java实现的文件切割器

import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.io.*; /** * The main frame of the application FileCutor * @author brady * @version 1.0 */ public class MainFrame extends JFrame implements ActionListener { public final static String IDS_APP_TITLE = "FileCutor 1.0"; public final static String IDS_CUT = "切割文件"; public final static String IDS_MERGE = "合并文件"; public final static String IDS_OPEN_FILE = "请选择操作文件"; public final static String IDS_SAVE_PATH = "请选择保存路径"; public final static int ID_CUT_MODE = 1; public final static int ID_MERGE_MODE = 2; public final static int ID_MB_UNIT = 0; public final static int ID_KB_UNIT = 1; public final static int ID_BYTE_UNIT = 2; public final static int ID_BUFFER_SIZE = 4096; //4KB public final static int ID_FILE_CUT = 0x01 << 0; public final static int ID_FILE_MERGE = 0x01 << 1; public final static int ID_FILE_ENCRYPT = 0x01 << 2; private String[] m_aUnit = {"MB","KB","Byte"}; Thread m_thread = null; JButton m_btnClose = null; JButton m_btnCutFile = null; JButton m_btnChooseFile = null; JButton m_btnChoosePath = null; JRadioButton m_rdCutFile = null; JRadioButton m_rdMergeFile = null; JCheckBox m_cbEncryptFile = null; JTextArea m_taFileNames = null; JTextArea m_taSavePath = null; JTextField m_tfBlockSize = null; JComboBox m_combUnit = null; JFileChooser m_fcFile = null; JProgressBar m_proBar = null; int m_nWorkMode = ID_CUT_MODE; //1:cut,2:merge int m_nSizeUnit = ID_MB_UNIT; //0:MB,1:KB,2:Byte long m_nBlockSize = 0; boolean m_bEncrypt = false; boolean m_bIsWorking = false; String[] m_aFiles = null; String m_sSavePath = null; public MainFrame(String title) { super(title); m_fcFile = new JFileChooser(); init(); } public void init() { Container cp = getContentPane(); JPanel mainPanel = new JPanel(); mainPanel.setLayout(new BoxLayout(mainPanel,BoxLayout.Y_AXIS)); mainPanel.setBorder(BorderFactory.createEmptyBorder(10,10,10,10)); JPanel topPanel = createTopPanel(); JPanel filePanel = createFilePanel(); JPanel proBarPanel = createProgressBarPanel(); JPanel btnPanel = createButtonPanel(); topPanel.setAlignmentX(Component.LEFT_ALIGNMENT); filePanel.setAlignmentX(Component.LEFT_ALIGNMENT); proBarPanel.setAlignmentX(Component.LEFT_ALIGNMENT); btnPanel.setAlignmentX(Component.LEFT_ALIGNMENT); mainPanel.add(topPanel); mainPanel.add(Box.createRigidArea(new Dimension(0,8))); mainPanel.add(filePanel); mainPanel.add(Box.createRigidArea(new Dimension(0,8))); mainPanel.add(proBarPanel); mainPanel.add(Box.createRigidArea(new Dimension(0,8))); mainPanel.add(btnPanel); mainPanel.add(Box.createRigidArea(new Dimension(0,8))); cp.add(mainPanel); pack(); setResizable(false); centerInScreen(); getRootPane().setDefaultButton(m_btnCutFile); setVisible(true); } public JPanel createTopPanel() { JPanel panel = new JPanel(); ButtonGroup bg = new ButtonGroup(); m_rdCutFile = new JRadioButton(IDS_CUT,true); m_rdMergeFile = new JRadioButton(IDS_MERGE,false); m_rdCutFile.addActionListener(this); m_rdMergeFile.addActionListener(this); bg.add(m_rdCutFile); bg.add(m_rdMergeFile); panel.setBorder(BorderFactory.createTitledBorder("请选择操作类型")); panel.setLayout(new BoxLayout(panel,BoxLayout.X_AXIS)); panel.add(Box.createRigidArea(new Dimension(20,0))); panel.add(m_rdCutFile); panel.add(m_rdMergeFile); panel.add(Box.createHorizontalGlue()); return panel; } public JPanel createFilePanel() { JPanel panel = new JPanel(); panel.setBorder(BorderFactory.createTitledBorder("请选择操作文件")); panel.setLayout(new BoxLayout(panel,BoxLayout.Y_AXIS)); m_btnChooseFile = new JButton("浏览..."); m_btnChooseFile.addActionListener(this); m_btnChooseFile.setAlignmentY(Component.TOP_ALIGNMENT); MouseAdapter mouseAdapter = new MouseAdapter() { //Call this method when mouse is clicked public void mouseClicked(MouseEvent e) { String str = m_taFileNames.getText(); if(str == null || str.length() <= 0) return; int nCaretPos = m_taFileNames.getCaretPosition(); int beginPos = 0,endPos = 0; beginPos = str.lastIndexOf('\n', nCaretPos); beginPos = beginPos != -1 ? beginPos : 0 ; endPos = str.indexOf('\n', nCaretPos); endPos = endPos != -1 ? endPos : str.length(); m_taFileNames.select(beginPos,endPos); } }; m_taFileNames = new JTextArea(1,28); m_taFileNames.addMouseListener(mouseAdapter); JLabel lblFile = new JLabel(" 源文件: "); lblFile.setAlignmentY(Component.TOP_ALIGNMENT); JScrollPane sPane = new JScrollPane(m_taFileNames); sPane.setAlignmentY(Component.TOP_ALIGNMENT); //top panel JPanel topPanel = new JPanel(); topPanel.setLayout(new BoxLayout(topPanel,BoxLayout.X_AXIS)); topPanel.add(Box.createRigidArea(new Dimension(20,0))); topPanel.add(lblFile); topPanel.add(sPane); topPanel.add(m_btnChooseFile); topPanel.add(Box.createHorizontalGlue()); //mid panel JPanel midPanel = new JPanel(); midPanel.setLayout(new BoxLayout(midPanel,BoxLayout.X_AXIS)); midPanel.add(Box.createRigidArea(new Dimension(20,0))); JLabel lblSaveTo = new JLabel(" 保存至: "); lblSaveTo.setAlignmentY(Component.TOP_ALIGNMENT); m_taSavePath = new JTextArea(1,28); JScrollPane pathSP = new JScrollPane(m_taSavePath); pathSP.setAlignmentY(Component.TOP_ALIGNMENT); m_btnChoosePath = new JButton("浏览..."); m_btnChoosePath.addActionListener(this); m_btnChoosePath.setAlignmentY(Component.TOP_ALIGNMENT); midPanel.add(lblSaveTo); midPanel.add(pathSP); midPanel.add(m_btnChoosePath); midPanel.add(Box.createGlue()); //bottom panel JPanel bottomPanel = new JPanel(); bottomPanel.setLayout(new BoxLayout(bottomPanel,BoxLayout.X_AXIS)); JLabel lblSize = new JLabel(" 块大小: "); lblSize.setAlignmentY(Component.TOP_ALIGNMENT); m_tfBlockSize = new JTextField(8); m_tfBlockSize.setAlignmentY(Component.TOP_ALIGNMENT); m_combUnit = new JComboBox(m_aUnit); m_combUnit.setAlignmentY(Component.TOP_ALIGNMENT); m_combUnit.addActionListener(this); bottomPanel.add(Box.createRigidArea(new Dimension(20,0))); bottomPanel.add(lblSize); bottomPanel.add(m_tfBlockSize); bottomPanel.add(m_combUnit); bottomPanel.add(Box.createRigidArea(new Dimension(200,0))); bottomPanel.add(Box.createHorizontalGlue()); panel.add(topPanel); panel.add(midPanel); panel.add(bottomPanel); panel.add(Box.createVerticalGlue()); return panel; } public JPanel createProgressBarPanel() { JPanel panel = new JPanel(); m_proBar = new JProgressBar(0,100) { public Dimension getPreferredSize() { return new Dimension(m_taFileNames.getSize().width + 4, 24); } }; m_proBar.setStringPainted(true); panel.setLayout(new FlowLayout(FlowLayout.LEFT)); panel.add(new JLabel(" 操作进度 ")); panel.add(m_proBar); return panel; } public JPanel createButtonPanel() { JPanel panel = new JPanel(); m_cbEncryptFile = new JCheckBox("切割时进行加密保护"); m_cbEncryptFile.addActionListener(this); m_cbEncryptFile.setAlignmentX(Component.LEFT_ALIGNMENT); m_btnCutFile = new JButton(IDS_CUT); m_btnCutFile.addActionListener(this); m_btnClose = new JButton("退出系统"); m_btnClose.addActionListener(this); panel.setLayout(new BoxLayout(panel,BoxLayout.X_AXIS)); panel.add(m_cbEncryptFile); panel.add(Box.createHorizontalGlue()); panel.add(m_btnCutFile); panel.add(m_btnClose); return panel; } public void centerInScreen() { Toolkit tk = Toolkit.getDefaultToolkit(); Dimension screenDim = tk.getScreenSize(); Dimension dlgDim = getSize(); int x,y; x = (screenDim.width - dlgDim.width) / 2; y