我正在使用 swing 和 vlcj 制作桌面应用程序。我把框架分成了两个部分的一面webbrowser，它有几个视频的url，另一个面板vlcj在mediaplayer中播放那个url。您选择的第一个网址工作正常并显示在播放器中。问题是，在我选择另一个网址之后，我想要将第一个网址替换为第二个网址。处理第一个媒体然后播放第二个媒体的正确方法是什么？第二个问题是我在面板中设置了vlcj但是它在vlc直接3d输出中打开视频你能告诉我它为什么不在面板画布中打开。 这是我尝试的代码：
import com.sun.jna.Native;
import com.sun.jna.NativeLibrary;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.application.Platform;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.concurrent.Worker;
import javafx.embed.swing.JFXPanel;
import javafx.scene.Scene;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSeparator;
import javax.swing.JSlider;
import javax.swing.JSplitPane;
import javax.swing.SwingUtilities;
import javax.swing.Timer;
import javax.swing.event.ChangeEvent;
import uk.co.caprica.vlcj.binding.LibVlc;
import uk.co.caprica.vlcj.binding.LibVlcConst;
import uk.co.caprica.vlcj.discovery.NativeDiscovery;
import uk.co.caprica.vlcj.player.MediaPlayer;
import uk.co.caprica.vlcj.player.MediaPlayerEventAdapter;
import uk.co.caprica.vlcj.player.MediaPlayerFactory;
import uk.co.caprica.vlcj.player.embedded.EmbeddedMediaPlayer;
import uk.co.caprica.vlcj.runtime.RuntimeUtil;
/**
*
* @author biznis
*/
public class NewJFrame extends javax.swing.JFrame {
JScrollPane scrollableTextArea;
/**
* Creates new form NewJFrame
*/
public NewJFrame() {
initComponents();
//JFrame jFrame2 = new JFrame("vlcj Tutorial");
MediaPlayerFactory mediaPlayerFactory = new MediaPlayerFactory();
canvas1.setBackground(Color.black);
jPanel2.setLayout(new BorderLayout());
jPanel2.setPreferredSize(new Dimension(200,300));
jPanel2.add(canvas1, BorderLayout.CENTER);
// frame.add(jPanel2, BorderLayout.NORTH);
// frame.add(p, BorderLayout.CENTER);
EmbeddedMediaPlayer mediaPlayer = mediaPlayerFactory.newEmbeddedMediaPlayer();
mediaPlayer.setVideoSurface(mediaPlayerFactory.newVideoSurface(canvas1));
//jPanel2.setLayout(new java.awt.CardLayout());
//jFrame2.setVisible(true);
//jFrame2.setLocation(100, 100);
JPanel p1 = new JPanel();
p1.setBounds(100, 900, 105, 200);
jPanel2.add(p1, BorderLayout.SOUTH);
JButton playbutton = new JButton();
playbutton.setIcon(new ImageIcon("C:/Users/biznis/Desktop/Newspaper/sangbadpratidin/d/play.png"));
// this.setSize(800,450);
playbutton.setBounds(50, 50, 150, 100);
playbutton.setToolTipText("Play");
p1.add(playbutton);
JButton pausebutton = new JButton();
pausebutton.setIcon(new ImageIcon("C:/Users/biznis/Desktop/Newspaper/sangbadpratidin/d/pause.png"));
pausebutton.setToolTipText("pause");
pausebutton.setBounds(80, 50, 150, 100);
p1.add(pausebutton);
JButton previousbutton = new JButton();
previousbutton.setIcon(new ImageIcon("C:/Users/biznis/Desktop/Newspaper/sangbadpratidin/d/previous.png"));
previousbutton.setBounds(90, 50, 150, 100);
previousbutton.setToolTipText("Skip back");
p1.add(previousbutton);
JButton nextbutton = new JButton();
nextbutton.setIcon(new ImageIcon("C:/Users/biznis/Desktop/Newspaper/sangbadpratidin/d/next.png"));
nextbutton.setBounds(90, 50, 150, 100);
nextbutton.setToolTipText(" Skip forward");
p1.add(nextbutton);
JButton captureButton = new JButton();
captureButton.setIcon(new ImageIcon("C:/Users/biznis/Desktop/Newspaper/sangbadpratidin/d/icons8-unsplash-26.png"));
captureButton.setToolTipText("capture");
captureButton.setBounds(80, 50, 150, 100);
p1.add(captureButton);
JSlider volumeSlider = new JSlider();
volumeSlider.setMinimum(LibVlcConst.MIN_VOLUME);
volumeSlider.setMaximum(LibVlcConst.MAX_VOLUME);
volumeSlider.setPreferredSize(new Dimension(100, 40));
volumeSlider.setToolTipText("Change volume");
p1.add(volumeSlider);
JSlider js = new JSlider();
p1.add(js);
// mediaPlayer.playMedia("D:\\test\\192.168.2.201_01_20180124_153000.avi");
js.addMouseMotionListener(new MouseMotionAdapter() {
public void mouseDragged(MouseEvent e) {
if (js.getValue() / 100 < 1) {
mediaPlayer.setPosition((float) js.getValue() / 100);
}
}
});
Timer timer = new Timer(100, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
js.setValue(Math.round(mediaPlayer.getPosition() * 100));
}
});
timer.start();
pausebutton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
mediaPlayer.pause();
// or mediaPlayer.pause() depending on what works.
final long time = mediaPlayer.getTime();
System.out.println(time);
}
});
playbutton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
mediaPlayer.play();
}
});
previousbutton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
mediaPlayer.skip(-10000);
}
});
nextbutton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
mediaPlayer.skip(1000);
}
});
volumeSlider.addChangeListener(new javax.swing.event.ChangeListener() {
@Override
public void stateChanged(ChangeEvent e) {
mediaPlayer.setVolume(volumeSlider.getValue());
}
});
captureButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
File file3 = new File("C:/Test/");
mediaPlayer.saveSnapshot(file3);
try {
BufferedImage image3 = ImageIO.read(file3);
} catch (IOException ex) {
Logger.getLogger(NewJFrame.class.getName()).log(Level.SEVERE, null, ex);
}
}
});
JFXPanel jfxPanel = new JFXPanel();
jPanel1.add(jfxPanel);
// Creation of scene and future interactions with JFXPanel
// should take place on the JavaFX Application Thread
Platform.runLater(() -> {
WebView webView = new WebView();
WebEngine wb1 = webView.getEngine();
jfxPanel.setScene(new Scene(webView));
wb1.load("");
wb1.getLoadWorker().stateProperty()
.addListener(new ChangeListener<Worker.State>() {
@Override
public void changed(ObservableValue ov, Worker.State oldState, Worker.State newState) {
if (newState == Worker.State.SCHEDULED) {
frame.setTitle(wb1.getLocation());
String trgurl = wb1.getLocation();
System.out.println(trgurl);
if (trgurl.matches("(.*)video=(.*)")) {
int n = trgurl.indexOf("video=");
//String str1 = Integer.toString(n);
System.out.println(n + 6);
int len = trgurl.length();
System.out.println("string length is: " + trgurl.length());
System.out.println(trgurl.substring(n+6,len));
String find = "file:" +trgurl.substring(n+6,len);
System.out.println(find);
// mediaPlayer.setVideoSurface(mediaPlayerFactory.newVideoSurface(canvas1));
mediaPlayer.prepareMedia(find);
mediaPlayer.start();
JScrollPane scrollableTextArea = new JScrollPane(jPanel2);
scrollableTextArea.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
scrollableTextArea.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
}
}
}
});
});
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jPanel2 = new javax.swing.JPanel();
jPanel1 = new javax.swing.JPanel();
jPanel1.setPreferredSize(new Dimension(200, 300));
canvas1 = new java.awt.Canvas();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setPreferredSize(new java.awt.Dimension(500, 300));
getContentPane().setLayout(new java.awt.GridLayout());
getContentPane().add(jPanel2);
jPanel1.add(canvas1);
getContentPane().add(jPanel1);
// getContentPane().add(sp);
pack();
}// </editor-fold>
/**
* @param args the command line arguments
*/
public static void main(final String[] args) {
/* Set the Nimbus look and feel */
new NativeDiscovery().discover();
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
frame = new NewJFrame();
frame.setVisible(true);
}
});
}
private static NewJFrame frame;
// Variables declaration - do not modify
private java.awt.Canvas canvas1;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
// End of variables declaration
}
在jpanel1 im openning vlcj和jpanel2 webview中。请帮忙。提前谢谢。
当我点击视频的下一个链接时，这是异常日志：
Exception in thread "JavaFX Application Thread" java.lang.IllegalStateException: The video surface component must be displayable
at uk.co.caprica.vlcj.player.embedded.videosurface.CanvasVideoSurface.attach(CanvasVideoSurface.java:75)
at uk.co.caprica.vlcj.player.embedded.DefaultEmbeddedMediaPlayer.attachVideoSurface(DefaultEmbeddedMediaPlayer.java:156)
at uk.co.caprica.vlcj.player.embedded.DefaultEmbeddedMediaPlayer.onBeforePlay(DefaultEmbeddedMediaPlayer.java:315)
at uk.co.caprica.vlcj.player.DefaultMediaPlayer.play(DefaultMediaPlayer.java:705)
at uk.co.caprica.vlcj.player.DefaultMediaPlayer.playMedia(DefaultMediaPlayer.java:222)
at javaapplication6.NewJFrame$9.changed(NewJFrame.java:231)
at javaapplication6.NewJFrame$9.changed(NewJFrame.java:211)
at com.sun.javafx.binding.ExpressionHelper$SingleChange.fireValueChangedEvent(ExpressionHelper.java:182)
at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:81)
at javafx.beans.property.ReadOnlyObjectPropertyBase.fireValueChangedEvent(ReadOnlyObjectPropertyBase.java:74)
at javafx.beans.property.ReadOnlyObjectWrapper.fireValueChangedEvent(ReadOnlyObjectWrapper.java:102)
at javafx.beans.property.ObjectPropertyBase.markInvalid(ObjectPropertyBase.java:112)
at javafx.beans.property.ObjectPropertyBase.set(ObjectPropertyBase.java:146)
at javafx.scene.web.WebEngine$LoadWorker.updateState(WebEngine.java:1287)
at javafx.scene.web.WebEngine$LoadWorker.dispatchLoadEvent(WebEngine.java:1388)
at javafx.scene.web.WebEngine$LoadWorker.access$1200(WebEngine.java:1280)
at javafx.scene.web.WebEngine$PageLoadListener.dispatchLoadEvent(WebEngine.java:1267)
at com.sun.webkit.WebPage.fireLoadEvent(WebPage.java:2499)
at com.sun.webkit.WebPage.fwkFireLoadEvent(WebPage.java:2343)
at com.sun.webkit.WebPage.twkProcessMouseEvent(Native Method)
at com.sun.webkit.WebPage.dispatchMouseEvent(WebPage.java:807)
at javafx.scene.web.WebView.processMouseEvent(WebView.java:1045)
at javafx.scene.web.WebView.lambda$registerEventHandlers$32(WebView.java:1168)
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3757)
at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
at com.sun.javafx.tk.quantum.EmbeddedScene.lambda$null$293(EmbeddedScene.java:256)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.EmbeddedScene.lambda$mouseEvent$294(EmbeddedScene.java:244)
at com.sun.javafx.application.PlatformImpl.lambda$null$172(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$173(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$147(WinApplication.java:177)
at java.lang.Thread.run(Thread.java:748)
答案 0 :(得分：0)
Thnx我通过左右面板和滚动窗格解决了这个问题。
import java.awt.*;
import javafx.application.Platform;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.concurrent.Worker;
import javafx.embed.swing.JFXPanel;
import javafx.scene.Scene;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;
import javax.swing.*;
import uk.co.caprica.vlcj.component.EmbeddedMediaPlayerComponent;
import uk.co.caprica.vlcj.discovery.NativeDiscovery;
public class MyTestClass extends JFrame {
EmbeddedMediaPlayerComponent playerCmpt;
public MyTestClass() {
new NativeDiscovery().discover();
EmbeddedMediaPlayerComponent playerCmpt = new EmbeddedMediaPlayerComponent();
playerCmpt.setPreferredSize(new Dimension(200, 100));
JPanel leftPane = new JPanel();
leftPane.setPreferredSize(new Dimension(100, 100));
JFXPanel jfxPanel = new JFXPanel();
leftPane.add(jfxPanel);
//jPanel1.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
//jPanel1.setBorder(new EmptyBorder(20, 20, 20, 20));
// Creation of scene and future interactions with JFXPanel
// should take place on the JavaFX Application Thread
Platform.runLater(() -> {
WebView webView = new WebView();
WebEngine wb1 = webView.getEngine();
jfxPanel.setScene(new Scene(webView));
wb1.load("");
wb1.getLoadWorker().stateProperty()
.addListener(new ChangeListener<Worker.State>() {
@Override
public void changed(ObservableValue ov, Worker.State oldState, Worker.State newState) {
if (newState == Worker.State.SCHEDULED) {
// this.setTitle(wb1.getLocation());
String trgurl = wb1.getLocation();
System.out.println(trgurl);
if (trgurl.matches("(.*)video=(.*)")) {
int n = trgurl.indexOf("video=");
//String str1 = Integer.toString(n);
System.out.println(n + 6);
int len = trgurl.length();
System.out.println("string length is: " + trgurl.length());
System.out.println(trgurl.substring(n+6,len));
String find = "file:" +trgurl.substring(n+6,len);
System.out.println(find);
// mediaPlayer.setVideoSurface(mediaPlayerFactory.newVideoSurface(canvas1));
// mediaPlayer.release();
playerCmpt.getMediaPlayer().playMedia(find);
// mediaPlayer.stop();
// mediaPlayer.prepareMedia(find);
// mediaPlayer.stop();
//mediaPlayer.prepareMedia(find);
//JScrollPane scrollableTextArea = new JScrollPane(jPanel2);
//scrollableTextArea.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
//scrollableTextArea.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
}
}
}
});
});
JPanel playerPanel = new JPanel(new BorderLayout());
playerPanel.add(playerCmpt);
JSplitPane mainSplit = new JSplitPane(
JSplitPane.HORIZONTAL_SPLIT,
leftPane, playerPanel);
playerPanel.setMinimumSize(new Dimension(10, 10));
this.add(mainSplit);
this.pack();
this.setVisible(true);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//playerCmpt.getMediaPlayer().playMedia("D:\\test\\192.168.2.201_01_20180124_153000.avi");
}
public static void main(String[] args) {
new MyTestClass();
}
}