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java midi音乐文件播放器

java midi音乐文件播放器

import javax.swing.*;

import javax.sound.midi.*;

import java.awt.GridLayout;

import java.io.File;

public class MidiPlayer extends JFrame {

@SuppressWarnings("deprecation")

MidiPlayer(String song) {

super(song);

setSize(300, 150);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

MidiPanel midi = new MidiPanel(song);

JPanel pane = new JPanel();

pane.add(midi);

setContentPane(pane);

show();

}

public static void main(String[] arguments) {

MidiPlayer pm = new MidiPlayer("c:\\1.midi"); // midi文件

}

}

class MidiPanel extends JPanel implements Runnable {

Thread runner;

JProgressBar progress = new JProgressBar();

Sequence currentSound;// 音序

Sequencer player;// 默认音序器

String songFile;// 歌曲

MidiPanel(String song) {

super();

songFile = song;

JLabel label = new JLabel("Playing file...");

setLayout(new GridLayout(2, 1));

add(label);

add(progress);

if (runner == null) {

runner = new Thread(this);

runner.start();

}

}

public void run() {

try {

System.out.println(songFile);

File file = new File(songFile);

currentSound = MidiSystem.getSequence(file);// 获取音序文件

player = MidiSystem.getSequencer();// 获取音序器

player.open();

player.setSequence(currentSound);// 设置音序器播放指定音乐文件

progress.setMinimum(0);

progress.setMaximum((int) player.getMicrosecondLength());// 设置最大位歌曲时间

player.start();

while (player.isRunning()) {

progress.setValue((int) player.getMicrosecondPosition());// 设置播放文件显示当前播放进度

try {

Thread.sleep(1000);

} catch (Exception e) {

// TODO: handle exception

}

}

player.close();

} catch (Exception e) {

// TODO: handle exception

}

}

}

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