java - JAVA中.wav文件的声音随机停止

Question

我试图在java中创建一个播放某些声音的类，但是声音在随机时刻停止而不是在结束时停止。它为什么要这么做？预先感谢!

这是我的代码:

import java.io.File;

import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.sound.sampled.Line;
import javax.sound.sampled.LineEvent;
import javax.sound.sampled.LineListener;
import javax.swing.JDialog;
import javax.swing.JFileChooser;

public class CoreJavaSound extends Object implements LineListener {
File soundFile;

JDialog playingDialog;

Clip clip;

public static void main(String[] args) throws Exception {
PlayBow();

}

public CoreJavaSound(String fileName) throws Exception {
JFileChooser chooser = new JFileChooser();

soundFile = new File(fileName);


System.out.println("Playing " + soundFile.getName());

Line.Info linfo = new Line.Info(Clip.class);
Line line = AudioSystem.getLine(linfo);
clip = (Clip) line;
clip.addLineListener(this);
AudioInputStream ais = AudioSystem.getAudioInputStream(soundFile);
clip.open(ais);
clip.start();
}

@Override
public void update(LineEvent le) {
LineEvent.Type type = le.getType();
if (type == LineEvent.Type.OPEN) {
  System.out.println("OPEN");
} else if (type == LineEvent.Type.CLOSE) {
  System.out.println("CLOSE");
  System.exit(0);
} else if (type == LineEvent.Type.START) {
  System.out.println("START");
  playingDialog.setVisible(true);
} else if (type == LineEvent.Type.STOP) {
  System.out.println("STOP");
  playingDialog.setVisible(false);
  clip.close();
}
}

public static void PlayBow() throws Exception
{
CoreJavaSound s = new CoreJavaSound("Bow.wav");
}
}

一切正常，除了声音在大约 1 秒后停止工作(而文件为 5 秒)...

Answer 1

剪辑在后台线程上启动，不是阻塞调用。它在后台播放。因此程序终止，而剪辑未完成播放。

尝试这样的事情:

  ...
  static boolean running = false;

  public static void main(String[] args) throws Exception {
    playBow();
    while(running) {
      Thread.sleep(200);
    }
  }
  ...
  @Override
  public void update(LineEvent le) {
    LineEvent.Type type = le.getType();
    if (type == LineEvent.Type.OPEN) {
      running = true;
      System.out.println("OPEN");
    } else if (type == LineEvent.Type.CLOSE) {
      System.out.println("CLOSE");
    } else if (type == LineEvent.Type.START) {
      System.out.println("START");
      playingDialog.setVisible(true);
    } else if (type == LineEvent.Type.STOP) {
      System.out.println("STOP");
      playingDialog.setVisible(false);
      clip.close();
      running = false;
    }
  }

请注意，此示例并不是此问题的最佳解决方案。这只是一个例子。