How to display one group per page using Jasper Reports? - jasper-reports

Question

I'm using iReport to create a Jasper Report template, and I need to display one group per page:
Group 1: (Page One)
-Field1 Field2 Field3
Group 2: (Page Two)
-Field1 Field2 Field3
And so on.
I tried setting the Maximize Band Height property to true in the "Group Footer" band using iReport, but some empty pages are added when I try to review.

Answer 1

You can use isStartNewPage attribute of group.
You can add Group Header band and
1) set "Start on a new page" attribute as true
2) set band height as 0 (if you don't need it).
The working sample
The jrxml file:
<?xml version="1.0" encoding="UTF-8"?>
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="group_break" language="groovy" pageWidth="400" pageHeight="400" columnWidth="360" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="2bcb6f3d-2169-44f6-9e8a-db54ea21b5e0">
<queryString>
<![CDATA[SELECT DOCUMENTID, PRODUCTID, PRICE FROM POSITIONS ORDER BY DOCUMENTID]]>
</queryString>
<field name="DOCUMENTID" class="java.lang.Integer"/>
<field name="PRODUCTID" class="java.lang.Integer"/>
<field name="PRICE" class="java.math.BigDecimal"/>
<group name="docId" isStartNewPage="true">
<groupExpression><![CDATA[$F{DOCUMENTID}]]></groupExpression>
<groupHeader>
<band/>
</groupHeader>
</group>
<columnHeader>
<band height="20" splitType="Stretch">
<staticText>
<reportElement x="0" y="0" width="111" height="20" uuid="596f5fb4-7e6d-4e7e-88bf-b9c37d0fb1a1"/>
<box>
<topPen lineWidth="1.0"/>
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement textAlignment="Center"/>
<text><![CDATA[Position]]></text>
</staticText>
<staticText>
<reportElement x="111" y="0" width="111" height="20" uuid="4884f663-00cf-4b5f-9cc1-05d698b8154a"/>
<box>
<topPen lineWidth="1.0"/>
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement textAlignment="Center"/>
<text><![CDATA[Id]]></text>
</staticText>
<staticText>
<reportElement x="222" y="0" width="111" height="20" uuid="26c8d18f-2281-405c-a41b-bddcbcdebdbb"/>
<box>
<topPen lineWidth="1.0"/>
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textElement textAlignment="Center"/>
<text><![CDATA[Price]]></text>
</staticText>
</band>
</columnHeader>
<detail>
<band height="20" splitType="Stretch">
<textField>
<reportElement x="0" y="0" width="111" height="20" uuid="fb6369eb-4b92-41dd-b5b8-94a9210bf315"/>
<box leftPadding="10">
<topPen lineWidth="1.0"/>
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textFieldExpression><![CDATA[$F{DOCUMENTID}]]></textFieldExpression>
</textField>
<textField>
<reportElement x="111" y="0" width="111" height="20" uuid="9fcbb785-06fa-4f7a-bc6d-301cc8db4388"/>
<box leftPadding="10">
<topPen lineWidth="1.0"/>
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textFieldExpression><![CDATA[$F{PRODUCTID}]]></textFieldExpression>
</textField>
<textField>
<reportElement x="222" y="0" width="111" height="20" uuid="0d18c9fe-5a70-4890-b94d-f26d88bc97da"/>
<box leftPadding="10">
<topPen lineWidth="1.0"/>
<leftPen lineWidth="1.0"/>
<bottomPen lineWidth="1.0"/>
<rightPen lineWidth="1.0"/>
</box>
<textFieldExpression><![CDATA[$F{PRICE}]]></textFieldExpression>
</textField>
</band>
</detail>
<pageFooter>
<band height="50">
<textField>
<reportElement x="0" y="20" width="80" height="20" uuid="47486fe9-e21f-4913-a9c4-cef0d3e2df39"/>
<textElement textAlignment="Right"/>
<textFieldExpression><![CDATA["Page "+$V{PAGE_NUMBER}+" of"]]></textFieldExpression>
</textField>
<textField evaluationTime="Report">
<reportElement x="80" y="20" width="40" height="20" uuid="0f7df66b-bbe6-4373-962e-519584c44541"/>
<textFieldExpression><![CDATA[" " + $V{PAGE_NUMBER}]]></textFieldExpression>
</textField>
</band>
</pageFooter>
</jasperReport>
The result
The output result generated in iReport via preview mode