Getting null values in report when using JavaBean Data Source

Question

When I tried to generate a report by using JavaBean Data Source and displaying the bean's field values in the table, the PDF report is showing null values.

I have a simple bean (PersonBean) as follows:

public class PersonBean {

    private String Field1;
    private String Field2;

    public String getField1() {
        return Field1;
    }

    public void setField1(String field1) {
        Field1 = field1;
    }

    public String getField2() {
        return Field2;
    }

    public void setField2(String field2) {
        Field2 = field2;
    }
}

The Person class which populate and return the collection of bean is as follows:

import java.util.ArrayList;
import java.util.List;

public class Person {

    public static java.util.List getReportData() throws Exception {
        List personBeanList = null;
        try {
            personBeanList = new ArrayList();

            PersonBean personBean1 = new PersonBean();
            personBean1.setField1("Hina");
            personBean1.setField2("Sachdev");
            personBeanList.add(personBean1);

            PersonBean personBean2 = new PersonBean();
            personBean2.setField1("Swathi");
            personBean2.setField2("Singh");
            personBeanList.add(personBean2);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return personBeanList;
    }
}

The PersonReport class which creates report is as follows:

import java.io.FileNotFoundException;
import java.util.*;

import net.sf.jasperreports.engine.*;
import net.sf.jasperreports.engine.data.JRBeanCollectionDataSource;
import net.sf.jasperreports.engine.design.JasperDesign;
import net.sf.jasperreports.engine.xml.JRXmlLoader;
import net.sf.jasperreports.view.JasperViewer;

public class PersonReport implements JRDataSource {

    public static void main(String[] args) throws JRException, FileNotFoundException {
        try {
            Map params = new HashMap();
            JasperDesign jasperDesign = JRXmlLoader.load("C:/Users/sachdevh/Desktop/reports/personReport.jrxml");
            JasperReport jasperReport = JasperCompileManager.compileReport(jasperDesign);
            JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, params, 
                    new JRBeanCollectionDataSource(Person.getReportData()));
            JasperExportManager.exportReportToPdfFile(jasperPrint, "./Util/bean.pdf");
            JasperViewer.viewReport(jasperPrint);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Override
    public Object getFieldValue(JRField arg0) throws JRException {
        return null;
    }

    @Override
    public boolean next() throws JRException {
        return false;
    }
}

By using iReport 4.6.0, I designed a report by inserting table component.

The jrxml file is as follows:



    
        
        
            
        
        
            
        
    
    
        
    
    
        
    
    
        
    
    
        
    
    
        
    
    
        
    
    
        <band height="79" splitType="Stretch"/>

I think the datasource expression below

Getting null values in report when using JavaBean Data Source

Answers (1)

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