to matcher() meathod. And from the tag(element) that I'm getting, I'm using regular expression to parse image url, name etc things.

Answer 1

This post is an answer to the question, not a guideline.

The question was not "RegExp vs DOM", the question was "Regular expression to extract image url from html code".

Here it is:

String htmlFragment =
   "<img onerror=\"img_onerror(this);\" data-logit=\"true\" data-pid=\"MOBDDDBRHVWQZHYY\"\n" + 
   "   data-imagesize=\"thumb\"\n" + 
   "   data-error-url=\"http://img1a.flixcart.com/mob/thumb/mobile.jpg\"\n" + 
   "   src=\"http://img8a.flixcart.com/image/mobile/h/y/y/samsung-galaxy-s-duos-s7562-125x125-imadddczzr4qhqnc.jpeg\"\n" + 
   "   alt=\"Samsung Galaxy S Duos S7562: Mobile\"\n" + 
   "   title=\"Samsung Galaxy S Duos S7562: Mobile\"></img></a>";
Pattern pattern =
   Pattern.compile( "(?m)(?s)<img\\s+(.*)src\\s*=\\s*\"([^\"]+)\"(.*)" );
Matcher matcher = pattern.matcher( htmlFragment );
if( matcher.matches()) {
   System.err.println(
      "OK:\n" +
      "1: '" + matcher.group(1) + "'\n" +
      "2: '" + matcher.group(2) + "'\n" +
      "3: '" + matcher.group(3) + "'\n" );
}

and the ouput:

OK:
1: 'onerror="img_onerror(this);" data-logit="true" data-pid="MOBDDDBRHVWQZHYY"
   data-imagesize="thumb"
   data-error-url="http://img1a.flixcart.com/mob/thumb/mobile.jpg"
   '
2: 'http://img8a.flixcart.com/image/mobile/h/y/y/samsung-galaxy-s-duos-s7562-125x125-imadddczzr4qhqnc.jpeg'
3: '
   alt="Samsung Galaxy S Duos S7562: Mobile"
   title="Samsung Galaxy S Duos S7562: Mobile"></img></a>'