Getting the value of an input tag with a specific ID using regex

Question

I have following html content part, and I want to get the value

-7326630261683062897:1196341531039871985

from all http content. There is only one unique point that is id javax.faces.ViewState.

How can I get the value? What kind of regex do I have to use?

<input type="hidden" name="javax.faces.ViewState" id="javax.faces.ViewState" 
value="-7326630261683062897:1196341531039871985" autocomplete="off" />

I would caution you against using regex for any HTML tag. Considering you're using Java, there's probably already a parser for HTML. Check out the link above — skamazin
– skamazin, Commented Aug 7, 2014 at 18:57

TheBat · Accepted Answer · 2014-08-07 19:00:49Z

0

Pattern p = Pattern.compile("value=\"(-)*[\\d]+:[\\d]+\"");
Matcher m = p.matcher(html);
while(m.matches()){
    String s = m.group();
    s = s.subString(7, s.size()-2);
}

At the point after the substring call, s should contain just what you want.

answered Aug 7, 2014 at 19:00

TheBat

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2 Comments

Ahmet Karakaya Over a year ago

where to use id="javax.faces.ViewState". There are many value="" statements in html content

skamazin Over a year ago

Use a parser if you want all the values. It will do a much better job and less head ache for you

Federico Piazza · Accepted Answer · 2014-08-08 01:38:20Z

0

You can use the following regex:

id="javax\.faces\.ViewState".*value="(.*?)"

Working demo

MATCH 1
1.  [84-124]    `-7326630261683062897:1196341531039871985`

answered Aug 8, 2014 at 1:38

Federico Piazza

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