JLabel hyperlink to open browser at correct URL

I need to create a label with Java Swing that is clickable and able to open the default browser on the desktop and redirect it to a specific url. My code is able to open up the browser but not redirecting it to the correct url (the default home page is loaded). My test code:

 import java.awt.*;
 import javax.swing.*;
 import java.awt.event.*;
 import java.io.IOException;
 import java.net.*;

 public class LinkTest extends JFrame {

 public LinkTest() {
 JPanel p = new JPanel();

 JLabel link = new JLabel("Click here");
 link.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
 link.addMouseListener(new MouseAdapter() {
   public void mouseClicked(MouseEvent e) {
      if (e.getClickCount() > 0) {
          if (Desktop.isDesktopSupported()) {
                Desktop desktop = Desktop.getDesktop();
                try {
                    URI uri = new URI("http://www.bbc.co.uk");
                    desktop.browse(uri);
                } catch (IOException ex) {
                    ex.printStackTrace();
                } catch (URISyntaxException ex) {
                    ex.printStackTrace();
                }
        }
      }
   }
});
p.add(link);
getContentPane().add(BorderLayout.NORTH, p);
 }

 public static void main(String[] args) {
  LinkTest linkTest = new LinkTest();
  linkTest.setSize(640,100);
  linkTest.show();
 }
}

How can I have a default browser open and redirect to the correct URL with Java Swing?

Easy, just copy this method to your code with the right parameters. Don't forget to add the imports needed.

import java.awt.Cursor;
import java.awt.Desktop;
import java.awt.EventQueue;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;


    private void goWebsite(JLabel website, final String url, String text) {
        website.setText("<html> Website : <a href=\"\">"+text+"</a></html>");
        website.setCursor(new Cursor(Cursor.HAND_CURSOR));
        website.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                    try {
                            Desktop.getDesktop().browse(new URI(url));
                    } catch (URISyntaxException | IOException ex) {
                            //It looks like there's a problem
                    }
            }
        });
    }

 public void mouseClicked(MouseEvent e) {
      if (e.getClickCount() > 0) {
          if (Desktop.isDesktopSupported()) {
                                try {
                    String osName = System.getProperty("os.name");
                    String urlPath = "http://download.oracle.com/javase/1.4.2/docs/api/java/text/SimpleDateFormat.html";

                    if (osName.startsWith("Windows"))
                        Runtime.getRuntime().exec("rundll32 url.dll,FileProtocolHandler " + urlPath);
                    else {
                        String[] browsers = { "firefox", "opera", "konqueror", "epiphany", "mozilla", "netscape" };
                        String browser = null;
                        for (int count = 0; count < browsers.length && browser == null; count++)
                            if (Runtime.getRuntime().exec(new String[] { "which", browsers[count] }).waitFor() == 0)
                                browser = browsers[count];
                        Runtime.getRuntime().exec(new String[] { browser, urlPath });
                    }
                }
                catch (Exception e) {
                    JOptionPane.showMessageDialog(null, "Error in opening browser" + ":\n" + e.getLocalizedMessage());
                }
        }
      }
   }
});

Here is a code sample for what you need.

Your code worked fine for me running on a Mac with Safari as my default browser.

What browser are you using and what OS are you running on?

COD3BOY

This seems to be working, Here is a great alternative worth trying by McDowell, using a JButton,

public static void main(String[] args) throws URISyntaxException {
    final URI uri = new URI("http://java.sun.com");
    class OpenUrlAction implements ActionListener {
      @Override public void actionPerformed(ActionEvent e) {
        open(uri);
      }
    }
    JFrame frame = new JFrame("Links");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(100, 400);
    Container container = frame.getContentPane();
    container.setLayout(new GridBagLayout());
    JButton button = new JButton();
    button.setText("<HTML>Click the <FONT color=\"#000099\"><U>link</U></FONT>"
        + " to go to the Java website.</HTML>");
    button.setHorizontalAlignment(SwingConstants.LEFT);
    button.setBorderPainted(false);
    button.setOpaque(false);
    button.setBackground(Color.WHITE);
    button.setToolTipText(uri.toString());
    button.addActionListener(new OpenUrlAction());
    container.add(button);
    frame.setVisible(true);
  }

  private static void open(URI uri) {
    if (Desktop.isDesktopSupported()) {
      try {
        Desktop.getDesktop().browse(uri);
      } catch (IOException e) { /* TODO: error handling */ }
    } else { /* TODO: error handling */ }
  }

Found the problem: on Ubuntu 12.10 I have installed "libgnome2" and it is working perfectly now.

来源：https://stackoverflow.com/questions/8669350/jlabel-hyperlink-to-open-browser-at-correct-url

标签

java

swing

browser

hyperlink

jlabel