首先，我创建一个图表，并为其设置CustomizerClass。我在setNoDataMessage中使用customizerClass来检查是否从数据库中选择了任何数据。该图表在摘要中工作正常，但是当我将图表放在页眉中时，NoDataMessage显示出来。
有没有人对这个问题有任何想法？
PS。该图表在页脚，细节方面也很好。 NoDataMessage显示在标题，网页页眉，列标题中。
由JasperReports java API导出的jrxml文件如下所示。
<?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="Sample3Report" pageWidth="700" pageHeight="3000" whenNoDataType="AllSectionsNoDetail" columnWidth="562" leftMargin="30" rightMargin="20" topMargin="30" bottomMargin="30" isTitleNewPage="true" isSummaryNewPage="true">
<style name="titleStyle" isDefault="true" forecolor="#000000" fontName="Helvetica" fontSize="20" isBold="true" isItalic="false" isUnderline="false" isStrikeThrough="false" isPdfEmbedded="true"/>
<style name="headerStyle" isDefault="true" forecolor="#FFFFFF" backcolor="#808080" fontName="Helvetica" fontSize="12" isBold="true" isItalic="false" isUnderline="false" isStrikeThrough="false" isPdfEmbedded="true"/>
<style name="detailStyle" isDefault="true" forecolor="#000000" fontName="Helvetica" fontSize="12" isBold="false" isItalic="false" isUnderline="false" isStrikeThrough="false" isPdfEmbedded="true"/>
<style name="pageheaderStyle" isDefault="true" forecolor="#000000" fontName="Helvetica" fontSize="10" isItalic="false" isUnderline="false" isStrikeThrough="false" isPdfEmbedded="true"/>
<parameter name="IMAGE" class="java.lang.String"/>
<queryString>
<![CDATA[select p.personid as personId, p.name as personName, p.age as personAge, c.carid as carId, c.model as carModel, c.color as carColor, c.price as carPrice from person p join car c on p.personid=c.ownerid order by personName]]>
</queryString>
<field name="personName" class="java.lang.String"/>
<field name="personAge" class="java.lang.Integer"/>
<field name="carModel" class="java.lang.String"/>
<field name="carColor" class="java.lang.String"/>
<field name="carPrice" class="java.lang.Integer"/>
<title>
<band height="700">
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="titleTextField" style="titleStyle" positionType="Float" stretchType="RelativeToTallestObject" mode="Opaque" x="0" y="250" width="600" height="300"/>
<box padding="1">
<pen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center"/>
<textFieldExpression class="java.lang.String"><![CDATA["Cars report"+"\n\n.subtitle"+"\n\n.writer"]]></textFieldExpression>
</textField>
</band>
</title>
<pageHeader>
<band height="500">
<textField isStretchWithOverflow="true" evaluationTime="Auto" isBlankWhenNull="true">
<reportElement key="titleTextField" style="detailStyle" positionType="Float" stretchType="RelativeToTallestObject" mode="Opaque" x="570" y="0" width="600" height="14"/>
<box padding="1">
<pen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Left"/>
<textFieldExpression class="java.lang.String"><![CDATA["Cars table"]]></textFieldExpression>
</textField>
<image>
<reportElement x="540" y="0" width="30" height="30"/>
<imageExpression class="java.lang.String"><![CDATA["http://static4.depositphotos.com/1029305/388/v/950/depositphotos_3889034-Stylized-cartoon-car.jpg"]]></imageExpression>
</image>
<areaChart>
<chart customizerClass="customizer.AreaChartCustomizer">
<reportElement x="0" y="100" width="350" height="200"/>
<chartTitle>
<titleExpression><![CDATA["chart1. line chart of portA"]]></titleExpression>
</chartTitle>
<chartSubtitle/>
<chartLegend/>
</chart>
<categoryDataset>
<categorySeries>
<seriesExpression><![CDATA["test"]]></seriesExpression>
<categoryExpression><![CDATA[$F{carModel}]]></categoryExpression>
<valueExpression><![CDATA[$F{carPrice}]]></valueExpression>
</categorySeries>
</categoryDataset>
<areaPlot>
<plot/>
<categoryAxisFormat>
<axisFormat>
<labelFont/>
<tickLabelFont/>
</axisFormat>
</categoryAxisFormat>
<valueAxisFormat>
<axisFormat>
<labelFont/>
<tickLabelFont/>
</axisFormat>
</valueAxisFormat>
</areaPlot>
</areaChart>
</band>
</pageHeader>
<columnHeader>
<band height="12">
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="headerField1" style="headerStyle" positionType="Float" stretchType="RelativeToTallestObject" mode="Opaque" x="0" y="0" width="150" height="12"/>
<box padding="2">
<pen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center"/>
<textFieldExpression class="java.lang.String"><![CDATA["Owner name"]]></textFieldExpression>
</textField>
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="headerField2" style="headerStyle" positionType="Float" stretchType="RelativeToTallestObject" mode="Opaque" x="150" y="0" width="100" height="12"/>
<box padding="2">
<pen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center"/>
<textFieldExpression class="java.lang.String"><![CDATA["Owner age"]]></textFieldExpression>
</textField>
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="headerField3" style="headerStyle" positionType="Float" stretchType="RelativeToTallestObject" mode="Opaque" x="250" y="0" width="150" height="12"/>
<box padding="2">
<pen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center"/>
<textFieldExpression class="java.lang.String"><![CDATA["Car model"]]></textFieldExpression>
</textField>
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="headerField4" style="headerStyle" positionType="Float" stretchType="RelativeToTallestObject" mode="Opaque" x="400" y="0" width="100" height="12"/>
<box padding="2">
<pen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center"/>
<textFieldExpression class="java.lang.String"><![CDATA["Car color"]]></textFieldExpression>
</textField>
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="headerField5" style="headerStyle" positionType="Float" stretchType="RelativeToTallestObject" mode="Opaque" x="500" y="0" width="100" height="12"/>
<box padding="2">
<pen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center"/>
<textFieldExpression class="java.lang.String"><![CDATA["Car price"]]></textFieldExpression>
</textField>
</band>
</columnHeader>
<detail>
<band height="12">
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="detailField1" style="detailStyle" positionType="Float" stretchType="RelativeToTallestObject" mode="Opaque" x="0" y="0" width="150" height="12"/>
<box padding="2">
<pen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Left"/>
<textFieldExpression class="java.lang.String"><![CDATA[$F{personName}]]></textFieldExpression>
</textField>
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="detailField2" style="detailStyle" positionType="Float" stretchType="RelativeToTallestObject" mode="Opaque" x="150" y="0" width="100" height="12"/>
<box padding="2">
<pen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Right"/>
<textFieldExpression class="java.lang.Integer"><![CDATA[$F{personAge}]]></textFieldExpression>
</textField>
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="detailField3" style="detailStyle" positionType="Float" stretchType="RelativeToTallestObject" mode="Opaque" x="250" y="0" width="150" height="12"/>
<box padding="2">
<pen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Left"/>
<textFieldExpression class="java.lang.String"><![CDATA[$F{carModel}]]></textFieldExpression>
</textField>
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="detailField4" style="detailStyle" positionType="Float" stretchType="RelativeToTallestObject" mode="Opaque" x="400" y="0" width="100" height="12"/>
<box padding="2">
<pen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Left"/>
<textFieldExpression class="java.lang.String"><![CDATA[$F{carColor}]]></textFieldExpression>
</textField>
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="detailField5" style="detailStyle" positionType="Float" stretchType="RelativeToTallestObject" mode="Opaque" x="500" y="0" width="100" height="12"/>
<box padding="2">
<pen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Left"/>
<textFieldExpression class="java.lang.Integer"><![CDATA[$F{carPrice}]]></textFieldExpression>
</textField>
</band>
</detail>
<pageFooter>
<band height="50">
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="titleTextField" style="pageheaderStyle" positionType="Float" stretchType="RelativeToTallestObject" mode="Opaque" x="30" y="0" width="600" height="14"/>
<box padding="1">
<pen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Left"/>
<textFieldExpression class="java.lang.String"><![CDATA["Cars table"]]></textFieldExpression>
</textField>
<image>
<reportElement x="0" y="0" width="50" height="50"/>
<imageExpression class="java.lang.String"><![CDATA[$P{IMAGE}]]></imageExpression>
</image>
</band>
</pageFooter>
<summary>
<band height="700">
<lineChart>
<chart isShowLegend="true">
<reportElement x="0" y="300" width="350" height="200"/>
<chartTitle>
<titleExpression><![CDATA["chart2. line chart of portB"]]></titleExpression>
</chartTitle>
<chartSubtitle/>
<chartLegend textColor="#FFFF00" backgroundColor="#0000FF"/>
</chart>
<categoryDataset>
<categorySeries>
<seriesExpression><![CDATA["test"]]></seriesExpression>
<categoryExpression><![CDATA[$F{carModel}]]></categoryExpression>
<valueExpression><![CDATA[$F{carPrice}]]></valueExpression>
</categorySeries>
</categoryDataset>
<linePlot>
<plot/>
<categoryAxisFormat>
<axisFormat>
<labelFont/>
<tickLabelFont/>
</axisFormat>
</categoryAxisFormat>
<valueAxisFormat>
<axisFormat>
<labelFont/>
<tickLabelFont/>
</axisFormat>
</valueAxisFormat>
</linePlot>
</lineChart>
<areaChart>
<chart customizerClass="customizer.AreaChartCustomizer">
<reportElement x="0" y="100" width="350" height="200"/>
<chartTitle>
<titleExpression><![CDATA["chart1. line chart of portA"]]></titleExpression>
</chartTitle>
<chartSubtitle/>
<chartLegend/>
</chart>
<categoryDataset>
<categorySeries>
<seriesExpression><![CDATA["test"]]></seriesExpression>
<categoryExpression><![CDATA[$F{carModel}]]></categoryExpression>
<valueExpression><![CDATA[$F{carPrice}]]></valueExpression>
</categorySeries>
</categoryDataset>
<areaPlot>
<plot/>
<categoryAxisFormat>
<axisFormat>
<labelFont/>
<tickLabelFont/>
</axisFormat>
</categoryAxisFormat>
<valueAxisFormat>
<axisFormat>
<labelFont/>
<tickLabelFont/>
</axisFormat>
</valueAxisFormat>
</areaPlot>
</areaChart>
<multiAxisChart>
<chart customizerClass="customizer.MultiAxisOrderCustomizer">
<reportElement x="0" y="500" width="350" height="200"/>
<chartTitle/>
<chartSubtitle/>
<chartLegend/>
</chart>
<multiAxisPlot>
<plot/>
<axis>
<areaChart>
<chart customizerClass="customizer.AreaChartCustomizer">
<reportElement x="0" y="100" width="350" height="200" backcolor="#FFFFFF"/>
<chartTitle color="#000000"/>
<chartSubtitle color="#000000"/>
<chartLegend textColor="#000000" backgroundColor="#FFFFFF"/>
</chart>
<categoryDataset>
<categorySeries>
<seriesExpression><![CDATA["test"]]></seriesExpression>
<categoryExpression><![CDATA[$F{carModel}]]></categoryExpression>
<valueExpression><![CDATA[$F{carPrice}]]></valueExpression>
</categorySeries>
</categoryDataset>
<areaPlot>
<plot/>
<categoryAxisFormat>
<axisFormat>
<labelFont/>
<tickLabelFont/>
</axisFormat>
</categoryAxisFormat>
<valueAxisFormat>
<axisFormat>
<labelFont/>
<tickLabelFont/>
</axisFormat>
</valueAxisFormat>
</areaPlot>
</areaChart>
</axis>
<axis>
<lineChart>
<chart>
<reportElement x="0" y="300" width="350" height="200" backcolor="#FFFFFF"/>
<chartTitle color="#000000"/>
<chartSubtitle color="#000000"/>
<chartLegend textColor="#000000" backgroundColor="#FFFFFF"/>
</chart>
<categoryDataset>
<categorySeries>
<seriesExpression><![CDATA["test"]]></seriesExpression>
<categoryExpression><![CDATA[$F{carModel}]]></categoryExpression>
<valueExpression><![CDATA[$F{carPrice}]]></valueExpression>
</categorySeries>
</categoryDataset>
<linePlot>
<plot/>
<categoryAxisFormat>
<axisFormat>
<labelFont/>
<tickLabelFont/>
</axisFormat>
</categoryAxisFormat>
<valueAxisFormat>
<axisFormat>
<labelFont/>
<tickLabelFont/>
</axisFormat>
</valueAxisFormat>
</linePlot>
</lineChart>
</axis>
</multiAxisPlot>
</multiAxisChart>
</band>
</summary>
</jasperReport>