问如何使用麦克风输入作为JavaFX媒体播放器的输入？

EN

Exception in thread "JavaFX Application Thread" MediaException: MEDIA_UNSUPPORTED : Empty signature!

public class Music {

static AudioFormat format;
static DataLine.Info info;

public static void input(int i, int j, int pinState) {
    format = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, 44100, 16, 2, 4, 44100, false);

    try {
        info = new DataLine.Info(TargetDataLine.class, format);
        final TargetDataLine targetLine = (TargetDataLine) AudioSystem.getLine(info);
        targetLine.open();

        AudioInputStream audioStream = new AudioInputStream(targetLine);

        File temp = File.createTempFile("Input", ".wav");
        temp.deleteOnExit();

        Thread targetThread = new Thread() {
            public void run() {
                targetLine.start();
                try {
                    AudioSystem.write(audioStream, AudioFileFormat.Type.WAVE, temp);
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        };

        targetThread.start();

        Media media = new Media(temp.toURI().toURL().toString());
        MediaPlayer player = new MediaPlayer(media);
        player.setAudioSpectrumThreshold(-100);
        player.setMute(false);
        player.setAudioSpectrumListener(new AudioSpectrumListener() {
             @Override  
             public void spectrumDataUpdate(double timestamp, double duration, float[] magnitudes, float[] phases) {
                 if(Var.nodeController[i] == 3) { //testing if the targetLine should keep on capturing sound
                 } else {
                     targetLine.stop();
                     targetLine.close();
                     player.stop();
                 }
             }
        });
        player.play();
    } catch (LineUnavailableException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
}