JAVA音樂播放器（二）（實現列表點選播放）
阿新 • • 發佈：2019-02-05
package kk; import java.applet.Applet; import java.applet.AudioClip; import java.awt.BorderLayout; import java.awt.EventQueue; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.border.EmptyBorder; import javax.swing.text.BadLocationException; import java.awt.CardLayout; import javax.swing.JButton; import javax.swing.JFileChooser; import javax.sound.sampled.FloatControl; import javax.sound.sampled.SourceDataLine; import javax.swing.GroupLayout; import javax.swing.GroupLayout.Alignment; import java.awt.event.ActionListener; import java.awt.event.ActionEvent; import javax.swing.LayoutStyle.ComponentPlacement; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import java.awt.event.ItemListener; import java.io.File; import java.net.MalformedURLException; import java.net.URL; import java.util.Vector; import java.awt.event.ItemEvent; import javax.swing.JMenu; import javax.swing.JTextField; import javax.swing.SwingConstants; import javax.swing.JSlider; import java.awt.event.MouseMotionAdapter; import java.awt.event.MouseEvent; import javax.swing.JScrollPane; import javax.swing.JTextPane; import java.awt.Font; import java.awt.event.MouseAdapter; import java.awt.event.MouseWheelListener; import java.awt.event.MouseWheelEvent; import javax.swing.JList; @SuppressWarnings({ "serial", "unused" }) public class Mp3 extends JFrame { private JPanel contentPane; File file;// 宣告檔案物件 int index; String filename; String ss = ""; String flag = ""; String tt = ""; @SuppressWarnings("rawtypes") Vector vt = new Vector(); JFileChooser chooser = new JFileChooser();// 建立一個檔案選擇器 private JTextField xiaoxi; boolean loop = false; AudioClip adc;// 聲音音訊剪輯物件 SourceDataLine line; private FloatControl volume = null; /** * Launch the application. */ public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { try { Mp3 frame = new Mp3(); frame.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } public String getmusic(String path) throws Exception { File rootDir = new File(path); String[] fileList = rootDir.list(); if (!rootDir.isDirectory()) { String type = "mp3"; String st = ""; if (type.equals( rootDir.getName().substring(rootDir.getName().lastIndexOf(".") + 1, rootDir.getName().length()))) { st = rootDir.getName().substring(0, rootDir.getName().lastIndexOf(".")); System.out.println(st); ss += st + "\n"; } } else { for (int i = 0; i < fileList.length; i++) { path = rootDir.getAbsolutePath() + "\\" + fileList[i]; getmusic(path); } } return null; } /** * Create the frame. */ public Mp3() { setResizable(false); setFont(new Font("微軟雅黑", Font.PLAIN, 12)); setTitle("\u97F3\u4E50\u64AD\u653E\u5668"); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setBounds(100, 100, 364, 478); JScrollPane scrollPane = new JScrollPane(); JSlider slider = new JSlider(); @SuppressWarnings("rawtypes") JList songlist = new JList(); songlist.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { if(adc!=null) adc.stop(); try { URL url; flag = (String) songlist.getSelectedValue(); tt = flag; System.out.println(ss); url = new URL("file:" + "C:\\Users\\kezeli\\Music\\Music\\" + flag + ".mp3"); adc = Applet.newAudioClip(url); } catch (MalformedURLException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } // 建立資源定 if(e.getClickCount()==2){ flag = "正在播放：" + flag; xiaoxi.setText(flag); adc.play(); } } }); songlist.setFont(new Font("微軟雅黑", Font.PLAIN, 12)); scrollPane.setViewportView(songlist); JMenuBar menuBar = new JMenuBar(); setJMenuBar(menuBar); JMenu mnNewMenu = new JMenu("\u83DC\u5355"); mnNewMenu.setFont(new Font("微軟雅黑", Font.PLAIN, 12)); menuBar.add(mnNewMenu); xiaoxi = new JTextField(); xiaoxi.setEditable(false); xiaoxi.setFont(new Font("微軟雅黑", Font.PLAIN, 12)); xiaoxi.setColumns(10); xiaoxi.setText("歡迎使用本播放器"); JMenuItem dakai = new JMenuItem("\u6253\u5F00"); dakai.setFont(new Font("微軟雅黑", Font.PLAIN, 12)); dakai.addActionListener(new ActionListener() { @SuppressWarnings("static-access") public void actionPerformed(ActionEvent e) { int value = chooser.showOpenDialog(chooser);// 接受檔案選擇器的狀態 if (value == chooser.APPROVE_OPTION) { file = chooser.getSelectedFile();// 返回選中檔案 filename = file.getName(); String flag = filename; xiaoxi.setText(flag); try { if (adc != null) adc.stop(); URL url = new URL("file:" + file.getPath());// 建立資源定位 adc = Applet.newAudioClip(url); // adc.play(); } catch (MalformedURLException e1) { // TODO Auto-generated catch block e1.printStackTrace(); System.out.println("不能播放！"); } } } }); mnNewMenu.add(dakai); JMenuItem tuichu = new JMenuItem("\u9000\u51FA"); tuichu.setFont(new Font("微軟雅黑", Font.PLAIN, 12)); tuichu.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { dispose(); if (adc != null) adc.stop(); return; } }); JMenuItem saomiao = new JMenuItem("\u626B\u63CF\u672C\u5730\u97F3\u4E50"); saomiao.addActionListener(new ActionListener() { @SuppressWarnings("unchecked") public void actionPerformed(ActionEvent e) { String path = "C:\\Users\\kezeli\\Music\\Music"; ss = ""; try { getmusic(path); String[] split = ss.split("\n"); for (int i = 0; i < split.length; i++) { vt.addElement(split[i]); songlist.setListData(vt); } } catch (Exception ee) { System.out.println("there is wrong!"); } } }); saomiao.setFont(new Font("微軟雅黑", Font.PLAIN, 12)); mnNewMenu.add(saomiao); mnNewMenu.add(tuichu); contentPane = new JPanel(); contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); setContentPane(contentPane); JButton playbtn = new JButton("\u64AD\u653E"); playbtn.setFont(new Font("微軟雅黑", Font.PLAIN, 12)); playbtn.setHorizontalAlignment(SwingConstants.LEFT); playbtn.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { adc.stop(); if (filename != null) flag = "正在播放：" + filename; else flag = "正在播放：" + tt; if (adc == null) { flag = "請選擇播放的音樂"; xiaoxi.setText(flag); return; } adc.play(); xiaoxi.setText(flag); } }); JButton stopbtn = new JButton("\u6682\u505C"); stopbtn.setFont(new Font("微軟雅黑", Font.PLAIN, 12)); stopbtn.setHorizontalAlignment(SwingConstants.LEFT); stopbtn.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { adc.stop(); if (filename != null) flag = "停止播放音樂:" + filename; else flag = "停止播放音樂:" + tt; xiaoxi.setText(flag); } }); JButton againbtn = new JButton("\u5FAA\u73AF"); againbtn.setFont(new Font("微軟雅黑", Font.PLAIN, 12)); againbtn.setHorizontalAlignment(SwingConstants.LEFT); againbtn.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { loop = !loop; flag = ""; if (loop) { adc.play(); adc.loop();// 迴圈播放 if (filename != null) flag = "迴圈播放音樂:" + filename; else flag = "迴圈播放音樂:" + tt; } else { adc.play(); if (filename != null) flag = "順序播放音樂:" + filename; else flag = "順序播放音樂:" + tt; } xiaoxi.setText(flag); } }); JButton lastbtn = new JButton("\u4E0A\u4E00\u66F2"); lastbtn.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { adc.stop(); index = songlist.getSelectedIndex(); if (index > 0) { try { URL url; songlist.setSelectedIndex(index--); flag = (String) songlist.getSelectedValue(); tt = flag; System.out.println(ss); url = new URL("file:" + "C:\\Users\\kezeli\\Music\\Music\\" + flag + ".mp3"); flag = "正在播放：" + flag; xiaoxi.setText(flag); adc = Applet.newAudioClip(url); adc.play(); } catch (MalformedURLException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } } }); lastbtn.setFont(new Font("微軟雅黑", Font.PLAIN, 12)); JButton nextbtn = new JButton("\u4E0B\u4E00\u66F2"); nextbtn.setFont(new Font("微軟雅黑", Font.PLAIN, 12)); GroupLayout gl_contentPane = new GroupLayout(contentPane); gl_contentPane .setHorizontalGroup( gl_contentPane.createParallelGroup(Alignment.LEADING) .addGroup(gl_contentPane.createSequentialGroup().addContainerGap() .addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING) .addComponent(scrollPane, GroupLayout.DEFAULT_SIZE, 372, Short.MAX_VALUE) .addComponent(xiaoxi, GroupLayout.DEFAULT_SIZE, 372, Short.MAX_VALUE) .addGroup(gl_contentPane.createSequentialGroup() .addComponent(playbtn, GroupLayout.PREFERRED_SIZE, 64, GroupLayout.PREFERRED_SIZE) .addPreferredGap(ComponentPlacement.RELATED, 66, Short.MAX_VALUE) .addComponent(stopbtn, GroupLayout.PREFERRED_SIZE, 66, GroupLayout.PREFERRED_SIZE) .addGap(58).addComponent(againbtn, GroupLayout.PREFERRED_SIZE, 64, GroupLayout.PREFERRED_SIZE)) .addComponent(slider, GroupLayout.DEFAULT_SIZE, 372, Short.MAX_VALUE) .addGroup(gl_contentPane.createSequentialGroup().addComponent(lastbtn) .addPreferredGap(ComponentPlacement.RELATED, 132, Short.MAX_VALUE) .addComponent(nextbtn))).addContainerGap())); gl_contentPane .setVerticalGroup( gl_contentPane.createParallelGroup(Alignment.TRAILING) .addGroup( gl_contentPane.createSequentialGroup() .addComponent(xiaoxi, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE) .addPreferredGap(ComponentPlacement.UNRELATED) .addGroup(gl_contentPane.createParallelGroup(Alignment.BASELINE) .addComponent(lastbtn).addComponent(nextbtn)) .addPreferredGap(ComponentPlacement.RELATED, 9, Short.MAX_VALUE) .addComponent(slider, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE).addGap(18) .addComponent(scrollPane, GroupLayout.PREFERRED_SIZE, 258, GroupLayout.PREFERRED_SIZE) .addPreferredGap(ComponentPlacement.UNRELATED) .addGroup(gl_contentPane.createParallelGroup(Alignment.BASELINE).addComponent(playbtn) .addComponent(againbtn).addComponent(stopbtn)).addContainerGap())); contentPane.setLayout(gl_contentPane); } }
本人也是在學習中，程式碼寫得有點亂，有些功能還沒有實現，有什麼錯誤希望可以指出，希望可以一起加油！