用JAVA编写midi文件

import javax.sound.midi.*;

public class MidiWriter {
    public static void main(String[] args) {
        try {
            // 创建一个Sequence对象，用于存储音乐数据
            Sequence sequence = new Sequence(Sequence.PPQ, 1);

            // 创建一个Track对象，用于存储音轨数据
            Track track = sequence.createTrack();

            // 创建一个MidiEvent对象，用于存储音符事件
            MidiEvent event = null;

            // 设置乐器
            ShortMessage instrumentChange = new ShortMessage();
            instrumentChange.setMessage(ShortMessage.PROGRAM_CHANGE, 0, 0, 0);
            event = new MidiEvent(instrumentChange, 0);
            track.add(event);

            // 添加音符事件
            ShortMessage noteOn = new ShortMessage();
            noteOn.setMessage(ShortMessage.NOTE_ON, 0, 60, 100);
            event = new MidiEvent(noteOn, 0);
            track.add(event);

            ShortMessage noteOff = new ShortMessage();
            noteOff.setMessage(ShortMessage.NOTE_OFF, 0, 60, 100);
            event = new MidiEvent(noteOff, 16);
            track.add(event);

            // 创建一个Sequencer对象，用于播放MIDI文件
            Sequencer sequencer = MidiSystem.getSequencer();
            sequencer.open();
            sequencer.setSequence(sequence);

            // 播放MIDI文件
            sequencer.start();

            // 等待播放完成
            while (sequencer.isRunning()) {
                Thread.sleep(100);
            }

            // 关闭Sequencer
            sequencer.stop();
            sequencer.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}