java - 我的代码有什么问题，无法播放 wav 文件？

Question

我正在尝试使用可用的代码:How can I play sound in Java?但我无法在那里发布问题，因为这是一个新帐户并且只有 1 个信誉。

原始代码:

  public static synchronized void playSound(final String url) {
  new Thread(new Runnable() { // the wrapper thread is unnecessary, unless it blocks on the Clip finishing, see comments
  public void run() {
    try {
      Clip clip = AudioSystem.getClip();
      AudioInputStream inputStream = AudioSystem.getAudioInputStream(Main.class.getResourceAsStream("/path/to/sounds/" + url));
      clip.open(inputStream);
      clip.start(); 
    } catch (Exception e) {
      System.err.println(e.getMessage());
    }
  }
}).start();
}

这是我的代码:

package sound_test;
import javax.sound.sampled.*;

public class Main {

public static synchronized void playSound(final String url) {
new Thread(new Runnable() {
  public void run() {
    try {
      Clip clip = AudioSystem.getClip();
      AudioInputStream inputStream = AudioSystem.getAudioInputStream(Main.class.getResourceAsStream("/path/to/sounds/" + url));
      clip.open(inputStream);
      clip.start();
    } catch (Exception e) {
      System.err.println(e.getMessage());
    }
  }
}).start();
}

public static void main(String[] args) {
    // TODO code application logic here
    playSound("C:\\warning_test.wav");
}

}

当我运行代码时，我收到“null”作为输出，并且没有声音发出。我检查了文件名和路径，是正确的。

截图:

http://puu.sh/pkYo

http://puu.sh/pkZl

提前谢谢您。

Answer 1

你可以这样做

AudioInputStream inputStream=AudioSystem.getAudioInputStream(new File(url));

还在click.start()之后添加延迟；即 Thread.Sleep(4000);

或者，如果您想确保它播放整个音频样本，您可以使用一个简单的片段，例如

import javax.sound.sampled.*;
import java.io.File;

public class Main  implements LineListener {
private boolean done = false;
public  void update(LineEvent event) {
    if(event.getType() == LineEvent.Type.STOP || event.getType() == LineEvent.Type.CLOSE) {
      done = true;
    }
}

public void waitonfinish() throws InterruptedException {
   while(!done) {
       Thread.sleep(1000);
   } 
}
public static  void playSound(final String url) {

    try {
      Clip clip = AudioSystem.getClip();
      AudioInputStream inputStream = AudioSystem.getAudioInputStream(new File(url));
      Main control = new Main();
      clip.addLineListener(control);
      clip.open(inputStream);
      clip.start();
      control.waitonfinish();

    } catch (Exception e) {
      System.err.println(e.getMessage());
    }
  }

public static void main(String[] args) {
    // TODO code application logic here
    playSound("C:\\warning_test.wav");   
 }
}

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