Try something like:
<factorial-calcul>result: <xsp:expr>fac(<xsp-request:get-parameter name="number" default="0"/>)</xsp:expr></factorial-calcul>
cyril vidal wrote:
Hi,
I would like to calculate the factorial of a number via XSP. The number should be transmitted as a parameter via HTTP.
The code I've got for this purpose is the following: it retrieves the parameter 'number' and defines a fac method, that calculates the factorial of its formal parameter.
My problem: I don't know the syntax to calculate the fac() for the parameter 'number'. For the moment, I'm just able to calculate fac(8) or fac(13), and it runs well; but itsn't exactly what I want...
<?xml version="1.0" encoding="iso-8859-1"?>
<xsp:page language="java"
xmlns:xsp="http://apache.org/xsp";
xmlns:xsp-request="http://apache.org/xsp/request/2.0";>
<xsp:logic>
public static long fac(long n) {
if (n>1) return (fac(n-1)*n);
else return 1;
}
</xsp:logic>
<document>
<para>
<xsp-request:get-parameter name="number" default="Not provided"/>
</para>
<factorial-calcul>result: <xsp:expr>fac(8)</xsp:expr></factorial-calcul>
</document>
</xsp:page>
I would be very grateful for any assistance,
Thanks,
Cyril.
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