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Asked: 2026-05-10T20:08:56+00:00

I hava a url such as search.do?offset=20 offset sometimes is in the url sometimes

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I hava a url such as search.do?offset=20

offset sometimes is in the url sometimes not. When it is not in the URL i want it to be 0.

i try, without success, to retrieve the value with a scriptlet as follows: 

<%  Integer offset = (pageContext.findAttribute('offset')==null) ? new Integer('0') : new Integer((String) pageContext.findAttribute('offset')); %>

Anyone knows what i am doing wrong?

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1 Answer

  1. You should use this instead.

    <% Integer offset = request.getParameter('offset') != null && request.getParameter('offset').length() > 0 ? new Integer(request.getParameter('offset')) : new Integer(0); %>

    Be careful because if ‘offset’ parameter has an incorrect integer representation a NumberFormatException will be thrown.

    This is basic JSP. You could use Struts or other J2EE framework that make these conversions safer for you.

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