官方接口文档:退款接口:https://opendocs.alipay.com/apis/api_1/alipay.trade.refund支付订单查询接口:https://opendocs.alipay.com/apis/api_1/alipay.trade.query

示例代码如下:<?php/** * 扫码支付 * 提醒:提交支付请求后微信会同步返回支付结果(没有异步回调通知)。当返回结果为“系统错误”时,商户系统等待5秒后调用【查询订单API】,查询支付实际交易结果;当返回结果为“USERPAYING”时,商户系统可设置间隔时间(建议10秒)重新查询支付结果,直到支付成功或超时(建议30秒); */namespace appapicontroller;use thinkController;use thinkDb;use thinkInput;use thinkfacaderequest;use appapicontrollerCommon;header("Access-Control-Allow-Origin:*");header("Content-type: text/html; charset=utf-8");require_once $_SERVER['DOCUMENT_ROOT'].'/vendor/Alipaydangmianfu_demo/f2fpay/model/builder/AlipayTradePayContentBuilder.php';require_once $_SERVER['DOCUMENT_ROOT'].'/vendor/Alipaydangmianfu_demo/f2fpay/service/AlipayTradeService.php';require_once $_SERVER['DOCUMENT_ROOT'].'/vendor/Alipaydangmianfu_demo/aop/AopClient.php';require_once $_SERVER['DOCUMENT_ROOT'].'/vendor/Alipaydangmianfu_demo/aop/request/AlipayTradeRefundRequest.php';/** * 支付宝当面付 * @package appapicontroller */class Alipay{/** * Notes: * User: 小海 * Time:下午 1:51 * DATE:2020/12/10 0010 */public function alipay($authCode, $totalAmount, $outTradeNo){$common = new Common();$config = array(//签名方式'sign_type' => "RSA2",//支付宝公钥//'alipay_public_key' => "/fEsraprwCtzvzQETrNRwVxLO5jVmRGi60j8Ue1efIlzPXV9je9mkjzOmdssymZkh2QhUrCmZYI/FCEa3/cNMW0QIDAQAB",'alipay_public_key' => ' rHrXw7L /HlesZSXoMsYRed7Ray6oFu/YjRTJ2e3zxkhcHjcy5pZIauuT5dz1vM6XA3q38VILGQZbK3RusYlcpNopbR5f6j8HOoIgSk3 qdmRgga2hgwhgd1JOj7R/aTmPGzTJ81E6FXCGN83PLnHYr0URgtnpjLVOg xV5fiAeWGe9SOUasW3sfqFk54WRwBOcOm70Owl9 juDhGICJObdIxrbck0ij7xkSlU89/ZcUQQ4UNLSya6jghdF8oQzeeszHR0/QCYfWELTCoxUwH46RHy9rN0IOF5OkWUCVc7ga/kRuNl Um1ryOPc3NUxwIDAQAB',//商户私钥'merchant_private_key' => " h/C3LaaCSfd38eFTsInsZxYZsOJ6HLee78aqZ9 s3MKl1pd8naA6IdGWtDzfp5NcmIdcvELuGesxGYlORYxMTX9a3Sd8hjuPyWrrCgdXlfpNIzvkb00I9pMonmR7SgAkiLxhxfRZWOdCYfdK HDuvOXWuDK7xQ9eVB/kZRzQ7S1WUMG9DPJYWe naHQlXm LZ3GBvAaqrlTofi3hYRsAcPM3S4tnJlHce2sIwOMpaBqbkRDVhtAgMBAAECggEAVs0zmH77Gt0fPMViBQj9fK46wyFQFdD9t/jCy YaVMDgWDmhSMEnwkPUeZg 8wcOkJ0cghqCFph2w7G2irAdN 2lBFDEpv4xp2HoQW0b0r7HaY5F8t 51FmRYWA2i1zEEcWoODO30zEjsFWZe3cjS5fAimXoTZeRKdO4 3CAyCtqE3/9z3OUM0LAElSzwUsc 4CXTTE1kKLUB0W1mX55jQLLRQ2amwA8j4ZJR2UBQ8I WRmfydLd70ezMKr esHCZFWxEsZMDPdcOWRJsUAUZErwstlNBGKvHFMLe96wrCyuiRYx1Aath24 4oEr8Zuw5b5ISxMQC49akWrhUWBggQKBgQDo2SyHU JcYh2hYD30gwUM7uU9EerXt3 84p6nFkHXMAWQwsciwHJfZULcBw392xQCTAkGtUTStSDYq92Xfo57w7gRiiI4QN4glIIfP9WrefBlrd RZVC98/zX7ZeAJgbIvaUSlpywuPY Zc02BnHFMSDvpGTYTFGyPCwa6rOwKBgQCW7M1myaGB/aCxeMaCvBQNdPrwuKHaSjOzPh6iKb6iU1XlmZV3GWc rTqm/RGs08uC4HKg16s2DGMXVE5VqIPObmn2mZyBd5rJrvcwWi6DKxfHYDjNJ0eO/xCFAFGeu0cc3rxiMEtMT/WtI0tsMM3TIiZZFNynOBVdwDzmt1dAdwKBgDlj9caxFTTB9h2lVAAC6rql4Cr7u6o9BhaPmMPaBfKwE309dXOq/FESuUEMOcdYVhLvBV/0 I9BqfDCZ7TdWeGs5EciTYkBCfZGBRWjULjcWC 46EKXtzpk/7SBGMfO/X74ogvAP13U7td7vvaYHsWrRIpJ6MPVLWlLhCfnhv6rAoGAPMhd6NmnnAyjXRZBDIHmqYzFS5FwTdO4gqWv/KtHRWS oVt7YJ3wgMOPbZVaOvqJacovICv7niba ZhQfBsECm1Za6Ft8I5U3okCsIyBUv5V80wDVExPe32qD4aTWJQgDbZ tCSzDqbdUL94LrhxDGkifJn0S7xAjqNPY7PPBf0CgYAMG7Buyxb1ZLQq7X/0ippM1kQIBOYcmxyK5r7CHcgRmBFmNf9BzWEClunDOCrY5USD6LK Z XnXX2q4XkKCxug8iVWBPh4lsqd Tsn0orDE7JRcoDwl8QwkjdlsalPq8tOv/A91YM2GRI3oWHiC9TyBLds3BgwmO0vaivhtJNVyA==",//编码格式'charset' => "UTF-8",//支付宝网关'gatewayUrl' => "https://openapi.alipay.com/gateway.do",//应用ID'app_id' => "123423",//异步通知地址,只有扫码支付预下单可用'notify_url' => "",//最大查询重试次数'MaxQueryRetry' => "10",//查询间隔'QueryDuration' => "3");// (必填) 商户网站订单系统中唯一订单号,64个字符以内,只能包含字母、数字、下划线,// 需保证商户系统端不能重复,建议通过数据库sequence生成,//$outTradeNo = "Dsx" . date('Ymdhis') . mt_rand(100, 1000);$subject = "第三巷条形码支付";//$totalAmount = $_POST['payAmount'];// (必填) 订单总金额,单位为元,不能超过1亿元// (必填) 付款条码,用户支付宝钱包手机app点击“付款”产生的付款条码//$authCode = $_POST['auth_code']; //28开头18位数字// 支付超时,线下扫码交易定义为5分钟$timeExpress = "5m";// 创建请求builder,设置请求参数$barPayRequestBuilder = new AlipayTradePayContentBuilder();$barPayRequestBuilder->setOutTradeNo($outTradeNo);$barPayRequestBuilder->setTotalAmount($totalAmount);$barPayRequestBuilder->setAuthCode($authCode);$barPayRequestBuilder->setTimeExpress($timeExpress);$barPayRequestBuilder->setSubject($subject);// 调用barPay方法获取当面付应答$barPay = new AlipayTradeService($config);$barPayResult = $barPay->barPay($barPayRequestBuilder);switch ($barPayResult->getTradeStatus()) {case "SUCCESS"://echo "支付宝支付成功:" . "<br>--------------------------<br>";$data = $barPayResult->getResponse();$result = $common->returnway(2000, "支付宝支付成功!", $data);return json_encode($result);break;case "FAILED"://echo "支付宝支付失败!!!" . "<br>--------------------------<br>";if (!empty($barPayResult->getResponse())) {$data = $barPayResult->getResponse();$result = $common->returnway(2002, "支付宝支付失败!", $data);return json_encode($result);}break;case "UNKNOWN"://echo "系统异常,订单状态未知!!!" . "<br>--------------------------<br>";if (!empty($barPayResult->getResponse())) {$result = $common->returnway(4000, "系统异常,订单状态未知!", $barPayResult->getResponse());return json_encode($result);}break;default:echo "不支持的交易状态,交易返回异常!!!";break;}return;}/** * 支付宝退货处理 * 退货前提是必须支付成功 * @$out_trade_no平台订单号 * @$wepay_serial支付宝交易号 * @$totalFee//退款金额 */public function alipayRefund($out_trade_no, $wepay_serial, $totalFee){$aop = new AopClient ();$aop->gatewayUrl = 'https://openapi.alipay.com/gateway.do';$aop->appId = '12342312';$aop->alipayrsaPublicKey = ' rHrXw7L /HlesZSXoMsYRed7Ray6oFu/YjRTJ2e3zxkhcHjcy5pZIauuT5dz1vM6XA3q38VILGQZbK3RusYlcpNopbR5f6j8HOoIgSk3 qdmRgga2hgwhgd1JOj7R/aTmPGzTJ81E6FXCGN83PLnHYr0URgtnpjLVOg xV5fiAeWGe9SOUasW3sfqFk54WRwBOcOm70Owl9 juDhGICJObdIxrbck0ij7xkSlU89/ZcUQQ4UNLSya6jghdF8oQzeeszHR0/QCYfWELTCoxUwH46RHy9rN0IOF5OkWUCVc7ga/kRuNl Um1ryOPc3NUxwIDAQAB';$aop->rsaPrivateKey = ' h/C3LaaCSfd38eFTsInsZxYZsOJ6HLee78aqZ9 s3MKl1pd8naA6IdGWtDzfp5NcmIdcvELuGesxGYlORYxMTX9a3Sd8hjuPyWrrCgdXlfpNIzvkb00I9pMonmR7SgAkiLxhxfRZWOdCYfdK HDuvOXWuDK7xQ9eVB/kZRzQ7S1WUMG9DPJYWe naHQlXm LZ3GBvAaqrlTofi3hYRsAcPM3S4tnJlHce2sIwOMpaBqbkRDVhtAgMBAAECggEAVs0zmH77Gt0fPMViBQj9fK46wyFQFdD9t/jCy YaVMDgWDmhSMEnwkPUeZg 8wcOkJ0cghqCFph2w7G2irAdN 2lBFDEpv4xp2HoQW0b0r7HaY5F8t 51FmRYWA2i1zEEcWoODO30zEjsFWZe3cjS5fAimXoTZeRKdO4 3CAyCtqE3/9z3OUM0LAElSzwUsc 4CXTTE1kKLUB0W1mX55jQLLRQ2amwA8j4ZJR2UBQ8I WRmfydLd70ezMKr esHCZFWxEsZMDPdcOWRJsUAUZErwstlNBGKvHFMLe96wrCyuiRYx1Aath24 4oEr8Zuw5b5ISxMQC49akWrhUWBggQKBgQDo2SyHU JcYh2hYD30gwUM7uU9EerXt3 84p6nFkHXMAWQwsciwHJfZULcBw392xQCTAkGtUTStSDYq92Xfo57w7gRiiI4QN4glIIfP9WrefBlrd RZVC98/zX7ZeAJgbIvaUSlpywuPY Zc02BnHFMSDvpGTYTFGyPCwa6rOwKBgQCW7M1myaGB/aCxeMaCvBQNdPrwuKHaSjOzPh6iKb6iU1XlmZV3GWc rTqm/RGs08uC4HKg16s2DGMXVE5VqIPObmn2mZyBd5rJrvcwWi6DKxfHYDjNJ0eO/xCFAFGeu0cc3rxiMEtMT/WtI0tsMM3TIiZZFNynOBVdwDzmt1dAdwKBgDlj9caxFTTB9h2lVAAC6rql4Cr7u6o9BhaPmMPaBfKwE309dXOq/FESuUEMOcdYVhLvBV/0 I9BqfDCZ7TdWeGs5EciTYkBCfZGBRWjULjcWC 46EKXtzpk/7SBGMfO/X74ogvAP13U7td7vvaYHsWrRIpJ6MPVLWlLhCfnhv6rAoGAPMhd6NmnnAyjXRZBDIHmqYzFS5FwTdO4gqWv/KtHRWS oVt7YJ3wgMOPbZVaOvqJacovICv7niba ZhQfBsECm1Za6Ft8I5U3okCsIyBUv5V80wDVExPe32qD4aTWJQgDbZ tCSzDqbdUL94LrhxDGkifJn0S7xAjqNPY7PPBf0CgYAMG7Buyxb1ZLQq7X/0ippM1kQIBOYcmxyK5r7CHcgRmBFmNf9BzWEClunDOCrY5USD6LK Z XnXX2q4XkKCxug8iVWBPh4lsqd Tsn0orDE7JRcoDwl8QwkjdlsalPq8tOv/A91YM2GRI3oWHiC9TyBLds3BgwmO0vaivhtJNVyA==';$aop->apiVersion = '1.0';$aop->signType = 'RSA2';$aop->postCharset = 'UTF-8';$aop->format = 'json';$request = new AlipayTradeRefundRequest ();$bizcontent = json_encode(['out_trade_no' => $out_trade_no,'trade_no' => $wepay_serial,'refund_amount' => $totalFee,'refund_reason' => '正常退款']);$request->setBizContent($bizcontent);$result = $aop->execute($request);$responseNode = str_replace(".", "_", $request->getApiMethodName()) . "_response";$resultCode = $result->$responseNode->code;if (!empty($resultCode) && $resultCode == 10000) {return 1000;} else {return -1;}}}

在你的管理后台调取支付类中的alipayRefund()即可!每天带你们了解咱们周围常见产品的实现原理,不明白的地方可以私聊我!