Java I/O mp3 文件读取

Question

我想阅读 mp3 文件的详细信息，例如持续时间、比特率、艺术家等。我可以通过阅读以下某些行来找到一些信息:

File f=fc.getSelectedFile();
FileInputStream inp=null; 
  byte[] buffer=new byte[128];    
     inp= new FileInputStream(f)
     inp.skip(f.length()-128);
     inp.read(buffer);      

    }
    String str=new String(buffer);       
    tf.setText(str);   

我想要清楚地获取所有详细信息。我怎样才能做到这一点？

Answer 1

Get duration Using MP3SPI:

private static void getDurationWithMp3Spi(File file) throws UnsupportedAudioFileException, IOException {

AudioFileFormat fileFormat = AudioSystem.getAudioFileFormat(file);
if (fileFormat instanceof TAudioFileFormat) {
    Map<?, ?> properties = ((TAudioFileFormat) fileFormat).properties();
    String key = "duration";
    Long microseconds = (Long) properties.get(key);
    int mili = (int) (microseconds / 1000);
    int sec = (mili / 1000) % 60;
    int min = (mili / 1000) / 60;
    System.out.println("time = " + min + ":" + sec);
} else {
    throw new UnsupportedAudioFileException();
}