November 2010 Posts

How to Handle Jasper Report’s NoSuchMethodException

I was generating an ordinary report, when suddenly i met a weird error. My Exception showed a net.sf.jasperreports.engine.JRException and a java.lang.NoSuchMethodException: Unknown property '' when im using Jasper Report’s JRBeanCollectionDataSource. I tought it was because my java bean is not Serializable, but changing my bean to Serializable still didnt fix my errors.
Here is my complete stacktrace

net.sf.jasperreports.engine.JRException: Error retrieving field value from bean : 
        at net.sf.jasperreports.engine.data.JRAbstractBeanDataSource.getBeanProperty(JRAbstractBeanDataSource.java:123)
        at net.sf.jasperreports.engine.data.JRAbstractBeanDataSource.getFieldValue(JRAbstractBeanDataSource.java:96)
        at net.sf.jasperreports.engine.data.JRBeanCollectionDataSource.getFieldValue(JRBeanCollectionDataSource.java:100)
        at net.sf.jasperreports.engine.fill.JRFillDataset.setOldValues(JRFillDataset.java:818)
        at net.sf.jasperreports.engine.fill.JRFillDataset.next(JRFillDataset.java:782)
        at net.sf.jasperreports.engine.fill.JRBaseFiller.next(JRBaseFiller.java:1433)
        at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:108)
        at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:908)
        at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:830)
        at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:85)
        at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:624)

Caused by: java.lang.NoSuchMethodException: Unknown property ''
        at org.apache.commons.beanutils.PropertyUtilsBean.getSimpleProperty(PropertyUtilsBean.java:1122)
        at org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:686)
        at org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:715)

Here is my source code snippet, take a look at line 12, that is where my exception happen.

  @Override
    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {     

        List<Log> logs = logService.select();

        FileInputStream fis = new FileInputStream("/ejournal.jasper");
        BufferedInputStream bufferedInputStream = new BufferedInputStream(fis);

        Map<String, String> map = new HashMap<String, String>();
        JRBeanCollectionDataSource jrbcds = new JRBeanCollectionDataSource(logs);

        JasperReport jasperReport = (JasperReport) JRLoader.loadObject(bufferedInputStream);
        JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, map, jrbcds);
    }

Well actually it’s very easy to fix it, you should either

  • Remove the empty field descriptions from the JRXML.
  • Set the field descriptions to match the bean property names.
  • Pass false as isUseFieldDescription when creating the bean data source, e.g. new JRBeanCollectionDataSource(data, false).

This is how i fixed it,

 @Override
    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {     

        List<Log> logs = logService.select();

        FileInputStream fis = new FileInputStream("/ejournal.jasper");
        BufferedInputStream bufferedInputStream = new BufferedInputStream(fis);

        Map<String, String> map = new HashMap<String, String>();
        JRBeanCollectionDataSource jrbcds = new JRBeanCollectionDataSource(logs,false);

        JasperReport jasperReport = (JasperReport) JRLoader.loadObject(bufferedInputStream);
        JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, map, jrbcds);
    }

I hope it can help others, because i spend some ridicoulously amount of time looking for this workaround.
;-)

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Creating Web Based Reports using Jasper Report

It’s easy to export reports to PDF if you do it in desktop application, but what if you had to do it in a web-based application? Here im trying to demonstrate on how to use servlets to generate a pdf based reports, using JasperReport libraries of course.

First, as always, a simple postgresql table,
on database “test”, schema “test”.

DROP TABLE master;
CREATE
    TABLE test.master
    (
        nama CHARACTER VARYING(30) NOT NULL,
        usia SMALLINT,
        CONSTRAINT idnama PRIMARY KEY (nama)
    )

Next step is a very simple jrxml file, i named it reportTest.jrxml

<?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="reportTest" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
	<field name="nama" class="java.lang.String"/>
	<field name="usia" class="java.lang.Short"/>
	<background>
		<band splitType="Stretch"/>
	</background>
	<title>
		<band height="31" splitType="Stretch">
			<staticText>
				<reportElement x="0" y="0" width="555" height="31"/>
				<textElement textAlignment="Center" verticalAlignment="Middle">
					<font size="24" isBold="true"/>
				</textElement>
				<text><![CDATA[Test Report Page]]></text>
			</staticText>
		</band>
	</title>
	<pageHeader>
		<band height="11" splitType="Stretch"/>
	</pageHeader>
	<columnHeader>
		<band height="8" splitType="Stretch"/>
	</columnHeader>
	<detail>
		<band height="25" splitType="Stretch">
			<textField>
				<reportElement x="19" y="0" width="100" height="20"/>
				<textElement textAlignment="Center"/>
				<textFieldExpression class="java.lang.String"><![CDATA[$F{nama}]]></textFieldExpression>
			</textField>
			<textField>
				<reportElement x="168" y="0" width="100" height="20"/>
				<textElement/>
				<textFieldExpression class="java.lang.Short"><![CDATA[$F{usia}]]></textFieldExpression>
			</textField>
		</band>
	</detail>
	<columnFooter>
		<band height="20" splitType="Stretch">
			<textField pattern="dd MMMMM yyyy">
				<reportElement x="455" y="0" width="100" height="20"/>
				<textElement textAlignment="Right"/>
				<textFieldExpression class="java.util.Date"><![CDATA[new java.util.Date()]]></textFieldExpression>
			</textField>
		</band>
	</columnFooter>
	<pageFooter>
		<band splitType="Stretch"/>
	</pageFooter>
	<summary>
		<band height="6" splitType="Stretch"/>
	</summary>
</jasperReport>

Im using Hibernate as my ORM library, thats why i need a java bean and a hbm.xml file,

package com.edw.report.bean;

public class Master  implements java.io.Serializable {

    private String nama;
    private Short usia;

    public Master() {
    }

    // other setters and getters

    @Override
    public String toString() {
        return "Master{" + "nama=" + nama + " usia=" + usia + '}';
    }
}
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
    <class name="com.edw.report.bean.Master" table="master" schema="test">
        <id name="nama" type="string">
            <column name="nama" length="30" />
            <generator class="assigned" />
        </id>
        <property name="usia" type="java.lang.Short">
            <column name="usia" />
        </property>
    </class>
</hibernate-mapping>

And this is my main hibernate configuration file, hibernate.cfg.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
  <session-factory>
    <property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
    <property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
    <property name="hibernate.connection.url">jdbc:postgresql://localhost:5432/test</property>
    <property name="hibernate.connection.username">postgres</property>
    <property name="hibernate.connection.password">password</property>
    
    <mapping resource="com/edw/report/bean/Master.hbm.xml"/>
  </session-factory>
</hibernate-configuration>

And a factory class to load my hibernate configuration file, it’s actually by default load hibernate.cfg.xml file.

package com.edw.report.util;

import org.hibernate.cfg.AnnotationConfiguration;
import org.hibernate.SessionFactory;

/**
 * Hibernate Utility class with a convenient method to get Session Factory object.
 *
 * @author edw
 */
public class HibernateUtil {
    private static final SessionFactory sessionFactory;

    static {
        try {
            sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();
        } catch (Throwable ex) {
            System.err.println("Initial SessionFactory creation failed." + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }

    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }
}

And finally, my servlet class. It use Jasper Report libraries, and export my report to PDF by changing its header to application/pdf instead of text/html. Take a look at line 53, class FileInputStream load my reportTest.jasper file that located under WEB-INF folder.

package com.edw.report.servlet;

import com.edw.report.bean.Master;
import com.edw.report.util.HibernateUtil;
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import javax.servlet.ServletContext;
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.JasperExportManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.data.JRBeanCollectionDataSource;

import net.sf.jasperreports.engine.util.JRLoader;
import org.apache.log4j.Logger;
import org.hibernate.Session;

/**
 *
 * @author edw
 */
public class ReportServlet extends HttpServlet {

    private Logger logger = Logger.getLogger(ReportServlet.class);

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        // set header as pdf
        response.setContentType("application/pdf");

        // set input and output stream
        ServletOutputStream servletOutputStream = response.getOutputStream();
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        FileInputStream fis;
        BufferedInputStream bufferedInputStream;

        try {
            // get report location
            ServletContext context = getServletContext();
            String reportLocation = context.getRealPath("WEB-INF");

            // get report
            fis = new FileInputStream(reportLocation + "/reportTest.jasper");
            bufferedInputStream = new BufferedInputStream(fis);

            // fetch data from database
            Session session = HibernateUtil.getSessionFactory().openSession();
            List<Master> masters = (List<Master>) session.createCriteria(Master.class).list();
            session.close();

            // log it
            for (Master master : masters) {
                logger.debug(master.toString());
            }

            // fill it
            JRBeanCollectionDataSource jrbcds = new JRBeanCollectionDataSource(masters);
            JasperReport jasperReport = (JasperReport) JRLoader.loadObject(bufferedInputStream);
            JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, new HashMap(), jrbcds);

            // export to pdf
            JasperExportManager.exportReportToPdfStream(jasperPrint, baos);

            response.setContentLength(baos.size());
            baos.writeTo(servletOutputStream);

            // close it
            fis.close();
            bufferedInputStream.close();

        } catch (Exception ex) {
            logger.error(ex.getMessage(), ex);
        } finally {
            servletOutputStream.flush();
            servletOutputStream.close();
            baos.close();
        }
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    @Override
    public String getServletInfo() {
        return "Reporting Servlet";
    }
}

Dont forget to register your servlet to web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
    <servlet>
        <servlet-name>ReportServlet</servlet-name>
        <servlet-class>com.edw.report.servlet.ReportServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>ReportServlet</servlet-name>
        <url-pattern>/ReportServlet</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
</web-app>

Here is my Netbeans’ project screenshoot



Btw if you are using Struts 1, it will be easier. All you have to do is create an Action class to handle all the reporting, and register it to struts-config.xml. Here is my example.

package com.edw.action;

public class ReportAction extends org.apache.struts.action.Action {

    private static final String SUCCESS = "success";
    private Logger logger = Logger.getLogger(ReportAction.class);

    @Override
    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        
        ServletContext context = getServlet().getServletContext();
        String reportLocation = context.getRealPath("WEB-INF");

        List<Log> logs = logService.select();

        FileInputStream fis = new FileInputStream(reportLocation+"/report.jasper");
        BufferedInputStream bufferedInputStream = new BufferedInputStream(fis);

        ServletOutputStream servletOutputStream = response.getOutputStream();
        ByteArrayOutputStream baos = new ByteArrayOutputStream();

        Map<String, String> map = new HashMap<String, String>();
        JRBeanCollectionDataSource jrbcds = new JRBeanCollectionDataSource(logs);
        JasperReport jasperReport = (JasperReport) JRLoader.loadObject(bufferedInputStream);

        JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, map, jrbcds);

        response.setContentType("application/pdf");
        JasperExportManager.exportReportToPdfStream(jasperPrint, baos);

        response.setContentLength(baos.size());
        baos.writeTo(servletOutputStream);

        // close all
        fis.close();
        bufferedInputStream.close();

        servletOutputStream.flush();
        servletOutputStream.close();

        return mapping.findForward(SUCCESS);
    }
}

dont forget to put your Action class on your struts-config.xml

<action path="/report" type="com.edw.action.ReportAction"/>

Hope this can help others, have fun. (*)

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How to Handle Jasper Report’s CompilationFailedException

I always use JasperReport for my java projects, but sometimes i found some weird java.lang.NoClassDefFoundError: org/codehaus/groovy/control/CompilationFailedException when im trying to get reports from jasper files. This is my full stack trace exception.

Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: org/codehaus/groovy/control/CompilationFailedException
        at java.lang.Class.getDeclaredConstructors0(Native Method)
        at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
        at java.lang.Class.getConstructor0(Class.java:2699)
        at java.lang.Class.newInstance0(Class.java:326)
        at java.lang.Class.newInstance(Class.java:308)
        at net.sf.jasperreports.engine.JasperCompileManager.getCompiler(JasperCompileManager.java:472)
        at net.sf.jasperreports.engine.JasperCompileManager.loadEvaluator(JasperCompileManager.java:238)
        at net.sf.jasperreports.engine.fill.JRFillDataset.createCalculator(JRFillDataset.java:416)
        at net.sf.jasperreports.engine.fill.JRBaseFiller.<init>(JRBaseFiller.java:408)
        at net.sf.jasperreports.engine.fill.JRVerticalFiller.<init>(JRVerticalFiller.java:74)
        at net.sf.jasperreports.engine.fill.JRVerticalFiller.<init>(JRVerticalFiller.java:56)
        at net.sf.jasperreports.engine.fill.JRFiller.createFiller(JRFiller.java:143)
        at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:79)
        at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:624)

Actually it happens because im still using Groovy as my report language, instead of Java. All i have to do is change reporting language to java, as you can see below.

Or adding groovy*.jar to your project’s classpath.

Have fun, cheers. (B)

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Set MySQL Connection TimeOut

Sometimes you find a condition where your database connection (MySQL) is time out because of your queries are spending too much time. This is a hint on how you increase your MySQL time out configuration.

First you query your default connection timeout.

SHOW VARIABLES LIKE 'connect_timeout';

As you can see below, i have approximately 10 seconds before my mysql connection time out.

Next is updated it to 60 seconds.

SET GLOBAL connect_timeout=60;

Simple isn’t it. ;)

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How to Play MP3 Files with Java

Well, it’s actually very simple, first of all you need to download libraries (mp3spi1.9.4.jar, jl1.0.jar and tritonus_share.jar) from Tritonus and from JLayer.

Here is how i code it,

package com.edw.mp3.main;

import java.io.File;
import java.io.IOException;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.SourceDataLine;
import org.apache.log4j.Logger;

public class Main extends Thread {

    private String filename;
    private static Logger logger = Logger.getLogger(Main.class);

    public Main(String filename) {
        super();
        this.filename = filename;
    }


    @Override
    public void run() {
        try {
            File file = new File(filename);

            AudioInputStream in = AudioSystem.getAudioInputStream(file);
            AudioInputStream din = null;
            AudioFormat baseFormat = in.getFormat();
            AudioFormat decodedFormat = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED,
                    baseFormat.getSampleRate(),
                    16,
                    baseFormat.getChannels(),
                    baseFormat.getChannels() * 2,
                    baseFormat.getSampleRate(),
                    false);
            din = AudioSystem.getAudioInputStream(decodedFormat, in);

            // play it...
            rawplay(decodedFormat, din);
            in.close();

        } catch (Exception e) {
            logger.error(e.getMessage(),e);
        } finally{
            logger.debug("finish playing "+filename);
        }
    }

    private synchronized void rawplay(AudioFormat targetFormat, AudioInputStream din) throws IOException, LineUnavailableException {
        byte[] data = new byte[4096];
        SourceDataLine line = getLine(targetFormat);
        if (line != null) {
            // Start
            line.start();
            int nBytesRead = 0, nBytesWritten = 0;
            while (nBytesRead != -1) {
                nBytesRead = din.read(data, 0, data.length);
                if (nBytesRead != -1) {
                    nBytesWritten = line.write(data, 0, nBytesRead);
                }

            }
            // Stop
            line.drain();
            line.stop();
            line.close();
            din.close();
        }

    }

    private synchronized SourceDataLine getLine(AudioFormat audioFormat) throws LineUnavailableException {
        SourceDataLine res = null;
        DataLine.Info info =
                new DataLine.Info(SourceDataLine.class, audioFormat);
        res = (SourceDataLine) AudioSystem.getLine(info);
        res.open(audioFormat);

        return res;
    }

    public static void main(String[] args) {
        // my relative path file name
        String song = "Bondan ft. Fade2Black-Ya Sudahlah.mp3";
        logger.debug("start playing "+song);
        Main mp3Sound = new Main(song);
        mp3Sound.start();        
    }
}

And my Netbeans’ project structure

Actually i code it a long time ago, Thank God it’s still works. If you have any suggestion, feel free to comment it.
Cheers.. (B)

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