/**              * 解密              * @param message              * @param key              * @return              * @throws Exception              */              public static String decrypt(String message,String encoding) throws Exception {                        byte[] bytesrc = http://www.mamicode.com/convertHexString(message);  "DES/CBC/PKCS5Padding");                  DESKeySpec desKeySpec = new DESKeySpec(key.getBytes(encoding));                  SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");                  SecretKey secretKey = keyFactory.generateSecret(desKeySpec);                  IvParameterSpec iv = new IvParameterSpec(key.getBytes(encoding));                        cipher.init(Cipher.DECRYPT_MODE, secretKey, iv);                        byte[] retByte = cipher.doFinal(bytesrc);                  return new String(retByte,encoding);              }                    /**              * 加密              * @param message              * @param key              * @return              * @throws Exception              */              public static String encrypt(String message,String encoding) throws Exception {                  Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");                        DESKeySpec desKeySpec = new DESKeySpec(key.getBytes(encoding));                        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");                  SecretKey secretKey = keyFactory.generateSecret(desKeySpec);                  IvParameterSpec iv = new IvParameterSpec(key.getBytes(encoding));                  cipher.init(Cipher.ENCRYPT_MODE, secretKey, iv);                        byte[] buf = cipher.doFinal(message.getBytes(encoding));                                    String a = toHexString(buf).toUpperCase();                                    return a;              }                    /**              * 字符串转换为16进制数组              * @param ss              * @return              */              public static byte[] convertHexString(String ss) {                  byte digest[] = new byte[ss.length() / 2];                  for (int i = 0; i < digest.length; i++) {                      String byteString = ss.substring(2 * i, 2 * i + 2);                      int byteValue = http://www.mamicode.com/Integer.parseInt(byteString, 16);  "0" + plainText;                      hexString.append(plainText);                  }                        return hexString.toString();              }  

    byte[] enc = Base64.encode(encText.getBytes(encoding), Base64.DEFAULT);      byte[] bytesrc = http://www.mamicode.com/Base64.decode(encText.getBytes(encoding), Base64.DEFAULT);  >