code: public static String des(String code) throws InvalidKeyException, NoSuchAlgorithmException,
              NoSuchPaddingException, UnsupportedEncodingException, IllegalBlockSizeException, BadPaddingException {
          return JavaEncrypt.decryptDES(code, "DES");
      }
docs: des解密
  
  @param code {@link String}
  
  @return {@link String}
  
  @throws InvalidKeyException 异常
  @throws NoSuchAlgorithmException 异常
  @throws NoSuchPaddingException 异常
  @throws UnsupportedEncodingException 异常
  @throws IllegalBlockSizeException 异常
  @throws BadPaddingException 异常