Report Layout and Design - JasperReports for Java Developers

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<![CDATA[$F{lots_of_data}]]>

</textFieldExpression>

</textField>

</band>

</detail>

</jasperReport>

The following servlet fills the Jasper template generated from this JRXML and directs

the generated report to the browser window in PDF format:

package net.ensode.jasperbook;

import java.io.IOException;

import java.io.InputStream;

import java.io.PrintWriter;

import java.io.StringWriter;

import java.util.ArrayList;

import java.util.Collection;

import java.util.HashMap;

import javax.servlet.ServletException;

import javax.servlet.ServletOutputStream;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import net.sf.jasperreports.engine.JRDataSource;

import net.sf.jasperreports.engine.JasperRunManager;

import net.sf.jasperreports.engine.data.JRMapCollectionDataSource;

public class TextFieldStretchDemoServlet extends HttpServlet

{

private JRDataSource createReportDataSource()

{

JRMapCollectionDataSource dataSource;

Collection reportRows = initializeMapCollection();

dataSource = new JRMapCollectionDataSource(reportRows);

return dataSource;

}

private Collection initializeMapCollection()

{

ArrayList reportRows = new ArrayList();

HashMap datasourceMap = new HashMap();

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