[英]Java jasper reports list as data source
我想將列表對象作為我的數據源,你能告訴我.jrxml
文件我應該如何設計我的報告?
public class TestReport
{
public void runReport(String fileName, String outFileName)
{
try
{
List<R> list = new ArrayList<R>(5);
Map parameters = new HashMap();
list.add(new R("a1" ,"a2"));
list.add(new R("b1" ,"b2"));
list.add(new R("c1" ,"c2"));
/*parameters.put("my_name", "faisal khan");
parameters.put("my_addr", "address comes here");*/
JasperPrint print = JasperFillManager.fillReport( fileName, parameters, new JREmptyDataSource());
JRExporter exporter = new JRPdfExporter();
exporter.setParameter(
JRExporterParameter.OUTPUT_FILE_NAME,outFileName);
exporter.setParameter(
JRExporterParameter.JASPER_PRINT, print);
JasperExportManager.exportReportToPdfFile(print, outFileName);
print = null;
exporter = null;
} catch (Exception e) {
e.printStackTrace();
}
}
private class R{
private String name;
private String addr;
public R(String name, String addr) {
super();
this.name = name;
this.addr = addr;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAddr() {
return addr;
}
public void setAddr(String addr) {
this.addr = addr;
}
}
public static void main(String args[]){
new TestReport().runReport("/home/faisalloe/ireports/report1.jasper", "/home/faisalloe/ireports/report1.pdf");
}
}
為集合使用JasperDatasource: net.sf.jasperreports.engine.data.JRBeanCollectionDataSource
JasperPrint print = JasperFillManager.fillReport( fileName, parameters, new JRBeanCollectionDataSource(list));
您的報告將針對每個元素重復一次。 或者,您可以根據主報告定義子報表,每個列表元素重復一次。
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