Java加密另一个文件夹内的文件夹中的文件

Question

我尝试自己解决此问题，但似乎找不到解决方法。我正在使用Java AES遍历文件夹中的所有文件来加密文件夹。现在，我还想对所选文件夹内的文件夹内的文件进行加密，有人可以帮忙吗？

这是我用于遍历所选文件夹的代码。

Arrays.asList(filelist).forEach(file -> {

    try {
        encrypting = fileProcessor(Cipher.ENCRYPT_MODE, FolderKey.getText(), file, file);

        FolderProgress.progressProperty().unbind();
        FolderProgress.progressProperty().bind(encrypting.progressProperty());
        encrypting.messageProperty().addListener(new ChangeListener<String>() {
            @Override
            public void changed(ObservableValue<? extends String> observable, String oldValue, String newValue) {

                System.out.println(newValue);
            }
        });
        new Thread(encrypting).start();
    } catch (InvalidKeyException e) {
        //Dsiplay error message if the key is wrong.
        Alert alert = new Alert(Alert.AlertType.ERROR);
        alert.setContentText("Incorrect password!");
        alert.showAndWait();
        System.err.println("Couldn't encrypt " + file.getName() + ": " + e.getMessage());
    }
});

这是加密方法：

public Task fileProcessor(int cipherMode, String key, File inputFile, File outputFile) {
    return new Task() {
        @Override
        protected Object call() throws Exception {

            try {
                Key secretKey = new SecretKeySpec(key.getBytes(), "AES");
                Cipher cipher = Cipher.getInstance("AES");
                cipher.init(cipherMode, secretKey);
                //getting ourr input file in bytes.
                FileInputStream inputStream = new FileInputStream(inputFile);
                byte[] inputBytes = new byte[(int) inputFile.length()];
                inputStream.read(inputBytes);

                byte[] outputBytes = cipher.doFinal(inputBytes);
                //Writing out to our output file
                FileOutputStream outputStream = new FileOutputStream(outputFile);
                outputStream.write(outputBytes);
                //clossing the input and output streams.
                inputStream.close();
                outputStream.close();
                //This for loop is for our progress indicator, it sleeps for half a second for each loop
                //Thus it takes it 5 secs to complete the loop and our task.
                for (int i = 0; i < 10; i++) {
                    //sleep for 5 secs.
                    Thread.sleep(500);
                    updateMessage("500 milliseconds");
                    //update the progress.
                    updateProgress(i + 1, 10);
                }

            } catch (NoSuchPaddingException | NoSuchAlgorithmException
                    | InvalidKeyException | BadPaddingException
                    | IllegalBlockSizeException | IOException e) {

                e.printStackTrace();
            } catch (java.security.InvalidKeyException ex) {
                //Dsiplaying error message if the kkey entered is wrong.
                Alert alert = new Alert(Alert.AlertType.ERROR);
                alert.setContentText("Incorrect password!");
                alert.showAndWait();
                Logger.getLogger(Controller.class.getName()).log(Level.SEVERE, null, ex);
            }
            return true;
        }
    };
}