mediaplayer.java

简单的java jmf技术实例

import java.awt.*; 
import java.awt.event.*; 
import javax.swing.*; 
import javax.media.*; 
import java.io.*; 
import java.net.URL;
import java.util.*; 

public class MediaPlayer extends JFrame implements ActionListener,Runnable 
{ 
/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
private JMenuBar bar;//菜单条 
private JMenu fileMenu,choiceMenu,aboutMenu; 
private JMenuItem openItem,openDirItem,closeItem,about,infor; 
private JCheckBoxMenuItem onTop; 
private boolean top=false; //设定窗口是否在最前面 
private Player player;//Play是个实现Controller的接口 
private File file,listFile;//利用File类结合JFileChooser和list.ini进行文件打开等操作操作
private Container c;  
private String title;//标题 
private FileDialog fd; 
private JPanel panel,panelSouth; 
private Icon icon; //开始进入的时候要显示的图标，它为抽象类，不能自己创建 
private JLabel label,listB;//用来显示图标 

private JList list;//播放清单 
private JScrollPane scroll;//使播放清单具有滚动功能  
private ObjectOutputStream output;//对象输出流 

private JPopupMenu popupMenu;//鼠标右键弹出菜单 
private JMenuItem del,delAll,reName; //弹出菜单显示的菜单项,包括删除,全部删除和重命名 

@SuppressWarnings("unchecked")
private Vector<String> fileName,dirName,numList; 
private String files; 
private int index;//曲目指针 
private int indexForDel;//标志要删除的列表项目的索引 
private ButtonGroup buttonGroup;//控制按钮组 
private JRadioButtonMenuItem[] buttonValues; 
private String[] content={"随机播放","顺序播放","单曲循环"}; 



MediaPlayer()//构造函数 
{ 
super("java音频播放器");//窗口标题 

c=getContentPane(); 
c.setLayout(new BorderLayout()); 

fileName=new Vector<String>(1); 
dirName=new Vector<String>(1); 
numList=new Vector<String>(1); 
new Properties(System.getProperties());  
listFile=new File("list.text");//播放列表直接存于此目录 
Thread readToList=new Thread(this);


list=new JList(); 
list.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION); 
list.setFixedCellHeight(25);  //播放列表高度 
list.setFont(new Font("Serif",Font.PLAIN,15)); //文件名高度
list.setBackground(new Color(0,0,255));   
  
//判断，双击歌曲播放 
list.addMouseListener(new MouseAdapter() 
{ 
public void mouseClicked(MouseEvent e) 
{ 
if (e.getClickCount() == 2)  //双击歌曲播放
{ 
index = list.locationToIndex(e.getPoint()); 
createPlayer2(); 
} 
} 

public void mouseReleased(MouseEvent e) 
{ 
checkMenu(e);//自定义函数，判断是否是右键，来决定是否显示菜单
} 

} 
); 

scroll=new JScrollPane(list);//用于存放播放列表 

readToList.start(); 
try 
{ 
Thread.sleep(10); 
} 
catch(InterruptedException e) 
{ 
e.printStackTrace(); 
} 

bar=new JMenuBar(); 
setJMenuBar(bar);//此两行创建菜单栏并放到此窗口程序 
bar.setBackground(new Color(255,255,100));  //标题栏背景颜色
fileMenu=new JMenu("文件"); 
bar.add(fileMenu); 

choiceMenu=new JMenu("控制"); 
bar.add(choiceMenu); 

//aboutMenu=new JMenu("关于"); 
//bar.add(aboutMenu); 

openItem =new JMenuItem("打开文件"); 
openDirItem =new JMenuItem("打开目录"); 
closeItem =new JMenuItem("退出程序"); 
openItem.addActionListener(this); 
openDirItem.addActionListener(this); 
closeItem.addActionListener(this); 
fileMenu.add(openItem); 
fileMenu.add(openDirItem); 
fileMenu.add(closeItem); 

onTop=new JCheckBoxMenuItem("播放时位于最前面",top); 
choiceMenu.add(onTop); 
onTop.addItemListener(new ItemListener() 
{ 
public void itemStateChanged(ItemEvent e) 
{ 
if(onTop.isSelected()) 
top=true; 
else top=false; 
setAlwaysOnTop(top); 
} 
} 
); 



choiceMenu.addSeparator(); 

buttonGroup=new ButtonGroup(); 
buttonValues=new JRadioButtonMenuItem[3]; 
for(int bt=0;bt<3;bt++) 
{ 
buttonValues[bt]=new JRadioButtonMenuItem(content[bt]); 
buttonGroup.add(buttonValues[bt]); 
choiceMenu.add(buttonValues[bt]); 
} 
buttonValues[0].setSelected(true); 
choiceMenu.addSeparator(); 


//about=new JMenuItem("关于作者"); 
//about.addActionListener(this); 
//aboutMenu.add(about); 
//菜单栏设置完毕 

panel=new JPanel(); 
panel.setLayout(new BorderLayout()); 
c.add(panel,BorderLayout.CENTER); 

panelSouth=new JPanel(); 
panelSouth.setLayout(new BorderLayout()); 
c.add(panelSouth,BorderLayout.SOUTH); 

icon=new ImageIcon("icon\\Player.jpg"); 
label=new JLabel(icon); 
panel.add(label); 

//歌曲播放列表添加删除操作
popupMenu=new JPopupMenu(); 
del =new JMenuItem("删除");//鼠标右键弹出菜单对象实例化 
popupMenu.add(del); 
del.addActionListener(this); 

delAll =new JMenuItem("全部删除"); 
popupMenu.add(delAll); 
delAll.addActionListener(this); 
reName =new JMenuItem("重命名"); 
popupMenu.add(reName); 
reName.addActionListener(this); 



scroll=new JScrollPane(list);//用于存放播放列表 
listB=new JLabel(new ImageIcon("icon\\qingdan.gif"),SwingConstants.CENTER); 

panelSouth.add(listB,BorderLayout.NORTH); 
panelSouth.add(scroll,BorderLayout.CENTER); 

this.setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);//设定窗口关闭方式 

this.setLocation(400,250);//设定窗口出现的位置 
//窗口大小 
setSize(350,330); 
this.setResizable(false); 
this.setVisible(true);//此句不可少，否则窗口会不显示 


} 

public void actionPerformed(ActionEvent e) 
{ 
if(e.getSource()==openItem) 
{ 

openFile(); 
} 
if(e.getSource()==openDirItem) 
{ 
openDir(); 
} 
if(e.getSource()==closeItem) 
{ 
exity_n(); 
 
} 
/*if(e.getSource()==about) 
{ 
JOptionPane.showMessageDialog(this,"JAVA媒体播放器\n" 
+"2008科技立项\n "+"数媒0602 顾桂荣 马晓斌 谈一超 蒋泽杰  ","asdasdasdasd" ,JOptionPane.INFORMATION_MESSAGE); 
} 
*/

if(e.getSource()==del) 
{ 
//index 
//delPaintList(index); 
fileName.removeElementAt(indexForDel); 
dirName.removeElementAt(indexForDel); 
numList.removeAllElements(); 
Enumeration<String> enumFile=fileName.elements(); 
while(enumFile.hasMoreElements()) 
{ 
numList.addElement((numList.size()+1)+"."+enumFile.nextElement()); 

} 
//list.setListData(fileName); 
list.setListData(numList); 
if(index<indexForDel) 
list.setSelectedValue(numList.elementAt(index),true); 
else 
{ 
if(index==indexForDel); 
else 
if(index!=0) 
list.setSelectedValue(numList.elementAt(index-1),true); 
} 

//list.setSelectedIndex(index); 
} 

if(e.getSource()==delAll) 
{ 
fileName.removeAllElements(); 
dirName.removeAllElements(); 
numList.removeAllElements(); 
list.setListData(numList); 
} 

if(e.getSource()==reName) 
{ 
String name;//JOptionPane.showInputDialog(this,"请输入新的名字");  重命名歌曲

try 
{ 
name=reNames(); 
fileName.setElementAt(name,indexForDel); 
numList.setElementAt((indexForDel+1)+"."+name,indexForDel); 
} 
catch(ReName e2) 							//该部分代码错误？！						
{ 

} 
} 
if(e.getSource()==infor) 
{  
}
}
 

public static void main(String[] args) 
{ 
final MediaPlayer mp=new MediaPlayer(); 
mp.setIconImage(new ImageIcon("icon\\mPlayer.jpg").getImage());//改变默认图标 
mp.addWindowListener(new WindowAdapter()//注册窗口事件 
{ 
public void windowClosing(WindowEvent e) 
{ 
//System.exit(0); 
mp.exity_n(); 
} 
} 
); 
} 

//打开文件
private void openFile()
{ 

fd = new FileDialog(MediaPlayer.this); 

fd.setVisible(true); 
if (fd.getFile() != null) 
{ 
title = fd.getDirectory() + fd.getFile();
files=fd.getFile();  
file=new File(title); 
createPlayer(); 
}
} 

//路径错误抛出
private void openDir() 
{ 
JFileChooser fileChooser=new JFileChooser(); 
fileChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY); 
int result=fileChooser.showOpenDialog(MediaPlayer.this); 
if(result==JFileChooser.CANCEL_OPTION) 
return; 
file=fileChooser.getSelectedFile(); 
if(file==null||file.getName().equals("")) 
JOptionPane.showMessageDialog(this,"错误的路径", 
"出错了",JOptionPane.ERROR_MESSAGE); 
String[] sFiles=file.list(); 
for(int i=0;i<sFiles.length;i++) 
{ 
fileName.addElement(sFiles[i]); 
numList.addElement((numList.size()+1)+"."+sFiles[i]); 
dirName.addElement(file.getAbsolutePath()+"\\"+sFiles[i]); 
} 
list.setListData(numList); 
 
} 

@SuppressWarnings("deprecation")
private void createPlayer() 
{ 
closePreviosPlayer();//关闭先前的媒体播放器 
String extendName="抱歉，此播放器不支持"+title.substring(title.lastIndexOf(".")+1)+"格式"; 
try 
{ 
URL url2 = file.toURL();
URL url = url2;
player=Manager.createPlayer(url);//javax.media.Manager直接继承于java.lang.object,且它为final,不能被继承 

player.addControllerListener(new ControllerHand()); 
player.start(); 
addList(files); 
index=fileName.size()-1; 
list.setSelectedValue(numList.elementAt(index),true);  
setTitle(title); 



} 
catch(Exception e) 
{ 
JOptionPane.showMessageDialog(this,extendName,"出错了!!",JOptionPane.ERROR_MESSAGE); 
setTitle(extendName); 
} 



} 

private void closePreviosPlayer() 
{ 
if(player==null) 
return; 

//player.close();//首先停止播放 
/* 
*不能用上面的代码停止，要用下面的两行取代，否则Component visual =player.getVisualComponent();发生异常 
**/ 
player.stop(); 
player.deallocate(); //停止播放并且重新装载DateSource 

Component visual =player.getVisualComponent(); 
Component control=player.getControlPanelComponent(); 

if(visual!=null) 
{ 
panel.remove(visual); 
} 
if(control!=null) 
{ 
panel.remove(control); 
} 

} 

private class ControllerHand implements ControllerListener 
{ 
public void controllerUpdate(ControllerEvent e) 
{ 
if(e instanceof RealizeCompleteEvent) 
{ 
Component visual=player.getVisualComponent(); 

if(visual!=null) 
{ 
System.out.println("音频播放器不支持视频图象功能"); 
setTitle("音频播放器不支持视频图象功能"); 

 
} 



Component control=player.getControlPanelComponent(); 

if(control!=null) 
{ 


panel.add(control,BorderLayout.SOUTH); 
} 

//c.validate(); 
panel.doLayout(); 
return; 
} 

if (e instanceof EndOfMediaEvent) 
{ 

if(buttonValues[0].isSelected()) 
{ 
if(fileName.size()==0) 
return; 
index=(int)(Math.random()*fileName.size()); 
} 
if(buttonValues[1].isSelected()) 
{ 
if(fileName.size()==0) 
return;//当用户把播放列表清空的时候，返回 

index=(index+1)%fileName.size(); 
} 
if(buttonValues[2].isSelected()) 
{ 
player.setMediaTime (new Time (0)); 
player.start(); 
} 
createPlayer2(); 

} 
} 
} 
private void exity_n() 
{ 
int exi; 
exi=JOptionPane.showConfirmDialog(this,"真的要离开么？","退出程序",JOptionPane.YES_NO_OPTION, 
JOptionPane.QUESTION_MESSAGE); 
//if(exi==null) 
if(exi==JOptionPane.YES_OPTION) 
{ 
saveList(); 
System.exit(0); 
} 

return; 

} 
private void addList(String vf) 
{ 
//fileReadList=new fileReadList(fdd,) 
//try 
//{ 
//int i=0; 
//fileName.addElement((fileName.size()+1)+"."+vf); 
fileName.addElement(vf); 
numList.addElement((numList.size()+1)+"."+vf); 
//fileName.addElement(++i+"."+vf); 
dirName.addElement(title); 
list.setListData(numList); 
//} 
/*catch(Exception e) 
{ 
e.printStackTrace(); 
//System.out.println(e.getMessage()); 
}*/ 


} 
@SuppressWarnings("deprecation")
private void createPlayer2() 
{ 

try{title=dirName.elementAt(index).toString();} 
//title=dirName.elementAt(index).toString(); 
catch(ArrayIndexOutOfBoundsException e) 
{return;} 
file=new File(title); 
closePreviosPlayer();//关闭先前的媒体播放器 
try 
{ 
URL url = file.toURL();
player=Manager.createPlayer(url);//Java.media.Manager直接继承于java.lang.object,且它为final,不能被继承 

player.addControllerListener(new ControllerHand()); 
player.start(); 
//list.setSelectedIndex(index); 
list.setSelectedValue(numList.elementAt(index),true); 
//list.setSelectionForeground(Color.blue); 
//list.setSelectedIndex(index); 
//addList(files); 
setTitle(title); 

//addList("files");//到播放清单 

} 
catch(Exception e) 
{ 

String ex=null; 
try{ex=fileName.elementAt(index).toString(); 
} 
catch(Exception e1){return;} 
fileName.removeElementAt(index); 
numList.removeAllElements(); 
Enumeration<String> enumFile=fileName.elements(); 
while(enumFile.hasMoreElements()) 
{ 
numList.addElement((numList.size()+1)+"."+enumFile.nextElement()); 

} 

dirName.removeElementAt(index);  
list.setListData(numList); 


System.out.println("已经从播放列表中删除 "+"\""+ex+"\""+" 文件," 
+"因为此播放器不支持"+ex.substring(ex.lastIndexOf(".")+1)+"格式,"); 
if(numList.size()!=0) 
{ 
index%=numList.size(); 
createPlayer2(); 
} 
} 

} 
private void saveList() 
{ 
try 
{ 
output=new ObjectOutputStream(new FileOutputStream(listFile)); 
output.flush(); 
output.close(); 

} 
catch(Exception e) 
{ 
e.printStackTrace(); 
} 

} 
public void run() 
{ 
try 
{ 
Thread.sleep(1); 
} 
catch(InterruptedException e) 
{ 
} 

finally 
{ 
if(dirName.isEmpty())//防止Vector越界 
{ 
return; 
} 
index=(int)(Math.random()*(fileName.size()));//产生随即数，进行随即播放 
list.setListData(numList); 
//list.setListData(fileName); 
//list.setSelectedValue(fileName.elementAt(index),true); 
//list.ensureIndexIsVisible(index);//确保选择项可以看见 
//list.setSelectionForeground(Color.green); 
createPlayer2(); 
} 

} 
private void checkMenu(MouseEvent e) 
{ 

if(e.isPopupTrigger()) 
{ 
indexForDel=list.locationToIndex(e.getPoint()); 
int[] selected={index,indexForDel}; 
//Point p=new Point(e.getX(),e.getY()); 

list.setSelectedIndices(selected); 
popupMenu.show(list,e.getX(),e.getY()); 

} 
//list.setSelectedIndex(index); 
} 
String reNames() throws ReName//文件该名函数 
{ 
String name=JOptionPane.showInputDialog(this,"请输入新的名字",fileName.elementAt(indexForDel)); 
if(name==null||name.equals("")) throw new ReName(); 

return name; 
} 
class ReName extends Exception//自定义异常来处理文件该名的时候发生输入为空的情形 
{

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L; 
} 


}