JasperReports - genrates empty PDF

[igor kvak]

Hi,
I am new to JasperReports and I am trying to create a sample PDF report, but all I get is an empty PDF - no text, just a blank page.
<?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="report1" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="ff8cf6a0-564b-4cd3-b13d-e795abe30cb7"> <property name="ireport.zoom" value="1.0"/> <property name="ireport.x" value="0"/> <property name="ireport.y" value="0"/> <parameter name="parameter1" class="java.lang.String"/> <background> <band splitType="Stretch"/> </background> <title> <band height="79" splitType="Stretch"/> </title> <pageHeader> <band height="35" splitType="Stretch"/> </pageHeader> <columnHeader> <band height="61" splitType="Stretch"/> </columnHeader> <detail> <band height="125" splitType="Stretch"> <textField> <reportElement uuid="78cbabe6-8370-411b-98ab-a3ee438d6839" x="200" y="41" width="100" height="20"/> <textElement/> <textFieldExpression><![CDATA[$P{parameter1}]]></textFieldExpression> </textField> </band> </detail> <columnFooter> <band height="45" splitType="Stretch"/> </columnFooter> <pageFooter> <band height="54" splitType="Stretch"/> </pageFooter> <summary> <band height="42" splitType="Stretch"/> </summary> </jasperReport>

JasperReport jasperReport = JasperCompileManager.compileReport("ireports/simulRuleReport.jrxml");
Map<String, Object> parameters = new HashMap<String, Object>();
parameters.put("parameter1","test");
JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, parameters);
JasperExportManager.exportReportToPdfFile(jasperPrint, "test.pdf");

The resulting PDF should a single text field.
Could you please help me what is wrong with my simple code?

Thanks a lot

[Paul Clapham]

It's hard to tell what you are testing there. So, try replacing the parameter value in the template by a constant value. That way you know whether you have problems with your template or problems with providing a parameter to it.

[igor kvak]

thanks for your reply, but I've already solved it - I should use JREmptyDataSource

instead of

 JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, parameters); 

it is now

 JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, parameters, new JREmptyDataSource()); 

[Paul Clapham]

Glad to hear that, Igor, and thanks for the feedback!