师兄写的一个JAVA播放器的源代码
MediaPlayer.java
----------------------------------------------------------------------------
//程序主文件
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.media.*;
import java.io.*;
import java.util.*;//为了导入Vector
//import com.sun.java.swing.plaf.windows.*;
public class MediaPlayer extends JFrame implements ActionListener,Runnable
{
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,loop;//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进行文件打开操作,后则与list.ini有关
private Container c;
//private UIManager.LookAndFeelInfo[] look;
private String title,listIniAddress;//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 ListValues listWriteFile;//用于向文件中读取对象
private ObjectInputStream input;//对象输入流
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
private Vector fileName,dirName,numList;
private String files,dir;
private int index;//曲目指针
private Properties prop;//获得系统属性
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"};
private DialogDemo dialog1;
//private JDialogTest dialog2;//用于显示播放清单
MediaPlayer()//构造函数
{
super("java音频播放器1.1版");//窗口标题
c=getContentPane();
c.setLayout(new BorderLayout());
//c.setBackground(new Color(40,40,95));
fileName=new Vector(1);
dirName=new Vector(1);
numList=new Vector(1);//构造三个容器用于支持播放清单
//vectorToString=new String[];
//prop=new Properties(System.getProperties());
//listIniAddress=prop.getProperty("user.dir")+"\\list.ini";
//listFile=new File(listIniAddress);//本来这些代码用来取的系统属性，后来
//发现根本就不用这么麻烦
listFile=new File("list.ini");//直接存于此目录
Thread readToList=new Thread(this);//注意编线程程序的时候要注意运行的时候含有的变量亿定义或者初始化，
//这就要求线程要等上述所说的情况下再运行，否则很容易发生错误或则异常
list=new JList();
list.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
list.setSelectionForeground(new Color(0,150,150));
list.setVisibleRowCount(10);
list.setFixedCellHeight(12);
list.setFixedCellWidth(250);
list.setFont(new Font("Serif",Font.PLAIN,12));
list.setBackground(new Color(40,40,95));
list.setForeground(new Color(0,128,255));
//list.setOpaque(false);
list.setToolTipText("点右键显示更多功能");//创建播放清单并设置各个属性
list.addMouseListener(new MouseAdapter()
{
public void mouseClicked(MouseEvent e)
{
if (e.getClickCount() == 2) //判断是否双击
{
index = list.locationToIndex(e.getPoint());//将鼠标坐标转化成list中的选项指针
createPlayer2();
//System.out.println("Double clicked on Item " + index);，此是测试的时候加的
}
}
/* public void mousePressed(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
}*/
public void mouseReleased(MouseEvent e)
{
checkMenu(e);//与上面的一样，判断是否鼠标右键
}
}
);
//listB=new JLabel(new ImageIcon("qingdan.gif"),SwingConstants.CENTER);
scroll=new JScrollPane(list);//用于存放播放列表
//dialog2=new JDialogTest(MediaPlayer.this,"播放清单",scroll);
//dialog2.setVisible(true);
readToList.start();//启动先程，加载播放列表
try
{
Thread.sleep(10);
}
catch(InterruptedException e)
{
e.printStackTrace();
}
/*look=UIManager.getInstalledLookAndFeels();
try
{
UIManager.setLookAndFeel(look[2].getClassName());
SwingUtilities.updateComponentTreeUI(this);
}
catch(Exception e)
{
e.printStackTrace();
}*///与下面的代码实现相同的功能,但执行速度要慢，原因:明显转了个大弯
/*try
{
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
}
catch(Exception e)
{
e.printStackTrace();
} *///此段代码使执行速度大大降低
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(48,91,183));
fileMenu=new JMenu("文件");
bar.add(fileMenu);
choiceMenu=new JMenu("控制");
bar.add(choiceMenu);
aboutMenu=new JMenu("帮助");
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();//加分割符号
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();
/*loopItem=new JCheckBoxMenuItem("是否循环");
choiceMenu.add(loopItem);
loopItem.addItemListener(new ItemListener()
{
public void itemStateChanged(ItemEvent e)
{
loop=!loop;
}
}
);*/
infor=new JMenuItem("软件简介");
aboutMenu.add(infor);
infor.addActionListener(this);
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);
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);
dialog1=new DialogDemo(MediaPlayer.this,"软件说明");
this.setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);//设定窗口关闭方式
//this.setTitle("d");编译通过，说明可以再次设定标题
this.setLocation(400,250);//设定窗口出现的位置
//this.setSize(350,320);//窗口大小
setSize(350,330);
this.setResizable(false);//设置播放器不能随便调大小
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)//getSource()判断发生时间的组键
{
//System.out.println("d");测试用
openFile();
//createPlayer();
//setTitle(title);
}
if(e.getSource()==openDirItem)//打开目录
{
openDir();
}
if(e.getSource()==closeItem)//推出播放器
{
exity_n();
//System.exit(0);
}
if(e.getSource()==about)
{
JOptionPane.showMessageDialog(this,"此简易播放器由计科0302\n"
+"harly\n "+" 完成 ",
"参与者",
JOptionPane.INFORMATION_MESSAGE);
}
if(e.getSource()==del)
{
//index
//delPaintList(index);
fileName.removeElementAt(indexForDel);
dirName.removeElementAt(indexForDel);
numList.removeAllElements();//从三个容器里面移除此项
Enumeration enumFile=fileName.elements();
while(enumFile.hasMoreElements())
{
numList.addElement((numList.size()+1)+"."+enumFile.nextElement());
//numList添加元素，显示播放里表中
}
//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)//全部删除
{
fileName.removeAllElements();
dirName.removeAllElements();
numList.removeAllElements();
list.setListData(numList);
}
if(e.getSource()==reName)//重命名
{
String name;//=JOptionPane.showInputDialog(this,"请输入新的名字");
try
{
name=reNames();
fileName.setElementAt(name,indexForDel);
numList.setElementAt((indexForDel+1)+"."+name,indexForDel);
}
catch(ReName e2)//自定义的异常
{
}
}
if(e.getSource()==infor)
{
dialog1.setVisible(true);
}
}
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();
}
}
);
System.out.println("注意：更新文件列表后，请先正常关闭播放器"
+"\n然后再关闭此DOS窗口，否则导致播放列表不能保存！！");
}
private void openFile()//为了界面原因，此代码重写，估计兼容性不好了
{
/*JFileChooser fileChooser=new JFileChooser();//文件选择器
fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);//可以选择文件不能目录
int result=fileChooser.showOpenDialog(this);//创建文件打开对话框，并设定此程序为父窗口监控*/
/*通过result的值来判断文件是否打开成功
*JFileChooser类有很多静态成员变量
**/
/*if(result==JFileChooser.CANCEL_OPTION)
{
file=null;//file已经在类中定义，如果选择取消，file指向为空
}
else
{
file=fileChooser.getSelectedFile();//获得文件对象
title=file.getAbsolutePath();//取得文件的绝对路径并且赋给title设定标题
}*/
//if(fd==null)
//{
//String filename="java音频播放器";
fd = new FileDialog(MediaPlayer.this);
//Filters fl=new Filters();
//fd.setFilenameFilter(fl);
fd.setVisible(true);
if (fd.getFile() != null)
{
title = fd.getDirectory() + fd.getFile();//原因请见同目录下的FileDialogDemo.java文件
files=fd.getFile();
//dir =fd.getDirectory();
file=new File(title);
createPlayer();
}
//title=filename;
//fd=null;//缺少此句如果第一次打开文件的时候取消操作的时候第二次也不能打开文件了
//}
}
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);
/*fd=new FileDialog(MediaPlayer.this);
fd.setVisible(true);
if(fd.getDirectory()!=null)
{
File fileDir=new File(fd.getDirectory());
String[] ss=fileDir.list();
for(int i=0;i<ss.length;i++)
{
System.out.println(ss[i]);
}
}*/
}
private void createPlayer()
{
closePreviosPlayer();//关闭先前的媒体播放器
String extendName="此播放器好象不支持"+title.substring(title.lastIndexOf(".")+1)+"格式";
try
{
player=Manager.createPlayer(file.toURL());//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);
//list.setSelectedIndex(index);
//list.setSelectionForeground(Color.blue);
setTitle(title);
//addList("files");//到播放清单
//title="file.getAbsoluteFile()";
}
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");
panel.removeAll();
panel.add(visual,BorderLayout.CENTER);
}
else
{
panel.add(label,BorderLayout.CENTER);
}///此else语句可以防止因为原来播放视频图象后以后没有界面
Component control=player.getControlPanelComponent();
if(control!=null)
{
panel.add(control,BorderLayout.SOUTH);
}
//c.validate();
panel.doLayout();
return;
}
if (e instanceof EndOfMediaEvent)
{
/*if (loop)
{
player.setMediaTime (new Time (0));
player.start ();
}
return;*/
if(buttonValues[0].isSelected())
{
if(fileName.size()==0)
return;
index=(int)(Math.random()*fileName.size());
}
if(buttonValues[1].isSelected())
{
if(fileName.size()==0)
return;//必须有此if语句，否则当用户把播放列表清空的时候发生异常，偶然的机会发现的
//现在感觉测试软件真是太重要了，看来以后程序做好后要反复测试，考虑各种情况
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;*/
saveList();
System.exit(0);
}
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());
}*/
}
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
String extendName="此播放器好象不支持"+title.substring(title.lastIndexOf(".")+1)+"格式";
try
{
player=Manager.createPlayer(file.toURL());//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();
//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)
{
//JOptionPane.showMessageDialog(this,extendName,"出错了!!",JOptionPane.ERROR_MESSAGE);
//setTitle(extendName);
String ex=null;
try{ex=fileName.elementAt(index).toString();
}
catch(Exception e1){return;}
fileName.removeElementAt(index);
numList.removeAllElements();
Enumeration enumFile=fileName.elements();
while(enumFile.hasMoreElements())
{
numList.addElement((numList.size()+1)+"."+enumFile.nextElement());
}
dirName.removeElementAt(index);
//list.setListData(fileName);
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,"
+"不过没有从硬盘真正删除");
if(numList.size()!=0)
{
index%=numList.size();
createPlayer2();
}
}
}
private void saveList()
{
Enumeration enumFile=fileName.elements();
Enumeration enumDir =dirName.elements();
try
{
output=new ObjectOutputStream(new BufferedOutputStream(new FileOutputStream(listFile)));
while(enumFile.hasMoreElements())
{
listWriteFile=new ListValues(enumFile.nextElement().toString(),enumDir.nextElement().toString());
output.writeObject(listWriteFile);
}
output.flush();
output.close();
}
catch(Exception e)
{
e.printStackTrace();
}
/*finally
{
output.flush();
output.close();//郁闷，这两行不能写在这里，实在是一大遗憾啊，不知道有什么别的方法
}*/
}
public void run()
{
try
{
Thread.sleep(1);
}
catch(InterruptedException e)
{
}
try
{
if(!listFile.exists())
{
listFile.createNewFile();//防止不存在此文件发生读取错误，这两行代码保证不存在的情况下自动建立
return;
}
input=new ObjectInputStream(new BufferedInputStream(new FileInputStream(listFile)));
while(true)
{
listWriteFile=(ListValues)input.readObject();
fileName.addElement(listWriteFile.getFileName());
numList.addElement((numList.size()+1)+"."+listWriteFile.getFileName());
dirName.addElement(listWriteFile.getDirName());
}
}
catch(EOFException e)
{
try
{
//if(!fileName.isEmpty())
input.close();//确认有元素存在并加载完毕后关闭输入流
}
catch(IOException e1)
{
JOptionPane.showMessageDialog(MediaPlayer.this,"文件被非正常关闭",
"非法关闭",JOptionPane.ERROR_MESSAGE);
}
}
catch(ClassNotFoundException e)
{
JOptionPane.showMessageDialog(MediaPlayer.this,"不能创建对象","对象创建失败",JOptionPane.ERROR_MESSAGE);
}
catch(IOException e)
{
JOptionPane.showMessageDialog(MediaPlayer.this,"不能读取文件",
"读取文件失败",JOptionPane.ERROR_MESSAGE);
}
finally
{
try
{
if(input!=null)
input.close();
}
catch(IOException e)
{
}
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();
//必须把name==null放在前面，否则会发生NullPointerExceptin，这个很好理解，
//当我们按了取消后，name会成为空，那么name.equals("")就会发生异常
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
{
}
/*class Filters implements FilenameFilter
{
public boolean accept(File dir,String name)
{
return (name.endsWith(".exe"));
}
}*/
}
posted on 2006-02-19 00:32 samuel's blog 阅读(24248) 评论(43) 编辑 收藏 举报
