Java实现视频播放功能

实现mpg格式的视频播放功能，带播放器

package engine; import java.awt.BorderLayout; import java.awt.Component; import java.awt.Dimension; import java.awt.Frame; import java.awt.Panel; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.io.IOException; import java.net.MalformedURLException; import java.net.URL; import javax.media.ControllerEvent; import javax.media.ControllerListener; import javax.media.EndOfMediaEvent; import javax.media.Manager; import javax.media.MediaLocator; import javax.media.NoPlayerException; import javax.media.Player; import javax.media.PrefetchCompleteEvent; import javax.media.RealizeCompleteEvent; import javax.media.Time; public class MediaPlay implements ControllerListener { private Frame f; private Player player; private Panel panel; private Component visual; private Component control = null; public void play(String song){ f = new Frame("JMF Sample1"); f.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent we) { if(player != null) { player.close(); } System.exit(0); } }); f.setSize(500,400); f.setVisible(true); URL url = null; try { //准备一个要播放的视频文件的URL url = new URL(song); } catch (MalformedURLException e) { e.printStackTrace(); } try { //通过调用Manager的createPlayer方法来创建一个Player的对象 //这个对象是媒体播放的核心控制对象 player = Manager.createPlayer(url); } catch (NoPlayerException e1) { e1.printStackTrace(); } catch (IOException e1) { e1.printStackTrace(); } //对player对象注册监听器，能噶偶在相关事件发生的时候执行相关的动作 player.addControllerListener(this); //让player对象进行相关的资源分配 player.realize(); } private int videoWidth = 0; private int videoHeight = 0; private int controlHeight = 30; private int insetWidth = 10; private int insetHeight = 30; //监听player的相关事件 public void controllerUpdate(ControllerEvent ce) { if (ce instanceof RealizeCompleteEvent) { //player实例化完成后进行player播放前预处理 player.prefetch(); } else if (ce instanceof PrefetchCompleteEvent) { if (visual != null) return; //取得player中的播放视频的组件，并得到视频窗口的大小 //然后把视频窗口的组件添加到Frame窗口中， if ((visual = player.getVisualComponent()) != null) { Dimension size = visual.getPreferredSize(); videoWidth = size.width; videoHeight = size.height; f.add(visual); } else { videoWidth = 320; } //取得player中的视频播放控制条组件，并把该组件添加到Frame窗口中 if ((control = player.getControlPanelComponent()) != null) { controlHeight = control.getPreferredSize().height; f.add(control, BorderLayout.SOUTH); } //设定Frame窗口的大小，使得满足视频文件的默认大小 f.setSize(videoWidth + insetWidth, videoHeight + controlHeight + insetHeight); f.validate(); //启动视频播放组件开始播放 player.start(); } else if (ce instanceof EndOfMediaEvent) { //当播放视频完成后，把时间进度条恢复到开始，并再次重新开始播放 player.setMediaTime(new Time(0)); player.start(); } } public static void main(String[] args) { String[] songList=new String[100]; MediaPlay sp = new MediaPlay(); songList[0]="file:/D:/workspace/guiabc.mpg"; songList[1]="file:/D:/gui1.mpg"; for(int i=0;i<2;i++){ sp.play(songList[0]); } } }