ciao a tutti. sono alle prese con java e crystal report 11 in ambiente netbeans. riesco a visualizzare un report con i dati presenti all'interno, quando invece vado a riempire il report con i dati presenti su un database viene fuori qst errore "errore nella ricerca del nome JNDI (nome server)". Il database che uso è sqlexpress 2008 r2.

codice:
import com.crystaldecisions.sdk.occa.report.lib.*;
import javax.swing.*;

public class JRCViewReportLogon {

	private static final String REPORT_NAME = "C:\\lavoro\\report.rpt";

	//Database credentials for the report's datasource.
	private static final String USERNAME = "xx";
	private static final String PASSWORD = "xxxx";

	public static void launchApplication() {

		try {
			com.crystaldecisions.sdk.occa.report.application.ReportClientDocument reportClientDoc = new com.crystaldecisions.sdk.occa.report.application.ReportClientDocument();
			reportClientDoc.open(REPORT_NAME, 0);
                        reportClientDoc.getDatabaseController().logon(USERNAME, PASSWORD);
			new ReportViewerFrame(reportClientDoc);

		}
		catch(ReportSDKException ex) {
			System.out.println(ex);
		}
		catch(Exception ex) {
			System.out.println(ex);
		}

	}

	public static void main(String [] args) {
		SwingUtilities.invokeLater(new Runnable() {
			public void run() {
				launchApplication();
			}
		});

	}

}

import com.crystaldecisions.sdk.occa.report.lib.*;
import com.crystaldecisions.ReportViewer.*;

//Java imports.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ReportViewerFrame extends JFrame {

	//Initial window frame properties.
	private final int XPOS = 75;
	private final int YPOS = 50;
	private final int WIDTH = 750;
	private final int HEIGHT = 600;

	//Crystal Report thick-client viewer object that will be embedded into the JFrame.
	private ReportViewerBean reportViewer = new ReportViewerBean();
	//This report will be viewed in the thick-client viewer.
	private com.crystaldecisions.sdk.occa.report.application.ReportClientDocument reportClientDoc = new com.crystaldecisions.sdk.occa.report.application.ReportClientDocument();

	/**
	 * Constructs and launches the new frame.
	 */
	public ReportViewerFrame(com.crystaldecisions.sdk.occa.report.application.ReportClientDocument reportClientDoc) throws Exception {

		//Initialize frame properties.
		this.setResizable(true);
		this.setLocation(XPOS, YPOS);
		this.setSize(WIDTH, HEIGHT);
		this.setTitle("Crystal Report Java Viewer");

		//Add GUI components to the frame including the ReportViewerBean.
		addComponents();

		//Add GUI listeners to the frame.
		addListeners();

		//Set the report that the ReportViewerBean will display.
		this.reportClientDoc = reportClientDoc;
		reportViewer.setReportSource(reportClientDoc.getReportSource());
		reportViewer.init();
		reportViewer.start();

		//Display the frame.
		this.setVisible(true);

	}

	/**
	 * Utility function for adding GUI components to frame.  Created to separate
	 * the constructor logic of the frame from logic for adding visual
	 * components.  This function will add the ReportViewerBean to the frame.
	 */
	private void addComponents() {

	  	//Create new panel and add the ReportViewerBean to it.
		Container cp = getContentPane();
		cp.setLayout(new BorderLayout());
		cp.add(reportViewer);

	}

	/**
	 * Utility function for adding GUI listeners to the frame.  Created to separate
	 * the constructor logic of the frame for adding listeners.
	 */
	private void addListeners() {

		//This window listener will capture the event of the ReportViewerFrame being closed.  If this
		//frame is closed, then it is a good practice to then close the report being displayed, which the
		//quit() method will handle.
		addWindowListener(new WindowAdapter() {
			public void windowClosing(WindowEvent e) {
				quit();
			}
		});

	}

	/**
	 * Close frame and report being viewed.
	 */
	public void quit() {

	  	try {
	  		//Release report.
	  		reportClientDoc.close();
			System.exit(0);
	  	}
	  	catch(ReportSDKException ex) {
	  		ex.printStackTrace();
	  	}

	}
}
sono due classi che ho trovato sul web e ho cambiato semplicemente i dati relativi al database. qualche idea? Grazie in anticipo.