String alipayValue ="^(25|26|27|28|29|30)\d{14,22}$";
Pattern alipayPattern = Pattern.compile(alipayValue);
Matcher alipayMatcher = alipayPattern.matcher(auth_code);
if(alipayMatcher.find()){//间连支付宝
belongsPay = "pay.alipay.micropay";
responseParams.setString(ApsTradeMsgTag.Kft_Product_No,belongsPay);
requestParams.setString(ApsTradeMsgTagAlipay.AUTH_CODE, auth_code);
requestParams.setString(ApsTradeMsgTagAlipay.SUBJECT,body);
requestParams.setString(ApsTradeMsgTagAlipay.BODY, body);
requestParams.setString(ApsTradeMsgTagAlipay.APPID, subAppId);
}
参考网址：https://www.cnblogs.com/leevanes/p/6561204.html