How to avoid getting java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory

Question

I have a NetBeans project in which I want to design jasper report, when I fill report via JasperFillManager.fillReport then I found an error message.

How can I resolve this?

I've used iReport 5.0.0 and JasperReports library 5.1.0 .

my code is described below

try {
    String reportName = "./rptJobList.jasper";
    InputStream is = new FileInputStream(reportName);
    Class.forName("com.mysql.jdbc.Driver");
    Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/js001?user=root&password=admin");
    JasperPrint jasperPrint = JasperFillManager.fillReport(is, null, con);
    JasperViewer jv = new JasperViewer(jasperPrint);
    jv.setVisible(true);
} catch (Exception ex) {
}

The exception is:

Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory at net.sf.jasperreports.engine.util.JRLoader.(JRLoader.java:68) at net.sf.jasperreports.engine.JRPropertiesUtil.loadProperties(JRPropertiesUtil.java:99) at net.sf.jasperreports.engine.DefaultJasperReportsContext.initProperties(DefaultJasperReportsContext.java:94) at net.sf.jasperreports.engine.DefaultJasperReportsContext.(DefaultJasperReportsContext.java:71) at net.sf.jasperreports.engine.DefaultJasperReportsContext.(DefaultJasperReportsContext.java:59) at net.sf.jasperreports.engine.JasperFillManager.getDefaultInstance(JasperFillManager.java:85) at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:824) at job.NewClass.jButton2ActionPerformed(NewClass.java:64) at job.NewClass.access$000(NewClass.java:21) at job.NewClass$1.actionPerformed(NewClass.java:42) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995) at javax.swing.Abst ractButton$Handler.actionPerformed(AbstractButton.java:2318) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236) at java.awt.Component.processMouseEvent(Component.java:6134) at javax.swing.JComponent.processMouseEvent(JComponent.java:3265) at java.awt.Component.processEvent(Component.java:5899) at java.awt.Container.processEvent(Container.java:2023) at java.awt.Component.dispatchEventImpl(Component.java:4501) at java.awt.Container.dispatchEventImpl(Container.java:2081) at java.awt.Component.dispatchEvent(Component.java:4331) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4301) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3965) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3895) at java.awt.Container.dispatchEventImpl(Container.java:206 7) at java.awt.Window.dispatchEventImpl(Window.java:2458) at java.awt.Component.dispatchEvent(Component.java:4331) at java.awt.EventQueue.dispatchEvent(EventQueue.java:599) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadC lass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) ... 35 more

Answer 1

Commons Logging needs to be added to the classpath. If you're working in a regular Netbeans project (and not in a Maven project in Netbeans) check out this SO question or this article that explain how to add libraries to a project.

If on the other hand you're working on a Maven project using Netbeans, Commons logging has to be added as a dependency. How that's done can be found here - basically it's a rightclick on the libraries node in the project tree, add dependency, enter artefact details or use the built-in search assistant to locate the correct artefact in the Maven repository.