Regex string modifications

Question

I have the following String and I want to filter the MBRB1045T4G out with a regular expression in Java. How would I achieve that?

String:

<p class="ref">
<b>Mfr Part#:</b>
MBRB1045T4G<br>


<b>Technologie:</b>&nbsp;
    Tab Mount<br>



<b>Bauform:</b>&nbsp;
    D2PAK-3<br>



<b>Verpackungsart:</b>&nbsp;
    REEL<br>



<b>Standard Verpackungseinheit:</b>&nbsp;
    800<br>

Please refrain from parsing HTML with RegEx as it will drive you insane. Use an HTML parser instead. — Madara's Ghost
– Madara's Ghost, Commented May 8, 2012 at 17:00
What is your constraint? The second line after ? Something which starts at beginning of lińe with an uppercase letter? Something which ends with 4G? Something, 3 lines before Technologie? — user unknown
– user unknown, Commented May 8, 2012 at 17:37
basically before the String I want there is the and then the ... so its STRING but there is a line break between the in the html, is that relevant? — Dominik
– Dominik, Commented May 8, 2012 at 17:41

alexg · Accepted Answer · 2012-05-08 17:39:16Z

3

As Wrikken correctly says, HTML can't be parsed correctly by regex in the general case. However it seems you're looking at an actual website and want to scrape some contents. In that case, assuming space elements and formatting in the HTML code don't change, you can use a regex like this:

 Mfr Part#:</b>([^<]+)<br>

And collect the first capture group like so (where string is your HTML):

Pattern pt = Pattern.compile("Mfr Part#:</b>\s+([^<]+)<br>",Pattern.MULTILINE);
Matcher m = pt.matcher(string); 
if (m.matches())
    System.out.println(m.group(1));

edited May 8, 2012 at 17:39

answered May 8, 2012 at 16:43

alexg

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3 Comments

Dominik Over a year ago

Pattern pt = Pattern.compile("Mfr Part#:([^<]+) "; ? How would I get the string?

alexg Over a year ago

Matcher m = pt.matcher(string); if (m.matches()) System.out.println(m.group(1));

Dominik Over a year ago

Element desc = doc.select("p[class=ref]").first(); logger.debug("found ref:"+ desc.text()); Pattern pt = Pattern.compile("Mfr Part#:([^<]+) "); Matcher m = pt.matcher(desc.text()); if (m.matches()){ logger.debug("found partnumber:"+ m.group(1)); article.setManufacturerArticleNumber(m.group(1)); article.setDistributorArticleNumber(m.group(1)); }

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