我正在尝试在vlcj中指定单个MRL我发布了一个问题，但答案并不完全正确 这个代码我从github for vlcj toke我更改了MRL但是它在最后没有工作错误信息
/*
* This file is part of VLCJ.
*
* VLCJ is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* VLCJ is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with VLCJ. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2009, 2010, 2011, 2012, 2013, 2014 Caprica Software Limited.
*/
package uk.co.caprica.vlcj.test.aspect;
import java.awt.BorderLayout;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.DefaultListCellRenderer;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.border.CompoundBorder;
import javax.swing.border.EmptyBorder;
import javax.swing.border.LineBorder;
import uk.co.caprica.vlcj.player.MediaPlayerFactory;
import uk.co.caprica.vlcj.player.embedded.EmbeddedMediaPlayer;
import uk.co.caprica.vlcj.player.embedded.videosurface.CanvasVideoSurface;
import uk.co.caprica.vlcj.test.VlcjTest;
/**
* A test for video aspect ratio.
* <p>
* The red colouring on the video canvas shows the unused portion of the video surface - the client
* application can resize the video canvas to reclaim this unused area without affecting the video
* size/aspect (ordinarily resizing would stretch or compress the video).
* <p>
* Any black area shown on the top/left/bottom/right of the video are the black bars present in the
* source material.
* <p>
* The panel with the white background is simply to provide context.
*/
public class AspectTest extends VlcjTest {
/**
* The standard aspect ratios.
*/
private static final String[][] ASPECTS = {
{"<choose...>", null },
{ "16:10", "16:10" },
{ "16:9" , "16:9" },
{ "1.85:1" , "185:100"},
{ "2.21:1" , "221:100"},
{ "2.35:1" , "235:100"},
{ "2.39:1" , "239:100"},
{ "5:3" , "5:3" },
{ "4:3" , "4:3" },
{ "5:4" , "5:4" },
{ "1:1" , "1:1" }
};
private static final String HELP_TEXT =
"<html>Select a standard apsect ratio from the list box, or enter a custom aspect ratio and press enter/return.<br/><br/>" +
"For the custom aspect ratio, use:<ul>" +
"<li>W:H, e.g. 16:9 and the values must be integers</li>" +
"</ul></html>";
private MediaPlayerFactory factory;
private EmbeddedMediaPlayer mediaPlayer;
private CanvasVideoSurface videoSurface;
private JFrame frame;
private JPanel contentPane;
private JPanel videoPane;
private Canvas videoCanvas;
private JPanel controlsPane;
private JLabel standardAspectLabel;
private JComboBox standardAspectComboBox;
private JLabel customAspectLabel;
private JTextField customAspectTextField;
private JButton pauseButton;
private JLabel helpText;
public static void main(String[] args) throws Exception {
if(args.length != 1) {
System.out.println("Specify a single MRL");
System.exit(0);
}
setLookAndFeel();
final String mrl = args[0];
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new AspectTest().start(file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4);
}
});
}
@SuppressWarnings("serial")
public AspectTest() {
factory = new MediaPlayerFactory();
mediaPlayer = factory.newEmbeddedMediaPlayer();
videoPane = new JPanel();
videoPane.setBorder(new CompoundBorder(new LineBorder(Color.black, 2), new EmptyBorder(16, 16, 16, 16)));
videoPane.setLayout(new BorderLayout());
videoPane.setBackground(Color.white);
videoCanvas = new Canvas();
videoCanvas.setBackground(Color.red);
videoCanvas.setSize(720, 350);
videoPane.add(videoCanvas, BorderLayout.CENTER);
videoSurface = factory.newVideoSurface(videoCanvas);
mediaPlayer.setVideoSurface(videoSurface);
standardAspectLabel = new JLabel("Standard Aspect:");
standardAspectLabel.setDisplayedMnemonic('s');
standardAspectComboBox = new JComboBox(ASPECTS);
standardAspectComboBox.setEditable(false);
standardAspectComboBox.setRenderer(new DefaultListCellRenderer() {
@Override
public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
JLabel l = (JLabel)super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
String[] val = (String[])value;
l.setText(val[0]);
return l;
}
});
standardAspectLabel.setLabelFor(standardAspectComboBox);
customAspectLabel = new JLabel("Custom Aspect:");
customAspectLabel.setDisplayedMnemonic('c');
customAspectTextField = new JTextField(10);
customAspectTextField.setFocusAccelerator('c');
pauseButton = new JButton("Pause");
pauseButton.setMnemonic('p');
controlsPane = new JPanel();
controlsPane.setLayout(new BoxLayout(controlsPane, BoxLayout.X_AXIS));
controlsPane.add(standardAspectLabel);
controlsPane.add(Box.createHorizontalStrut(4));
controlsPane.add(standardAspectComboBox);
controlsPane.add(Box.createHorizontalStrut(12));
controlsPane.add(customAspectLabel);
controlsPane.add(Box.createHorizontalStrut(4));
controlsPane.add(customAspectTextField);
controlsPane.add(Box.createHorizontalStrut(4));
controlsPane.add(pauseButton);
helpText = new JLabel(HELP_TEXT);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(16, 16, 16, 16));
contentPane.setLayout(new BorderLayout(16, 16));
contentPane.add(helpText, BorderLayout.NORTH);
contentPane.add(videoPane, BorderLayout.CENTER);
contentPane.add(controlsPane, BorderLayout.SOUTH);
frame = new JFrame("vlcj aspect ratio test");
frame.setIconImage(new ImageIcon(getClass().getResource("/icons/vlcj-logo.png")).getImage());
frame.setContentPane(contentPane);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
standardAspectComboBox.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
Object selectedItem = standardAspectComboBox.getSelectedItem();
if(selectedItem != null) {
String[] value = (String[])selectedItem;
mediaPlayer.setAspectRatio(value[1]);
}
}
});
customAspectTextField.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
String value = customAspectTextField.getText();
mediaPlayer.setAspectRatio(value);
}
});
pauseButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
mediaPlayer.pause();
}
});
}
private void start(String mrl) {
frame.setVisible(true);
mediaPlayer.playMedia(mrl);
}
}
错误消息
C:\Users\isslam\Documents\NetBeansProjects\aspicts-vlcj\src\uk\co\caprica\vlcj\test\aspect\AspectTest.java:116: error: ')' expected
new AspectTest().start(file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4);
C:\Users\isslam\Documents\NetBeansProjects\aspicts-vlcj\src\uk\co\caprica\vlcj\test\aspect\AspectTest.java:116: error: illegal character: \92
new AspectTest().start(file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4);
C:\Users\isslam\Documents\NetBeansProjects\aspicts-vlcj\src\uk\co\caprica\vlcj\test\aspect\AspectTest.java:116: error: illegal character: \92
new AspectTest().start(file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4);
C:\Users\isslam\Documents\NetBeansProjects\aspicts-vlcj\src\uk\co\caprica\vlcj\test\aspect\AspectTest.java:116: error: illegal character: \92
new AspectTest().start(file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4);
C:\Users\isslam\Documents\NetBeansProjects\aspicts-vlcj\src\uk\co\caprica\vlcj\test\aspect\AspectTest.java:116: error: illegal character: \92
new AspectTest().start(file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4);
C:\Users\isslam\Documents\NetBeansProjects\aspicts-vlcj\src\uk\co\caprica\vlcj\test\aspect\AspectTest.java:116: error: illegal character: \92
new AspectTest().start(file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4);
C:\Users\isslam\Documents\NetBeansProjects\aspicts-vlcj\src\uk\co\caprica\vlcj\test\aspect\AspectTest.java:116: error: illegal character: \92
new AspectTest().start(file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4);
C:\Users\isslam\Documents\NetBeansProjects\aspicts-vlcj\src\uk\co\caprica\vlcj\test\aspect\AspectTest.java:116: error: illegal character: \92
new AspectTest().start(file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4);
C:\Users\isslam\Documents\NetBeansProjects\aspicts-vlcj\src\uk\co\caprica\vlcj\test\aspect\AspectTest.java:116: error: illegal character: \92
new AspectTest().start(file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4);
C:\Users\isslam\Documents\NetBeansProjects\aspicts-vlcj\src\uk\co\caprica\vlcj\test\aspect\AspectTest.java:116: error: illegal character: \92
new AspectTest().start(file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4);
C:\Users\isslam\Documents\NetBeansProjects\aspicts-vlcj\src\uk\co\caprica\vlcj\test\aspect\AspectTest.java:116: error: not a statement
new AspectTest().start(file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4);
C:\Users\isslam\Documents\NetBeansProjects\aspicts-vlcj\src\uk\co\caprica\vlcj\test\aspect\AspectTest.java:116: error: illegal character: \92
new AspectTest().start(file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4);
C:\Users\isslam\Documents\NetBeansProjects\aspicts-vlcj\src\uk\co\caprica\vlcj\test\aspect\AspectTest.java:116: error: illegal character: \92
new AspectTest().start(file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4);
C:\Users\isslam\Documents\NetBeansProjects\aspicts-vlcj\src\uk\co\caprica\vlcj\test\aspect\AspectTest.java:116: error: not a statement
new AspectTest().start(file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4);
C:\Users\isslam\Documents\NetBeansProjects\aspicts-vlcj\src\uk\co\caprica\vlcj\test\aspect\AspectTest.java:116: error: illegal character: \92
new AspectTest().start(file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4);
C:\Users\isslam\Documents\NetBeansProjects\aspicts-vlcj\src\uk\co\caprica\vlcj\test\aspect\AspectTest.java:116: error: not a statement
new AspectTest().start(file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4);
C:\Users\isslam\Documents\NetBeansProjects\aspicts-vlcj\src\uk\co\caprica\vlcj\test\aspect\AspectTest.java:116: error: ';' expected
new AspectTest().start(file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4);
17 errors
C:\Users\isslam\Documents\NetBeansProjects\aspicts-vlcj\nbproject\build-impl.xml:920: The following error occurred while executing this line:
C:\Users\isslam\Documents\NetBeansProjects\aspicts-vlcj\nbproject\build-impl.xml:260: Compile failed; see the compiler error output for details.
BUILD FAILED (total time: 0 seconds)
答案 0 :(得分：0)
真的？
new AspectTest().start(file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4);
应该是这样的：
new AspectTest().start("file:\\\\C:\\Users\\isslam\\Downloads\\gg.mp4");