我是 jasper 报告的新手,我不知道如何将 JRBeanCollectionDataSource 仅传递给子报表,将 JREmptyDataSource 传递给主 ireport。
我有一个 java bean 类 usingbean 具有属性 compet 和 compet_name 以及 getter 和 setter 方法。
在我的主报告中,我有一个字段名称为 dataBeanList,它是 usingbean 类型的 Arraylist,并且字段属性设置为类型列表。
我的子报告有两个字段,分别命名为 compet 和 compet_name ...
<subreport>
<reportElement uuid="0db7b8b7-9cf5-41fc-b271-ffb6333c80f3" x="129" y="30" width="200" height="100"/>
<dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource($F{dataBeanList})]]></dataSourceExpression>
<subreportExpression><![CDATA[$P{SUBREPORT_DIR} + "subreport1.jasper"]]></subreportExpression>
</subreport>
我的java代码是...
try
{
Map<String, Object> parameters = new HashMap<String, Object>();
newpdftemplate newpdftemplate = new newpdftemplate();
ArrayList<usingbean> dataBeanList = newpdftemplate.getDataBeanList();
JRBeanCollectionDataSource beanColDataSource = new
JRBeanCollectionDataSource(dataBeanList);
jasperDesign = JRXmlLoader.load("D:/workspace/itxtgraph/jrxml/FirstReport.jrxml");
jasperReport = JasperCompileManager.compileReport(jasperDesign);
parameters.put("SUBREPORT_DIR", "D:/workspace/itxtgraph/jrxml/");
jasperPrint = JasperFillManager.fillReport(jasperReport,parameters, new JREmptyDataSource());
JasperExportManager.exportReportToPdfFile(jasperPrint,
"D:/workspace/itxtgraph/report/SecondReport.pdf");
response.setContentType("application/pdf");
}
我的主报告正在填写,但子报告为空,带有静态文本。请告诉我我在哪里做错了
错误是:
13 Nov, 2013 4:44:31 PM net.sf.jasperreports.engine.fill.JRFillSubreport prepare
SEVERE: Fill 1: exception
net.sf.jasperreports.engine.JRException: Error retrieving field value from bean :
at net.sf.jasperreports.engine.data.JRAbstractBeanDataSource.getBeanProperty(JRAbstractBeanDataSource.java:123)
at net.sf.jasperreports.engine.data.JRAbstractBeanDataSource.getFieldValue(JRAbstractBeanDataSource.java:96)
at net.sf.jasperreports.engine.data.JRBeanCollectionDataSource.getFieldValue(JRBeanCollectionDataSource.java:100)
at net.sf.jasperreports.engine.fill.JRFillDataset.setOldValues(JRFillDataset.java:1331)
at net.sf.jasperreports.engine.fill.JRFillDataset.next(JRFillDataset.java:1232)
at net.sf.jasperreports.engine.fill.JRFillDataset.next(JRFillDataset.java:1208)
at net.sf.jasperreports.engine.fill.JRBaseFiller.next(JRBaseFiller.java:1577)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:149)
at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:932)
at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:864)
at net.sf.jasperreports.engine.fill.JRFillSubreport.fillSubreport(JRFillSubreport.java:655)
at net.sf.jasperreports.engine.fill.JRSubreportRunnable.run(JRSubreportRunnable.java:59)
at net.sf.jasperreports.engine.fill.AbstractThreadSubreportRunner.run(AbstractThreadSubreportRunner.java:203)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.NoSuchMethodException: Unknown property '' on class 'class itxtgraph.usingbean'
at org.apache.commons.beanutils.PropertyUtilsBean.getSimpleProperty(PropertyUtilsBean.java:1313)
at org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:762)
at org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:837)
at org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.java:426)
at net.sf.jasperreports.engine.data.JRAbstractBeanDataSource.getBeanProperty(JRAbstractBeanDataSource.java:111)
... 15 more
如果直接在主报告中获取bean字段,为什么数组列表的每个元素都显示在新页面中