Java：健全的交通问题

Question

我设置了一个SoundManager 类和一个Sound 类，这样我就可以在我的代码中的任何位置播放声音。我的问题是，在家时，声音片段可以正常播放（在将它们转换为.wav 的正确音频形式之后）。但是，在学校，程序崩溃了，说不支持音频格式。有没有办法让音频在任何系统上运行，无论 java 版本如何？

谢谢

Answer 1

您可以使用以下方式在机器上查看 Java Sounds API 支持的格式：

public static void displayMixerInfo()
{
  Mixer.Info [] mixersInfo = AudioSystem.getMixerInfo();

  for (Mixer.Info mixerInfo : mixersInfo)
   {
     System.out.println("Mixer: " + mixerInfo.getName());

     Mixer mixer = AudioSystem.getMixer(mixerInfo);

     Line.Info [] sourceLineInfo = mixer.getSourceLineInfo();
     for (Line.Info info : sourceLineInfo)
      {
        showLineInfo(info);
      }

     Line.Info [] targetLineInfo = mixer.getTargetLineInfo();
     for (Line.Info info : targetLineInfo)
      {
        showLineInfo(info);
      }
   }
}


private static void showLineInfo(Line.Info lineInfo)
{
  System.out.println("  " + lineInfo.toString());

  if (lineInfo instanceof DataLine.Info)
   {
     DataLine.Info dataLineInfo = (DataLine.Info)lineInfo;

     AudioFormat [] formats = dataLineInfo.getFormats();
     for (AudioFormat format : formats)
      {
        System.out.println("    " + format.toString());
      }
   }
}

在我的 Mac 上显示：

Mixer: Default Audio Device
  interface SourceDataLine supporting 14 audio formats, and buffers of at least 32 bytes
    PCM_UNSIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame, 
    PCM_SIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame, 
    PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, big-endian
    PCM_SIGNED unknown sample rate, 24 bit, mono, 3 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 24 bit, mono, 3 bytes/frame, big-endian
    PCM_UNSIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame, 
    PCM_SIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame, 
    PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, big-endian
    PCM_SIGNED unknown sample rate, 24 bit, stereo, 6 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 24 bit, stereo, 6 bytes/frame, big-endian
    PCM_SIGNED 44100.0 Hz, 16 bit, stereo, 4 bytes/frame, little-endian
    PCM_SIGNED 44100.0 Hz, 16 bit, stereo, 4 bytes/frame, big-endian
  interface Clip supporting 14 audio formats, and buffers of at least 32 bytes
    PCM_UNSIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame, 
    PCM_SIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame, 
    PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, big-endian
    PCM_SIGNED unknown sample rate, 24 bit, mono, 3 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 24 bit, mono, 3 bytes/frame, big-endian
    PCM_UNSIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame, 
    PCM_SIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame, 
    PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, big-endian
    PCM_SIGNED unknown sample rate, 24 bit, stereo, 6 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 24 bit, stereo, 6 bytes/frame, big-endian
    PCM_SIGNED 44100.0 Hz, 16 bit, stereo, 4 bytes/frame, little-endian
    PCM_SIGNED 44100.0 Hz, 16 bit, stereo, 4 bytes/frame, big-endian
  interface TargetDataLine supporting 14 audio formats, and buffers of at least 32 bytes
    PCM_UNSIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame, 
    PCM_SIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame, 
    PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, big-endian
    PCM_SIGNED unknown sample rate, 24 bit, mono, 3 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 24 bit, mono, 3 bytes/frame, big-endian
    PCM_UNSIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame, 
    PCM_SIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame, 
    PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, big-endian
    PCM_SIGNED unknown sample rate, 24 bit, stereo, 6 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 24 bit, stereo, 6 bytes/frame, big-endian
    PCM_SIGNED 44100.0 Hz, 16 bit, stereo, 4 bytes/frame, little-endian
    PCM_SIGNED 44100.0 Hz, 16 bit, stereo, 4 bytes/frame, big-endian
Mixer: Built-in Microphone
  interface TargetDataLine supporting 14 audio formats, and buffers of at least 32 bytes
    PCM_UNSIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame, 
    PCM_SIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame, 
    PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, big-endian
    PCM_SIGNED unknown sample rate, 24 bit, mono, 3 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 24 bit, mono, 3 bytes/frame, big-endian
    PCM_UNSIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame, 
    PCM_SIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame, 
    PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, big-endian
    PCM_SIGNED unknown sample rate, 24 bit, stereo, 6 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 24 bit, stereo, 6 bytes/frame, big-endian
    PCM_SIGNED 44100.0 Hz, 16 bit, stereo, 4 bytes/frame, little-endian
    PCM_SIGNED 44100.0 Hz, 16 bit, stereo, 4 bytes/frame, big-endian
Mixer: Built-in Output
  interface SourceDataLine supporting 14 audio formats, and buffers of at least 32 bytes
    PCM_UNSIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame, 
    PCM_SIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame, 
    PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, big-endian
    PCM_SIGNED unknown sample rate, 24 bit, mono, 3 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 24 bit, mono, 3 bytes/frame, big-endian
    PCM_UNSIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame, 
    PCM_SIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame, 
    PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, big-endian
    PCM_SIGNED unknown sample rate, 24 bit, stereo, 6 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 24 bit, stereo, 6 bytes/frame, big-endian
    PCM_SIGNED 44100.0 Hz, 16 bit, stereo, 4 bytes/frame, little-endian
    PCM_SIGNED 44100.0 Hz, 16 bit, stereo, 4 bytes/frame, big-endian
  interface Clip supporting 14 audio formats, and buffers of at least 32 bytes
    PCM_UNSIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame, 
    PCM_SIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame, 
    PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, big-endian
    PCM_SIGNED unknown sample rate, 24 bit, mono, 3 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 24 bit, mono, 3 bytes/frame, big-endian
    PCM_UNSIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame, 
    PCM_SIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame, 
    PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, big-endian
    PCM_SIGNED unknown sample rate, 24 bit, stereo, 6 bytes/frame, little-endian
    PCM_SIGNED unknown sample rate, 24 bit, stereo, 6 bytes/frame, big-endian
    PCM_SIGNED 44100.0 Hz, 16 bit, stereo, 4 bytes/frame, little-endian
    PCM_SIGNED 44100.0 Hz, 16 bit, stereo, 4 bytes/frame, big-endian
Mixer: Port Built-in Microphone
  MICROPHONE source port
Mixer: Port Built-in Output
  HEADPHONE target port