little confusing regex in java

Question

There is a string in log file like that :

'AUR   HALAA /PART="CMF1_SAS_PROJECT" /ROLE="VR_ANALYST" /TY=C /CAP=S /DEL' (S)

'AUR and /ROLE="" are a constant part

HALAA and VR_ANALYST are inputs

My Regex is : "^'AUR (\\w+) .*? /ROLE=\"(\\w+)\".*$";

But it doesn't work correctly. Could some one show me the correct regex for this sentence please ?

here is online regex tester. Try to experiment there. regexpal.com — Antoniossss
– Antoniossss, Commented Oct 21, 2013 at 12:53
In addition to @Antoniossss I can also recommend regexplanet.com — user484261
– user484261, Commented Oct 21, 2013 at 13:06

Tim Pietzcker · Accepted Answer · 2013-10-21 13:36:51Z

2

It seems that there is more than one space after 'AUR - you need to allow the regex to match that, too:

"^'AUR +(\\w+) .*? /ROLE=\"(\\w+)\".*$";

You should use the .find() method, not matches(), because your string (if it's from a logfile) likely contains a newline at the end, and the .* won't match that. Plus, the anchors would be unnecessary in that case. So, try this:

Pattern regex = Pattern.compile("^'AUR +(\\w+) .*? /ROLE=\"(\\w+)\".*$");
Matcher regexMatcher = regex.matcher(strLine);
if (regexMatcher.find()) {
    first = regexMatcher.group(1);
    second = regexMatcher.group(2); 
}

edited Oct 21, 2013 at 13:36

answered Oct 21, 2013 at 12:53

Tim Pietzcker

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7 Comments

Batuhan B Over a year ago

When I try your regex without parameters like "^'AUR +(HALAA) .*? /ROLE=\"(VR_ANALYST)\".*$" It is still doesn't match :/

Tim Pietzcker Over a year ago

The regex does match. You might be using it wrong. How are you performing the match?

Batuhan B Over a year ago

String reg = "^'AUR +(HALAA) .*? /ROLE=\\\"(VR_ANALYST)\\\".*$"; Pattern regex = Pattern.compile(reg); if(regex.matcher(strLine).matches())

Tim Pietzcker Over a year ago

OK, and how are you performing the match? So far, you've only compiled a regex, not used it.

Batuhan B Over a year ago

I forget to added on that part, I editted my previous comment and also add that part to here. if(regex.matcher(strLine).matches())

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Maria · Accepted Answer · 2013-10-21 13:04:34Z

0

Try this ..

^'AUR\s*\w*.*/ROLE="\w*".*

answered Oct 21, 2013 at 13:04

Maria

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