JasperReports basic example

wplaat — Thu, 11 Mar 2010 19:00:46 +0000

Hi everybody,

Today i have played around with JasperReports. Really nice java tool to created very easy reports. I did not find many examples on internet. Therefor I post my first try. I hope this will help other developers starting up with this great tool.

This example runs a query (JDBC connected) with some parameters define in Java. The result is converted to PDF and then zipped.

Test.java file


import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;

import java.sql.Connection;
import java.sql.DriverManager;

import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;

import net.sf.jasperreports.engine.JasperCompileManager;
import net.sf.jasperreports.engine.JasperExportManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;

/**
 * The Class Test.
 */
public class Test {

	/** The Constant LOG. */
	private static final Logger LOG = Logger.getLogger(test.class);

	/** The Constant BUFFER. */
	final static int BUFFER = 10240;

	/** The connection. */
	static Connection connection = null;

	/**
	 * Connect database.
	 */
	static void ConnectDatabase() {
		try {
			// Load the JDBC driver
			String driverName = "oracle.jdbc.driver.OracleDriver";
			Class.forName(driverName);

			// Create a connection to the database
			String serverName = "127.0.0.1";
			String portNumber = "1521";
			String sid = "XE";
			String url = "jdbc:oracle:thin:@" + serverName + ":" + portNumber + ":" + sid;
			String username = "test";
			String password = "test";
			connection = DriverManager.getConnection(url, username, password);
		} catch (ClassNotFoundException e) {
			System.err.println("Could not find the database driver");
		} catch (Exception e) {
			System.err.println("Could not connect to the database");
		}
	}

	/**
	 * File zip.
	 */
	static void fileZip() {

		BufferedInputStream origin = null;
		try
		{
			FileOutputStream dest = new FileOutputStream("test.zip");
			ZipOutputStream out = new ZipOutputStream(new BufferedOutputStream(dest));
			byte data[] = new byte[BUFFER];

			// get a list of files from current directory
			File f = new File("src/.");
			String files[] = f.list();

			for (int i=0; i parameters = new HashMap();
			parameters.put("ReportTitle", "User Report");
			parameters.put("DataFile", "src/test1.jrxml");
			parameters.put("IdRange", 10);	

			LOG.info("Generated report");
			jasperPrint = JasperFillManager.fillReport(jasperReport, parameters, connection);
			LOG.info("time : " + (System.currentTimeMillis() - start)+ " ms.");

			LOG.info("Generated PDF");
			JasperExportManager.exportReportToPdfFile(jasperPrint, "src/test.pdf");
			LOG.info("time : " + (System.currentTimeMillis() - start)+ " ms.");

			LOG.info("Create Zip File");
			fileZip();
			LOG.info("time : " + (System.currentTimeMillis() - start)+ " ms.");

		} catch (Exception e) {
			e.printStackTrace();
		}
		LOG.info("--------");
		LOG.info("Done");
	}
}

JaspersReports test.jrxml (Report template) file.

PlaatSoft

JasperReports basic example