How can I make the total paramater appear only on the last page of a report with lots of concepts.
The report repeats istelf until the list of concepts is displayed in two or more pages. The total appears in all of them because the parameter (received as $PTotal) is on the footer of the page.
I need this to be displayed only in the footer of the last page. It doesnt matter if I leave that space as blank, I just need the parameter to be displayed only at the last page.
This is not a report composed of varios pages, it generates multiple pages until the list fits. Just to clarify.
How can I fix that parameter tag with a printWhenExpression tag?
Copy your footer band and rename it to a lastPageFooter band. Keep the original footer intact, but delete the textField for $P{total} from it. The lastPageFooter band, including your total, will only be printed on the last page of the report.
If you just use the summary-band for this purpose?
.......
<summary>
<band height="146" splitType="Stretch">
<reportElement .../>
<textElement ...>
<font .../>
</textElement>
<textFieldExpression class="java.lang.String"><![CDATA[$P{total}]]> </textFieldExpression>
</band>
</summary>
</jasperReport>
Try using a PrintWhenExpression of
$V{PAGE_NUMBER} == $V{PAGE_COUNT}
You can try to use "Last Page Footer" band
来源：https://stackoverflow.com/questions/7111260/how-to-print-the-grand-total-only-in-the-last-page-of-a-very-long-report