How to display the page x of y for only the reports which are having more than one page

问题

I am using the jasper reports-4.5.0. I am generating the reports in different formats using this jasper. I want to display the page X of Y in my reports. So I am using iReport provided page number text field which is available in palette. It is displaying the page number in all the reports even the reports which are having the single page also.

So my requirement is I don't want the page x of y if my report has only one page. How do I accomplish this?

The below code is presently i am using according to the given answer.

<textField>
                    <reportElement x="395" y="121" width="20" height="20">
                       <printWhenExpression><![CDATA[$V{PAGE_COUNT} > 1]]></printWhenExpression>
                    </reportElement>
                    <textElement textAlignment="Right"/>
                    <textFieldExpression><![CDATA["Page "+$V{PAGE_NUMBER}+" of"]]></textFieldExpression>
                </textField>
                <textField evaluationTime="Report">
                    <reportElement x="350" y="121" width="45" height="20">
                    <printWhenExpression><![CDATA[$V{PAGE_COUNT} > 1]]></printWhenExpression>
                    </reportElement>
                    <textElement/>
                    <textFieldExpression><![CDATA[" " + $V{PAGE_NUMBER}]]></textFieldExpression>
                </textField>

If i used like this i am not getting the page numbers in the reports which are having the more than one page.

回答1:

You need to set the Print When Expression for the two fields that contain "Page "+$V{PAGE_NUMBER}+" of" and " " + $V{PAGE_NUMBER}. The jrxml portion with this two fields should look something like:

<textField>
    <reportElement uuid="90a3462d-cfa2-4768-904a-1edf4191f1b7" x="250" y="16" width="80" height="20">
        <printWhenExpression><![CDATA[$V{PAGE_COUNT} > 1]]></printWhenExpression>
    </reportElement>
    <textElement textAlignment="Right"/>
    <textFieldExpression><![CDATA["Page "+$V{PAGE_NUMBER}+" of"]]></textFieldExpression>
</textField>
<textField evaluationTime="Report">
    <reportElement uuid="01d43267-3247-48bb-9822-8b58ea860d7f" x="330" y="16" width="40" height="20">
        <printWhenExpression><![CDATA[$V{PAGE_COUNT} > 1]]></printWhenExpression>
    </reportElement>
    <textElement/>
    <textFieldExpression><![CDATA[" " + $V{PAGE_NUMBER}]]></textFieldExpression>
</textField>

来源：https://stackoverflow.com/questions/11242490/how-to-display-the-page-x-of-y-for-only-the-reports-which-are-having-more-than-o

标签

jasper-reports