Map String,Object paymentParams = new HashMap String,Object>(7);

paymentParams.put("mch_order_no","jsdk_payment_"+System.currentTimeMillis());

paymentParams.put("way_code", PayChannelEnum.ALIPAY_QR.getCode());

paymentParams.put("amount", "1");

paymentParams.put("subject", "your goods title");

paymentParams.put("body", "your goods description");

paymentParams.put("app_id", "app_P000002052092068");

paymentParams.put("currency", "cny");

Payment payment = Payment.create(paymentParams);