使用AES算法对文件进行加密/解密的操作(JAVA)

很简单，直接上代码。

/**     * AES方式解密文件     * @param sourceFile     * @return     */    public File decryptFile(File sourceFile,String fileType,String sKey){        File decryptFile = null;        InputStream inputStream = null;        OutputStream outputStream = null;        try {            decryptFile = File.createTempFile(sourceFile.getName(),fileType);            Cipher cipher = initAESCipher(sKey,Cipher.DECRYPT_MODE);            inputStream = new FileInputStream(sourceFile);            outputStream = new FileOutputStream(decryptFile);            CipherOutputStream cipherOutputStream = new CipherOutputStream(outputStream, cipher);            byte [] buffer = new byte [1024];            int r;            while ((r = inputStream.read(buffer)) >= 0) {                cipherOutputStream.write(buffer, 0, r);            }            cipherOutputStream.close();        } catch (IOException e) {            e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.        }finally {            try {                inputStream.close();            } catch (IOException e) {                e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.            }            try {                outputStream.close();            } catch (IOException e) {                e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.            }        }        return decryptFile;    }