java - 剪辑无法在Java中播放声音

Question

以下代码既不会发出声音，也不会打印堆栈跟踪。如果我进行调试，则跳过clip.start()将使声音播放一秒钟。有人知道我在做什么错吗？谢谢。

import java.net.URL;

import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.sound.sampled.DataLine;

public class Driver {

    public static void main(String[] args) {
        try {
            URL url = new URL("http://api.voicerss.org/?KEY=b1a362bc35014e9c9dcd8d3536aac7ad&SRC=This%20is%20a%20test&HL=en-gb&C=WAV&F=48khz_16bit_stereo");
            AudioInputStream sound = AudioSystem.getAudioInputStream(url);
            DataLine.Info info = new DataLine.Info (Clip.class, sound.getFormat());
            Clip clip = (Clip) AudioSystem.getLine(info);
            clip.open(sound);
            clip.start();
            while(clip.isRunning());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

同样，将 while(clip.isRunning(());更改为 while(clip.isRunning()) System.out.println("running");不会导致任何输出。

Answer 1

这是关于线程的问题。
当我尝试在事件调度线程中运行它时，它运行正常。
您可以从以下讨论中了解EDT:

Why do I need Swing Utilities and how do I use it?

注意:我希望其他人可以为此找到更好的解决方案。

import java.io.IOException;
import java.net.URL;

import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.UnsupportedAudioFileException;
import javax.swing.SwingUtilities;

public class Driver {

    @SuppressWarnings("empty-statement")
    public static void main(String[] args) {
        try {
            URL url = new URL("http://api.voicerss.org/?KEY=b1a362bc35014e9c9dcd8d3536aac7ad&SRC=Your%20a%20fag&HL=en-gb&C=WAV&F=48khz_16bit_stereo");
            AudioInputStream sound = AudioSystem.getAudioInputStream(url);
            DataLine.Info info = new DataLine.Info (Clip.class, sound.getFormat());
            final Clip clip = (Clip)AudioSystem.getLine(info);
            clip.open(sound);
            clip.setFramePosition(0);
            SwingUtilities.invokeLater(new Runnable() {
                @Override
                public void run() {
                    clip.start();
                }
            });

        } catch (IOException | LineUnavailableException | UnsupportedAudioFileException e) {
            e.printStackTrace();
        }
    }

}