这个Java解密（AES128）有效， 但我有两个问题：
public class DecoderGui extends javax.swing.JPanel {
/**
* Creates new form DecoderGui
*/
public static void main(String[] args)
{
Security.addProvider(new BouncyCastleProvider());
JFrame frame = new JFrame();
frame.add( new DecoderGui());
frame.setDefaultCloseOperation( JFrame.DISPOSE_ON_CLOSE );
frame.setResizable( false );
frame.pack();
frame.setLocationRelativeTo( null );
frame.setVisible(true);
}
public DecoderGui() {
initComponents();
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
keyFile = new javax.swing.JTextField();
jLabel1 = new javax.swing.JLabel();
sourceDirectory = new javax.swing.JTextField();
destinationDirectory = new javax.swing.JTextField();
keyButton = new javax.swing.JButton();
sourceButton = new javax.swing.JButton();
destinationButton = new javax.swing.JButton();
decryptButton = new javax.swing.JButton();
exitButton = new javax.swing.JButton();
message = new javax.swing.JLabel();
jLabel1.setFont(new java.awt.Font("Tahoma", 0, 18)); // NOI18N
jLabel1.setText("Schutzstaffel Decryption");
destinationDirectory.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
destinationDirectoryActionPerformed(evt);
}
});
keyButton.setText("Key File");
keyButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
keyButtonActionPerformed(evt);
}
});
sourceButton.setText("Browse");
sourceButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
sourceButtonActionPerformed(evt);
}
});
destinationButton.setText("Save");
destinationButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
destinationButtonActionPerformed(evt);
}
});
decryptButton.setText("Decrypt");
decryptButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
decryptButtonActionPerformed(evt);
}
});
exitButton.setText("Exit");
exitButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
exitButtonActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
this.setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(84, 84, 84)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(29, 29, 29)
.addComponent(decryptButton, javax.swing.GroupLayout.PREFERRED_SIZE, 95, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(84, 84, 84)
.addComponent(exitButton, javax.swing.GroupLayout.PREFERRED_SIZE, 95, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(message, javax.swing.GroupLayout.PREFERRED_SIZE, 436, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(keyFile, javax.swing.GroupLayout.DEFAULT_SIZE, 299, Short.MAX_VALUE)
.addComponent(sourceDirectory)
.addComponent(destinationDirectory))
.addGap(43, 43, 43)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(keyButton, javax.swing.GroupLayout.PREFERRED_SIZE, 78, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(destinationButton, javax.swing.GroupLayout.PREFERRED_SIZE, 78, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addComponent(sourceButton, javax.swing.GroupLayout.PREFERRED_SIZE, 78, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(layout.createSequentialGroup()
.addGap(145, 145, 145)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 212, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap(99, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(20, 20, 20)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 33, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(31, 31, 31)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(keyFile, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(keyButton))
.addGap(33, 33, 33)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(sourceDirectory, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(sourceButton))
.addGap(34, 34, 34)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(destinationDirectory, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(destinationButton))
.addGap(27, 27, 27)
.addComponent(message)
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(decryptButton, javax.swing.GroupLayout.PREFERRED_SIZE, 33, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(exitButton, javax.swing.GroupLayout.PREFERRED_SIZE, 33, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(82, Short.MAX_VALUE))
);
}// </editor-fold>
private void exitButtonActionPerformed(java.awt.event.ActionEvent evt) {
System.exit(0);
}
private void decryptButtonActionPerformed(java.awt.event.ActionEvent evt) {
try {
if(keyFile.getText() == null || keyFile.getText().equals("")) {
message.setText("Please select the key file");
}
if(sourceDirectory.getText() == null || sourceDirectory.getText().equals("")) {
message.setText("Please select the source folder");
}
if(destinationDirectory.getText() == null || destinationDirectory.getText().equals("")) {
message.setText("Please select the destination folder");
}
Decoder decoder = new Decoder();
File sourcedir = new File(sourceDirectory.getText());
File destinationdir = new File(destinationDirectory.getText());
// System.out.println(seeder);
String seeder = new String(decoder.getFileDataToStream(keyFile.getText()));
System.out.println(seeder);
File[] directoryListing = sourcedir.listFiles();
if (directoryListing != null) {
for (File child : directoryListing) {
System.out.println(child.getCanonicalPath());
byte[] inputstream = decoder.getFileDataToStream(child.getCanonicalPath());
byte[] outputstream = decoder.decrypt(seeder, inputstream);
FileOutputStream fos = new FileOutputStream(destinationDirectory.getText()+File.separator+new String(Base64.decodeBase64(child.getName())));
fos.write(outputstream);
fos.close();
}
message.setText("Decryption done");
} else {
message.setText("Error while Listing the Source Directory Files");
}
} catch (IOException ex) {
Logger.getLogger(DecoderGui.class.getName()).log(Level.SEVERE, null, ex);
} catch (Exception ex) {
Logger.getLogger(DecoderGui.class.getName()).log(Level.SEVERE, null, ex);
}
}
private void keyButtonActionPerformed(java.awt.event.ActionEvent evt) {
JFileChooser chooser = new JFileChooser();
chooser.setCurrentDirectory(new java.io.File("."));
chooser.setDialogTitle("Choose Key File");
chooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
chooser.setAcceptAllFileFilterUsed(false);
if (chooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) {
try {
System.out.println("getCurrentDirectory(): " + chooser.getCurrentDirectory());
System.out.println("getSelectedFile() : " + chooser.getSelectedFile());
keyFile.setText(chooser.getSelectedFile().getCanonicalPath());
} catch (IOException ex) {
Logger.getLogger(DecoderGui.class.getName()).log(Level.SEVERE, null, ex);
}
} else {
System.out.println("No Selection ");
}
}
private void sourceButtonActionPerformed(java.awt.event.ActionEvent evt) {
JFileChooser chooser = new JFileChooser();
chooser.setCurrentDirectory(new java.io.File("."));
chooser.setDialogTitle("Choose Source Folder");
chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
chooser.setAcceptAllFileFilterUsed(false);
if (chooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) {
try {
System.out.println("getCurrentDirectory(): " + chooser.getCurrentDirectory());
System.out.println("getSelectedFile() : " + chooser.getSelectedFile());
sourceDirectory.setText(chooser.getSelectedFile().getCanonicalPath());
} catch (IOException ex) {
Logger.getLogger(DecoderGui.class.getName()).log(Level.SEVERE, null, ex);
}
} else {
System.out.println("No Selection ");
}
}
private void destinationButtonActionPerformed(java.awt.event.ActionEvent evt) {
JFileChooser chooser = new JFileChooser();
chooser.setCurrentDirectory(new java.io.File("."));
chooser.setDialogTitle("Choose Destination Folder");
chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
chooser.setAcceptAllFileFilterUsed(false);
if (chooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) {
try {
System.out.println("getCurrentDirectory(): " + chooser.getCurrentDirectory());
System.out.println("getSelectedFile() : " + chooser.getSelectedFile());
destinationDirectory.setText(chooser.getSelectedFile().getCanonicalPath());
} catch (IOException ex) {
Logger.getLogger(DecoderGui.class.getName()).log(Level.SEVERE, null, ex);
}
} else {
System.out.println("No Selection ");
}
}
private void destinationDirectoryActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
答案 0 :(得分：0)
问题1： 如果解密文件时出错，则代码退出for循环，因此其他文件不会被解密，请参阅下面的更正代码，并添加代码代替ToDo：
private void decryptButtonActionPerformed(java.awt.event.ActionEvent evt) {
try {
if(keyFile.getText() == null || keyFile.getText().equals("")) {
message.setText("Please select the key file");
}
if(sourceDirectory.getText() == null || sourceDirectory.getText().equals("")) {
message.setText("Please select the source folder");
}
if(destinationDirectory.getText() == null || destinationDirectory.getText().equals("")) {
message.setText("Please select the destination folder");
}
Decoder decoder = new Decoder();
File sourcedir = new File(sourceDirectory.getText());
File destinationdir = new File(destinationDirectory.getText());
// System.out.println(seeder);
String seeder = new String(decoder.getFileDataToStream(keyFile.getText()));
System.out.println(seeder);
File[] directoryListing = sourcedir.listFiles();
if (directoryListing != null) {
for (File child : directoryListing) {
try{
System.out.println(child.getCanonicalPath());
byte[] inputstream = decoder.getFileDataToStream(child.getCanonicalPath());
byte[] outputstream = decoder.decrypt(seeder, inputstream);
FileOutputStream fos = new FileOutputStream(destinationDirectory.getText()+File.separator+new String(Base64.decodeBase64(child.getName())));
fos.write(outputstream);
fos.close();
}
catch(Exception e){
// ToDo: handle the case when file was not decrypted
}
}
message.setText("Decryption done");
} else {
message.setText("Error while Listing the Source Directory Files");
}
} catch (IOException ex) {
Logger.getLogger(DecoderGui.class.getName()).log(Level.SEVERE, null, ex);
} catch (Exception ex) {
Logger.getLogger(DecoderGui.class.getName()).log(Level.SEVERE, null, ex);
}
}
问题2：获取文件夹中的所有文件夹。完整的文件夹层次结构
LinkedList<String> folders = new LinkedList<String>();
folders.add("c:\\");
while(!folders.isEmpty()){
File file = new File(folders.poll());
if(file.listFiles()!=null)
for(File dir:file.listFiles()){
if(dir.isDirectory()){
folders.add(dir.getAbsolutePath());
System.out.println("Folder " + dir.getAbsolutePath());
}
}
}