'app\api\service\order\PaySuccess', OrderTypeEnum::SHARING => 'app\api\service\sharing\order\PaySuccess', OrderTypeEnum::RECHARGE => 'app\api\service\recharge\PaySuccess', ]; /** * 构造函数 * WxPay constructor. * @param $config */ public function __construct($config = false) { parent::__construct(); $this->config = $config; $this->config !== false && $this->setConfig($this->config['app_id'], $this->config['app_secret']); } /** * 统一下单API * @param $order_no * @param $openid * @param $totalFee * @param int $orderType 订单类型 * @return array * @throws BaseException */ public function unifiedorder($order_no, $openid, $totalFee, $orderType = OrderTypeEnum::MASTER) { // 当前时间 $time = time(); // 生成随机字符串 $nonceStr = md5($time . $openid); // API参数 $params = [ 'appid' => $this->appId, 'attach' => json_encode(['order_type' => $orderType]), 'body' => $order_no, 'mch_id' => $this->config['mchid'], 'nonce_str' => $nonceStr, 'notify_url' => base_url() . 'notice.php', // 异步通知地址 'openid' => $openid, 'out_trade_no' => $order_no, 'spbill_create_ip' => \request()->ip(), 'total_fee' => $totalFee * 100, // 价格:单位分 'trade_type' => 'JSAPI', ]; // 生成签名 $params['sign'] = $this->makeSign($params); // 记录日志 $this->doLogs(['name' => '微信支付统一下单API', 'params' => $params]); // 请求API $url = 'https://api.mch.weixin.qq.com/pay/unifiedorder'; $result = $this->post($url, $this->toXml($params)); $prepay = $this->fromXml($result); // 请求失败 if ($prepay['return_code'] === 'FAIL') { throw new BaseException(['msg' => "微信支付api：{$prepay['return_msg']}", 'code' => -10]); } if ($prepay['result_code'] === 'FAIL') { throw new BaseException(['msg' => "微信支付api：{$prepay['err_code_des']}", 'code' => -10]); } // 生成 nonce_str 供前端使用 $paySign = $this->makePaySign($params['nonce_str'], $prepay['prepay_id'], $time); return [ 'prepay_id' => $prepay['prepay_id'], 'nonceStr' => $nonceStr, 'timeStamp' => (string)$time, 'paySign' => $paySign ]; } /** * 支付成功异步通知 * @throws BaseException * @throws \Exception * @throws \think\exception\DbException */ public function notify() { // $xml = << // // // // // // // // // // // // // //1 // // // //EOF; if (!$xml = file_get_contents('php://input')) { $this->returnCode(false, 'Not found DATA'); } // 将服务器返回的XML数据转化为数组 $data = $this->fromXml($xml); // 记录日志 $this->doLogs($xml); $this->doLogs($data); // 实例化订单模型 $model = $this->getOrderModel($data['out_trade_no'], $data['attach']); // 订单信息 $order = $model->getOrderInfo(); empty($order) && $this->returnCode(false, '订单不存在'); // 小程序配置信息 $wxConfig = WxappModel::getWxappCache($order['wxapp_id']); // 设置支付秘钥 $this->config['apikey'] = $wxConfig['apikey']; // 保存微信服务器返回的签名sign $dataSign = $data['sign']; // sign不参与签名算法 unset($data['sign']); // 生成签名 $sign = $this->makeSign($data); // 判断签名是否正确 判断支付状态 if ( ($sign !== $dataSign) || ($data['return_code'] !== 'SUCCESS') || ($data['result_code'] !== 'SUCCESS') ) { $this->returnCode(false, '签名失败'); } // 订单支付成功业务处理 $status = $model->onPaySuccess(PayTypeEnum::WECHAT, $data); if ($status == false) { $this->returnCode(false, $model->getError()); } // 返回状态 $this->returnCode(true, 'OK'); } /** * 申请退款API * @param $transaction_id * @param double $total_fee 订单总金额 * @param double $refund_fee 退款金额 * @return bool * @throws BaseException */ public function refund($transaction_id, $total_fee, $refund_fee) { // 当前时间 $time = time(); // 生成随机字符串 $nonceStr = md5($time . $transaction_id . $total_fee . $refund_fee); // API参数 $params = [ 'appid' => $this->appId, 'mch_id' => $this->config['mchid'], 'nonce_str' => $nonceStr, 'transaction_id' => $transaction_id, 'out_refund_no' => $time, 'total_fee' => $total_fee * 100, 'refund_fee' => $refund_fee * 100, ]; // 生成签名 $params['sign'] = $this->makeSign($params); // 请求API $url = 'https://api.mch.weixin.qq.com/secapi/pay/refund'; $result = $this->post($url, $this->toXml($params), true, $this->getCertPem()); // 请求失败 if (empty($result)) { throw new BaseException(['msg' => '微信退款api请求失败']); } // 格式化返回结果 $prepay = $this->fromXml($result); // 记录日志 log_write(['describe' => '微信退款API', [ 'params' => $params, 'result' => $result, 'prepay' => $prepay ]]); // 请求失败 if ($prepay['return_code'] === 'FAIL') { throw new BaseException(['msg' => 'return_msg: ' . $prepay['return_msg']]); } if ($prepay['result_code'] === 'FAIL') { throw new BaseException(['msg' => 'err_code_des: ' . $prepay['err_code_des']]); } return true; } /** * 企业付款到零钱API * @param $order_no * @param $openid * @param $amount * @param $desc * @return bool * @throws BaseException */ public function transfers($order_no, $openid, $amount, $desc) { // API参数 $params = [ 'mch_appid' => $this->appId, 'mchid' => $this->config['mchid'], 'nonce_str' => md5(uniqid()), 'partner_trade_no' => $order_no, 'openid' => $openid, 'check_name' => 'NO_CHECK', 'amount' => $amount * 100, 'desc' => $desc, 'spbill_create_ip' => \request()->ip(), ]; // 生成签名 $params['sign'] = $this->makeSign($params); // 请求API $url = 'https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers'; $result = $this->post($url, $this->toXml($params), true, $this->getCertPem()); // 请求失败 if (empty($result)) { throw new BaseException(['msg' => '微信退款api请求失败']); } // 格式化返回结果 $prepay = $this->fromXml($result); // 请求失败 if ($prepay['return_code'] === 'FAIL') { throw new BaseException(['msg' => 'return_msg: ' . $prepay['return_msg']]); } if ($prepay['result_code'] === 'FAIL') { throw new BaseException(['msg' => 'err_code_des: ' . $prepay['err_code_des']]); } return true; } /** * 获取cert证书文件 * @return array * @throws BaseException */ private function getCertPem() { if (empty($this->config['cert_pem']) || empty($this->config['key_pem'])) { throw new BaseException(['msg' => '请先到后台小程序设置填写微信支付证书文件']); } // cert目录 $filePath = __DIR__ . '/cert/' . $this->config['wxapp_id'] . '/'; return [ 'certPem' => $filePath . 'cert.pem', 'keyPem' => $filePath . 'key.pem' ]; } /** * 实例化订单模型 (根据attach判断) * @param $orderNo * @param null $attach * @return mixed */ private function getOrderModel($orderNo, $attach = null) { $attach = json_decode($attach, true); // 判断订单类型返回对应的订单模型 $model = $this->modelClass[$attach['order_type']]; return new $model($orderNo); } /** * 返回状态给微信服务器 * @param boolean $returnCode * @param string $msg */ private function returnCode($returnCode = true, $msg = null) { // 返回状态 $return = [ 'return_code' => $returnCode ? 'SUCCESS' : 'FAIL', 'return_msg' => $msg ?: 'OK', ]; // 记录日志 log_write([ 'describe' => '返回微信支付状态', 'data' => $return ]); die($this->toXml($return)); } /** * 生成paySign * @param $nonceStr * @param $prepay_id * @param $timeStamp * @return string */ private function makePaySign($nonceStr, $prepay_id, $timeStamp) { $data = [ 'appId' => $this->appId, 'nonceStr' => $nonceStr, 'package' => 'prepay_id=' . $prepay_id, 'signType' => 'MD5', 'timeStamp' => $timeStamp, ]; // 签名步骤一：按字典序排序参数 ksort($data); $string = $this->toUrlParams($data); // 签名步骤二：在string后加入KEY $string = $string . '&key=' . $this->config['apikey']; // 签名步骤三：MD5加密 $string = md5($string); // 签名步骤四：所有字符转为大写 $result = strtoupper($string); return $result; } /** * 将xml转为array * @param $xml * @return mixed */ private function fromXml($xml) { // 禁止引用外部xml实体 libxml_disable_entity_loader(true); return json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true); } /** * 生成签名 * @param $values * @return string 本函数不覆盖sign成员变量，如要设置签名需要调用SetSign方法赋值 */ private function makeSign($values) { //签名步骤一：按字典序排序参数 ksort($values); $string = $this->toUrlParams($values); //签名步骤二：在string后加入KEY $string = $string . '&key=' . $this->config['apikey']; //签名步骤三：MD5加密 $string = md5($string); //签名步骤四：所有字符转为大写 $result = strtoupper($string); return $result; } /** * 格式化参数格式化成url参数 * @param $values * @return string */ private function toUrlParams($values) { $buff = ''; foreach ($values as $k => $v) { if ($k != 'sign' && $v != '' && !is_array($v)) { $buff .= $k . '=' . $v . '&'; } } return trim($buff, '&'); } /** * 输出xml字符 * @param $values * @return bool|string */ private function toXml($values) { if (!is_array($values) || count($values) <= 0 ) { return false; } $xml = ""; foreach ($values as $key => $val) { if (is_numeric($val)) { $xml .= "<" . $key . ">" . $val . ""; } else { $xml .= "<" . $key . ">"; } } $xml .= ""; return $xml; } }