import java.awt.BorderLayout; import java.awt.GridBagLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.FocusEvent; import java.awt.event.FocusListener; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.util.Properties;
import javax.swing.BorderFactory; import javax.swing.ButtonGroup; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JFileChooser; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JRadioButton; import javax.swing.JTextField; import javax.swing.border.Border;
// 切割类 public class Split extends InitFrame{
private static final long serialVersionUID = 1L; public Split() {
super("文件切割","file_split.png",440,260); this.setDefaultCloseOperation (JFrame.DISPOSE_ON_CLOSE);
initGUI(); this.setVisible(true);
}
public void initGUI() { // 设置布局 BorderLayout b = new BorderLayout(); this.setLayout(b); this.setResizable(false); // 创建面板 northPanel = new JPanel(); centerPanel = new JPanel(); // 将面板添加到窗体 this.add(northPanel,BorderLayout.NORTH); this.add(centerPanel,BorderLayout.CENTER); // 设置面板布局 northPanel.setLayout(new GridBagLayout()); centerPanel.setLayout(null);
// 设置北部面板 radio_M = new JRadioButton("M(兆)",true); radio_M.setActionCommand("M"); radio_K = new JRadioButton("K(千字节)"); radio_K.setActionCommand("K"); bg = new ButtonGroup(); bg.add(radio_M); bg.add(radio_K);
field_size = new JTextField(4); // 添加焦点监听器当失去焦点时候 获取输入的大小 field_size.addActionListener( listener); northPanel.add(field_size,new GBC(0,0)); northPanel.add(radio_M,new GBC(1,0)); northPanel.add(radio_K,new GBC(2,0)); Border border = BorderFactory.createTitledBorder("请输入分隔的大小"); northPanel.setBorder(border); // 设置中部面板 label_1 = new JLabel("请选择源文件："); centerPanel.add(label_1); label_1.setBounds(20,10 , 120, 30); label_2 = new JLabel("请选择目标文件夹："); centerPanel.add(label_2); label_2.setBounds(20, 50, 150, 30); //用来显示源文件地址（要切割的文件） field_1 = new JTextField(40); centerPanel.add(field_1); field_1.addActionListener(listener); field_1.setBounds(130, 10, 200, 30); //用来显示目标文件夹地址（切割后存放发地点） field_2 = new JTextField(40); centerPanel.add(field_2); field_2.addActionListener(listener); field_2.setBounds(130, 50,200, 30); //用来获取源文件（要切割的文件） button_1= new JButton("选择",new ImageIcon(Split.class.getResource("/resources/open.png"))); centerPanel.add(button_1); button_1.setBounds(350, 10, 80, 30); button_1.addActionListener(listener); //用来获取目标文件夹（切割后存放发地点） button_2= new JButton("选择",new ImageIcon(Split.class.getResource("/resources/open.png"))); centerPanel.add(button_2); button_2.addActionListener(listener); button_2.setBounds(350, 50, 80, 30); // 下部面板 // 切割文件 button_Split = new JButton("切割",new ImageIcon(Split.class.getResource("/resources/split.png"))); centerPanel.add(button_Split); button_Split.addActionListener(listener); button_Split.setBounds(80, 100, 130, 30); // 打开目标文件夹 button_open = new JButton("打开目标文件夹",new ImageIcon(Split.class.getResource("/resources/open_dir.png"))); centerPanel.add(button_open); button_open.addActionListener(listener); button_open.setBounds(250, 100, 140, 30); }
private class ChoiceListener implements ActionListener { public void actionPerformed(ActionEvent e) { if(e.getSource().equals(button_1)) {
if(radio_M.isSelected()) { // 当用户没有输入信息便选择文件时，给予提示信息 if(field_size.getText().isEmpty()) { JLabel label_result = new JLabel("切割文件大小不可为空，请重新输入！！"); JOptionPane.showConfirmDialog(Split.this, label_result,"文件切割-提示信息", JOptionPane.INFORMATION_MESSAGE,JOptionPane.OK_OPTION, new ImageIcon(Split.class.getResource("/resources/null.png"))); }else{ size =Integer.parseInt(field_size.getText());//即选择的是 M（兆） if(size<0||size>1024) { JLabel label_result = new JLabel("输入的切割文件大小不合法，请重新输入！！"); JOptionPane.showConfirmDialog(Split.this, label_result,"文件切割-提示信息", JOptionPane.INFORMATION_MESSAGE,JOptionPane.OK_OPTION, new ImageIcon(Split.class.getResource("/resources/result.png"))); } size = 1024*1024*size;//1024 字节乘以1024字节是1M 再乘以size，获取的size得到实际的大小 } }else if(radio_K.isSelected()) { // 当用户没有输入信息便选择文件时，给予提示信息 if(field_size.getText().isEmpty()) { JLabel label_result = new JLabel("切割文件大小不可为空，请重新输入！！"); JOptionPane.showConfirmDialog(Split.this, label_result,"文件切割-提示信息", JOptionPane.INFORMATION_MESSAGE,JOptionPane.OK_OPTION, new ImageIcon(Split.class.getResource("/resources/null.png"))); }else{ size =Integer.parseInt(field_size.getText());//即选择的是 M（千字节） if(size<0||size>1024*1024) { JLabel label_result = new JLabel("输入的切割文件大小不合法，请重新输入！！"); JOptionPane.showConfirmDialog(Split.this, label_result,"文件切割-提示信息", JOptionPane.INFORMATION_MESSAGE,JOptionPane.OK_OPTION, new ImageIcon(Split.class.getResource("/resources/result.png"))); } size = 1024*size;//1024 表示千字节再乘以size，获取的size得到实际的大小 } } JFileChooser chooser = new JFileChooser(); // 只许选择文件 chooser.setFileSelectionMode(JFileChooser.FILES_ONLY); // 不允许同时选中多个文件 chooser.setMultiSelectionEnabled (false);
int returnVal = chooser.showOpenDialog(Split.this); if(returnVal == JFileChooser.APPROVE_OPTION) { // 获取选择的文件 file_source= chooser.getSelectedFile(); // 获取的文件名 fileName = file_source.getName(); // 将获取的源文件名显示 field_1.setText(file_source.getAbsolutePath()); }
}else if(e.getSource().equals(button_2)) { // 如果输入的文件大小大于源文件，要求重新输入 if(file_source.length()<size) { showWarningInfo(); } JFileChooser chooser = new JFileChooser();
// 只许选择文件夹 chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY); // 不允许同时选中多个文件夹 chooser.setMultiSelectionEnabled (false);
int returnVal = chooser.showOpenDialog(Split.this); if(returnVal == JFileChooser.APPROVE_OPTION) { // 获取选择的目标文件夹 file_dir= chooser.getSelectedFile(); // 将获取的目标文件名显示 field_2.setText(file_dir.getAbsolutePath()); } }else if(e.getSource().equals(button_Split)) { splitFile(file_source); }else if(e.getSource().equals(button_open)) { // 获取目标文件目录路径 String file_dir_path = file_dir.getAbsolutePath(); // 打开目标文件目录 Runtime r = Runtime.getRuntime(); try { r.exec("cmd.exe /c start "+file_dir_path); } catch (IOException e1) { // 打开存放切割目录失败是给予提示 JLabel label_result = new JLabel("打开目标目录失败！！"); JOptionPane.showConfirmDialog(Split.this, label_result,"文件切割-打开目录", JOptionPane.INFORMATION_MESSAGE,JOptionPane.OK_OPTION, new ImageIcon(Split.class.getResource("/resources/null.png"))); } } } // 当输入的切割内容大于文件大小时给予警告信息 private void showWarningInfo() {
JLabel label_result = new JLabel("输入的切割文件大小大于源文件，请重新输入！！"); JOptionPane.showConfirmDialog(Split.this, label_result,"文件切割-提示信息", JOptionPane.INFORMATION_MESSAGE,JOptionPane.OK_OPTION, new ImageIcon(Split.class.getResource("/resources/succes.png"))); } // 根据获取的信息切割文件 private void splitFile(File file_source) { try { FileInputStream fis = new FileInputStream(file_source); byte [] buf =new byte[size]; FileOutputStream fos =null; int len = 0; int count =1; String dir_path =file_dir.getAbsolutePath(); Properties prop = new Properties(); while((len = fis.read(buf))!=-1) { fos = new FileOutputStream(new File(dir_path,(count++)+".split")); fos.write(buf, 0, len); fos.close(); } // 将被切割的文件信息存储到文件信息中 prop.setProperty("splitcount", count+""); prop.setProperty("filename", fileName); fos = new FileOutputStream(new File(dir_path,count+".properties")); prop.store(fos, "saved file information"); // 关闭流 fos.close(); fis.close(); showSuccessInfo(); } catch (FileNotFoundException e) { showFailedInfo(); } catch (IOException e1) { showFailedInfo(); } } private void showSuccessInfo() { JLabel label_result = new JLabel("文件已经成功切割到目标文件夹！！"); JOptionPane.showConfirmDialog(Split.this, label_result,"文件切割-提示信息", JOptionPane.INFORMATION_MESSAGE,JOptionPane.OK_OPTION, new ImageIcon(Split.class.getResource("/resources/succes.png"))); } // 打开切割文件失败是给予提示 private void showFailedInfo() { JLabel label_result = new JLabel("打开源文件失败，可能之前切割文件已存在请清理后再切割！！"); JOptionPane.showConfirmDialog(Split.this, label_result,"文件切割-打开源文件", JOptionPane.INFORMATION_MESSAGE,JOptionPane.OK_OPTION, new ImageIcon(Split.class.getResource("/resources/result.png"))); } }
private ChoiceListener listener = new ChoiceListener(); private JPanel northPanel; private JPanel centerPanel; private ButtonGroup bg ; private JRadioButton radio_M; private JRadioButton radio_K; private JTextField field_size; private JLabel label_1; private JLabel label_2; private JTextField field_1; private JTextField field_2; private JButton button_1; private JButton button_2; private JButton button_Split; private JButton button_open; private int size=0;//用来获取用户输入的文件分隔大小 private File file_source=null;//用来获取源文件 private File file_dir=null;//用来获取目标文件夹文件 private String fileName="";//用来获取源文件名
}
原文链接：https://blog.csdn.net/w605283073/article/details/46572449
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