Java 使用JasperReports API创建子报表
我能够使用JasperReports API创建主报告。但是,我们仍然坚持使用JasperReports API设计子报表,并将其添加到主报表设计中 主报告JRXMLJava 使用JasperReports API创建子报表,java,jasper-reports,Java,Jasper Reports,我能够使用JasperReports API创建主报告。但是,我们仍然坚持使用JasperReports API设计子报表,并将其添加到主报表设计中 主报告JRXML <band height="250" splitType="Stretch"> <subreport> <reportElement isPrintRepeatedValues="false" x="0" y="0" width="550" height="23
<band height="250" splitType="Stretch">
<subreport>
<reportElement isPrintRepeatedValues="false" x="0" y="0" width="550" height="233" isRemoveLineWhenBlank="true" backcolor="#000000">
</reportElement>
<dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource($F{time})]]>
</dataSourceExpression>
<subreportExpression><![CDATA["subreport.jasper"]]></subreportExpression>
</subreport>
</band>
<field name="count" class="java.lang.String"/>
<field name="timeStamp" class="java.lang.String"/>
<group name="ProductGroup">
<groupExpression><![CDATA[$F{count}]]></groupExpression>
<groupHeader>
<band height="250">
<timeSeriesChart>
<chart evaluationTime="Report">
<reportElement x="0" y="25" width="550" height="175"/>
<chartTitle/>
<chartSubtitle/>
<chartLegend/>
</chart>
<timeSeriesDataset timePeriod="Minute">
<dataset incrementType="None"/>
<timeSeries>
<seriesExpression><![CDATA["Count"]]></seriesExpression>
<timePeriodExpression><![CDATA[new Date(Long.valueOf($F{timeStamp})*1000)]]></timePeriodExpression>
<valueExpression><![CDATA[Integer.valueOf($F{count})]]></valueExpression>
</timeSeries>
</timeSeriesDataset>
<timeSeriesPlot isShowLines="true" isShowShapes="false">
<plot/>
<timeAxisFormat>
<axisFormat>
<labelFont/>
<tickLabelFont/>
</axisFormat>
</timeAxisFormat>
<valueAxisFormat>
<axisFormat>
<labelFont/>
<tickLabelFont/>
</axisFormat>
</valueAxisFormat>
</timeSeriesPlot>
</timeSeriesChart>
</band>
</groupHeader>
</group>
子报表JRXML
<band height="250" splitType="Stretch">
<subreport>
<reportElement isPrintRepeatedValues="false" x="0" y="0" width="550" height="233" isRemoveLineWhenBlank="true" backcolor="#000000">
</reportElement>
<dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource($F{time})]]>
</dataSourceExpression>
<subreportExpression><![CDATA["subreport.jasper"]]></subreportExpression>
</subreport>
</band>
<field name="count" class="java.lang.String"/>
<field name="timeStamp" class="java.lang.String"/>
<group name="ProductGroup">
<groupExpression><![CDATA[$F{count}]]></groupExpression>
<groupHeader>
<band height="250">
<timeSeriesChart>
<chart evaluationTime="Report">
<reportElement x="0" y="25" width="550" height="175"/>
<chartTitle/>
<chartSubtitle/>
<chartLegend/>
</chart>
<timeSeriesDataset timePeriod="Minute">
<dataset incrementType="None"/>
<timeSeries>
<seriesExpression><![CDATA["Count"]]></seriesExpression>
<timePeriodExpression><![CDATA[new Date(Long.valueOf($F{timeStamp})*1000)]]></timePeriodExpression>
<valueExpression><![CDATA[Integer.valueOf($F{count})]]></valueExpression>
</timeSeries>
</timeSeriesDataset>
<timeSeriesPlot isShowLines="true" isShowShapes="false">
<plot/>
<timeAxisFormat>
<axisFormat>
<labelFont/>
<tickLabelFont/>
</axisFormat>
</timeAxisFormat>
<valueAxisFormat>
<axisFormat>
<labelFont/>
<tickLabelFont/>
</axisFormat>
</valueAxisFormat>
</timeSeriesPlot>
</timeSeriesChart>
</band>
</groupHeader>
</group>
这些独立的XML将被编译并生成报告
但是,我想使用Jasper Report API创建这些。
我刚刚开始。但没有任何可用的例子
JRDesignSubreport jSubreport = new JRDesignSubreport(jasperDesign);
jSubreport.setUsingCache(false);
jSubreport.setRemoveLineWhenBlank(true);
JRDesignExpression subReportDataSourceExpr = new JRDesignExpression();
subReportDataSourceExpr.addResourceChunk("");
//How to set List Data Source?
JRDesignSubreportParameter subReportDataSource = new JRDesignSubreportParameter();
subReportDataSource.setExpression(subReportDataSourceExpr);
jSubreport.setDataSourceExpression(subReportDataSourceExpr);
//How to Add <subreportExpression><![CDATA["subreport.jasper"]]></subreportExpression>
JRDesignSubreport jSubreport=新的JRDesignSubreport(jasperDesign);
jSubreport.setUsingCache(false);
jSubreport.setRemoveLineWhenBlank(true);
JRDesignExpression subReportDataSourceExpr=新JRDesignExpression();
subReportDataSourceExpr.addResourceChunk(“”);
//如何设置列表数据源?
JRDesignSubreportParameter subReportDataSource=新JRDesignSubreportParameter();
setExpression(subReportDataSourceExpr);
setDataSourceExpression(subReportDataSourceExpr);
//如何添加
这可以通过以下方式完成
将子报表放在一个带内,然后将该带附加到主报表
band = new JRDesignBand();
band.setHeight(250);
band.setSplitType(SplitTypeEnum.STRETCH);
JRDesignSubreport jSubreport = new JRDesignSubreport(jasperDesign);
jSubreport.setUsingCache(false);
jSubreport.setRemoveLineWhenBlank(true);
jSubreport.setPrintRepeatedValues(false);
JRDesignExpression expression = new JRDesignExpression();
expression.setText("new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource($F{time})");
jSubreport.setDataSourceExpression(expression);
expression = new JRDesignExpression();
expression.setText("\"/path/to/sub.jasper\"");
jSubreport.setExpression(expression);
band.addElement(jSubreport);
令人惊叹的!为我工作。