作者：佚名 责任编辑：左决 点击数： 更新时间：2008-3-23 20:49:27

　　在MIDI的播放中，一个类是比较重要的，那就是MidiSystem类，它负责整个MIDI播放设备等的管理，其实就是Seqencer，它就是一个MIDI播放设置，用于播放MIDI序列的，还有一个类叫Seqence，它就是MIDI的序列，MIDI的序列可以自己由程序生成，也可以从文件中或者URL中读取。

　　下面是一个播放MIDI音乐功能实例：

/* * Test5.java * * Created on 2007-9-22, 11:16:22 * * To change this template, choose Tools | Templates * and open the template in the editor. */ package test1; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.util.Hashtable; import java.util.Map; import java.util.logging.Level; import java.util.logging.Logger; import javax.sound.midi.InvalidMidiDataException; import javax.sound.midi.MidiSystem; import javax.sound.midi.MidiUnavailableException; import javax.sound.midi.Sequence; import <a class="channel_keylink" href="http://www.zuojue.com" target="_blank">java</a>x.sound.midi.Sequencer; /** * * @author hadeslee */ public class Test5 implements Runnable{ private Sequencer midi; private String[] names={"1.mid","2.mid","3.mid","4.mid","5.mid"}; private int i; private Map<String,Sequence> map; public Test5(){ initMap(); new Thread(this).start(); } private void in<a class="channel_keylink" href="http://www.zuojue.com" target="_blank">IT</a>Map(){ try { map = new Hashtable<String, Sequence>(); midi = MidiSystem.getSequencer(false); midi.open(); for (String s : names) { try { Sequence s1 = MidiSystem.getSequence(new File(s)); map.put(s, s1); } catch (InvalidMidiDataException ex) { Logger.getLogger(Test5.class.getName()).log(Level.SEVERE, null, ex); } catch (IOException ex) { Logger.getLogger(Test5.class.getName()).log(Level.SEVERE, null, ex); } } } catch (MidiUnavailableException ex) { Logger.getLogger(Test5.class.getName()).log(Level.SEVERE, null, ex); } } private void createPlayer(String name){ try { Sequence se=map.get(name); midi.setSequence(se); midi.start(); }catch (InvalidMidiDataException ex) { Logger.getLogger(Test5.class.getName()).log(Level.SEVERE, null, ex); } } public void run(){ while(true){ try { System.out.println("换文件了."+(++i)); String name=names[(int)(Math.random()*names.length)]; createPlayer(name); Thread.sleep(10000); } catch (InterruptedException ex) { Logger.getLogger(Test5.class.getName()).log(Level.SEVERE, null, ex); } } } public static void main(String[] args) { new Test5(); } }