在Java中播放时，将midi文件输出到控制台

import javax.sound.midi.*;

public class MidiPlayer {

    public static void main(String[] args) {
        try {
            // 创建一个Sequencer对象
            Sequencer sequencer = MidiSystem.getSequencer();
            
            // 打开Sequencer
            sequencer.open();
            
            // 创建一个Sequence对象
            Sequence sequence = new Sequence(Sequence.PPQ, 4);
            
            // 创建一个Track对象
            Track track = sequence.createTrack();
            
            // 创建一个MidiEvent来设置音符
            ShortMessage noteOn = new ShortMessage();
            noteOn.setMessage(ShortMessage.NOTE_ON, 0, 60, 127);
            MidiEvent noteOnEvent = new MidiEvent(noteOn, 0);
            
            // 添加MidiEvent到Track中
            track.add(noteOnEvent);
            
            // 创建一个MidiEvent来表示音符结束
            ShortMessage noteOff = new ShortMessage();
            noteOff.setMessage(ShortMessage.NOTE_OFF, 0, 60, 0);
            MidiEvent noteOffEvent = new MidiEvent(noteOff, 16);
            
            // 添加MidiEvent到Track中
            track.add(noteOffEvent);
            
            // 将Sequence设置到Sequencer中
            sequencer.setSequence(sequence);
            
            // 开始播放MIDI文件
            sequencer.start();
            
            // 等待播放完成
            while (sequencer.isRunning()) {
                Thread.sleep(100);
            }
            
            // 关闭Sequencer
            sequencer.close();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}