docs: public static RefundNotifyReqInfo decryptRefundNotifyReqInfo(String req_info, String key) {
  		try {
  			Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding");
  			Key sKeySpec = new SecretKeySpec(DigestUtils.md5Hex(key).getBytes(), "AES");
  			cipher.init(Cipher.DECRYPT_MODE, sKeySpec);
  			byte[] resultByte = cipher.doFinal(Base64.decodeBase64(req_info));
  			String data = new String(PKCS7Encoder.decode(resultByte));
  			return XMLConverUtil.convertToObject(RefundNotifyReqInfo.class, data);
  		} catch (Exception e) {
  			logger.error("", e);
  		}
  		return null;
  	}