Substract specific parameter from url java

Question

I need to substract an specific parameter (urlReturn) from a URL like this :

http://somedomain.mx/th=6048000&campus=A&matric=L01425785&serv=GRAD&count=2&per=TEST&passwd=69786e720c0f0e&mount=1000.00&urlReturn=http://somedomain.mx:7003/SP/app/login.xhtml?id=1234&mat=2323&fh=05012014124755&store=TESO

My final string should look like this:

String urlReturn = http://somedomain.mx:7003/SP/app/login.xhtml?id=1234&mat=2323;

And the rest of the string should look like this:

String urlReturn2 = http://somedomain.mx/th=6048000&campus=A&matric=L01425785&serv=GRAD&count=2&per=TEST&passwd=69786e720c0f0e&mount=1000.00&fh=05012014124755&store=TESO

I currently have this :

String string = string.toString().split("\\&")[0];

But the urlReturn parameter should always come as the first one.

Show us what you have done. It'd take a one substring and a couple of indexOf to get what you want. — elbuild
– elbuild, Commented Jan 10, 2014 at 23:42

elbuild · Accepted Answer · 2014-01-10 23:48:38Z

1

Try this (s is your original String):

 urlReturn = s.substring(0, s.indexOf("&urlReturn=")).replace("&urlReturn=", "");
 urlReturn2 = s.substring(s.indexOf("&urlReturn=")).replace("&urlReturn=", "");

Definitely not elegant at all, but working. I really need some sleep now so take my anser carefully :) You may alswo wanto to check if the parameters is in the String s via the contains method to avoid index out of bounds exceptions.

answered Jan 10, 2014 at 23:48

elbuild

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Jean-Bernard Pellerin · Accepted Answer · 2014-01-10 23:36:21Z

0

use string#split

url.split("\\?")[1];

answered Jan 10, 2014 at 23:36

Jean-Bernard Pellerin

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4 Comments

Keppil Over a year ago

This doesn't produce anything that's close to what OP is asking for.

Jean-Bernard Pellerin Over a year ago

@Keppil it lets him extract a part that he needs. He'd of course need to split again to get the first part, but I'm not going to do all the work for him. And I wouldn't bother with regex because if he's asking this it's probably beyond his skillset for the time being.

Keppil Over a year ago

No, it lets him extract a part of what he needs, while discarding parts of what he wants to keep.

Jean-Bernard Pellerin Over a year ago

@Keppil you can still do another split on the same original string and then concatenate things together

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