alipayclient alipayclient = new defaultalipayclient( "https://openapi.alipay.com/gateway.do" , mappid, mappkey, "json" , "utf-8" , "alipay_public_key" , "rsa2" );alipaytradepayrequest alipaytradepayrequest = new alipaytradepayrequest();tradepayparam tradepayparam = new tradepayparam();//out_trade_no:自定义参数，商户订单号，需要保证不重复tradepayparam.setout_trade_no(uuid.randomuuid().tostring()); //auth_code和scene填写需要注意 tradepayparam.setauth_code(ftoken); // 人脸zolozverify接口返回的ftoken tradepayparam.setscene( "security_code" ); //对于刷脸付，必须写为security_code tradepayparam.setsubject( "smilepay" );tradepayparam.setstore_id( "smilepay test" );tradepayparam.settimeout_express( "5m" );tradepayparam.settotal_amount(amount);alipaytradepayresponse response = alipaytradepayrequest.setbizcontent(json.tojsonstring(tradepayparam)); if (response != null && smilepay_code_success.equals(response.getcode())) { ... }