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                ### 場景介紹 適用于商戶在移動端APP中集成微信支付功能。 商戶APP調用微信提供的SDK調用微信支付模塊,商戶APP會跳轉到微信中完成支付,支付完后跳回到商戶APP內,最后展示支付結果。 目前微信支付支持手機系統有:IOS(蘋果)、Android(安卓)和WP(Windows Phone)。 ### 文檔參考 https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=8_1 ### 開發步驟 1.生成客戶端支付參數 調用統一下單接口獲取預授權id,使用預授權id進行二次簽名生成客戶端調起微信支付所需的參數 2.支付結果通知處理 支付完成后,微信會把相關支付結果和用戶信息發送給商戶,商戶需要接收處理,并返回應答。 對后臺通知交互時,如果微信收到商戶的應答不是成功或超時,微信認為通知失敗,微信會通過一定的策略定期重新發起通知,盡可能提高通知的成功率,但微信不保證通知最終能成功。 ### 原創微信app支付SDK *注:官方沒提供* ~~~ <?php namespace app\pay\tool; /** * 微信支付服務器端下單 * @author lzw * 微信APP支付文檔地址: https://pay.weixin.qq.com/wiki/doc/api/app.php?chapter=8_6 * 使用示例 * $options = array( * 'appid' => '**********', //填寫微信分配的公眾賬號ID * 'mchid' => '********', //填寫微信支付分配的商戶號 * 'notify_url'=> 'http://www.baidu.com/', //填寫微信支付結果回調地址 * 'key' => ''**********'' //填寫微信商戶支付密鑰 * ); * 統一下單方法 * $WechatAppPay = new wechatAppPay($options); * $params['body'] = '商品描述'; //商品描述 * $params['out_trade_no'] = '1217752501201407'; //自定義的訂單號 * $params['total_fee'] = '100'; //訂單金額 只能為整數 單位為分 * $wechatAppPay->unifiedOrder( $params ); */ class WxpayAppSDK { //接口API URL前綴 const API_URL_PREFIX = 'https://api.mch.weixin.qq.com'; //下單地址URL const UNIFIEDORDER_URL = "/pay/unifiedorder"; //查詢訂單URL const ORDERQUERY_URL = "/pay/orderquery"; //關閉訂單URL const CLOSEORDER_URL = "/pay/closeorder"; //公眾賬號ID private $appid; //商戶號 private $mch_id; //隨機字符串 private $nonce_str; //簽名 private $sign; //商品描述 private $body; //商戶訂單號 private $out_trade_no; //支付總金額 private $total_fee; //終端IP private $spbill_create_ip; //支付結果回調通知地址 private $notify_url; //交易類型 private $trade_type; //支付密鑰 private $key; //證書路徑 private $SSLCERT_PATH; private $SSLKEY_PATH; // 保存錯誤信息 public $errorMsg = ''; //所有參數 private $params = array(); /** * 傳入配置信息 * $options = array( * 'appid' => '**********', //填寫微信分配的公眾賬號ID * 'mchid' => '********', //填寫微信支付分配的商戶號 * 'notify_url'=> 'http://www.baidu.com/', //填寫微信支付結果回調地址 * 'key' => ''**********'' //填寫微信商戶支付密鑰 * ); * WxpayApp constructor. * @param $options */ public function __construct($options) { $this->appid = isset($options['appid']) ? $options['appid'] : ''; $this->mch_id = isset($options['mchid']) ? $options['mchid'] : ''; $this->notify_url = isset($options['notify_url']) ? $options['notify_url'] : ''; $this->key = isset($options['key']) ? $options['key'] : ''; } /** * 下單方法->統一下單接口 * @link https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=9_1 * @param $params 下單參數 */ public function unifiedOrder($params) { $this->body = $params['body']; $this->out_trade_no = $params['out_trade_no']; $this->total_fee = $params['total_fee']; $this->trade_type = 'APP';//交易類型 JSAPI | NATIVE |APP | WAP $this->nonce_str = $this->genRandomString(); $this->spbill_create_ip = $_SERVER['REMOTE_ADDR']; $this->params['appid'] = $this->appid; $this->params['mch_id'] = $this->mch_id; $this->params['nonce_str'] = $this->nonce_str; $this->params['body'] = $this->body; $this->params['out_trade_no'] = $this->out_trade_no; $this->params['total_fee'] = $this->total_fee; $this->params['spbill_create_ip'] = $this->spbill_create_ip; $this->params['notify_url'] = $this->notify_url; $this->params['trade_type'] = $this->trade_type; //獲取簽名數據 $this->sign = $this->MakeSign($this->params); $this->params['sign'] = $this->sign; $xml = $this->data_to_xml($this->params); $response = $this->postXmlCurl($xml, self::API_URL_PREFIX . self::UNIFIEDORDER_URL); if (!$response) { return false; } $result = $this->xml_to_data($response); if (!empty($result['result_code']) && !empty($result['err_code'])) { $result['err_msg'] = $this->error_code($result['err_code']); } return $result; } /** * 查詢訂單信息 * @param $out_trade_no 訂單號 * @return array */ public function orderQuery($out_trade_no) { $this->params['appid'] = $this->appid; $this->params['mch_id'] = $this->mch_id; $this->params['nonce_str'] = $this->genRandomString(); $this->params['out_trade_no'] = $out_trade_no; //獲取簽名數據 $this->sign = $this->MakeSign($this->params); $this->params['sign'] = $this->sign; $xml = $this->data_to_xml($this->params); $response = $this->postXmlCurl($xml, self::API_URL_PREFIX . self::ORDERQUERY_URL); if (!$response) { return false; } $result = $this->xml_to_data($response); if (!empty($result['result_code']) && !empty($result['err_code'])) { $result['err_msg'] = $this->error_code($result['err_code']); } return $result; } /** * 關閉訂單 * @param $out_trade_no 訂單號 * @return array */ public function closeOrder($out_trade_no) { $this->params['appid'] = $this->appid; $this->params['mch_id'] = $this->mch_id; $this->params['nonce_str'] = $this->genRandomString(); $this->params['out_trade_no'] = $out_trade_no; //獲取簽名數據 $this->sign = $this->MakeSign($this->params); $this->params['sign'] = $this->sign; $xml = $this->data_to_xml($this->params); $response = $this->postXmlCurl($xml, self::API_URL_PREFIX . self::CLOSEORDER_URL); if (!$response) { return false; } $result = $this->xml_to_data($response); return $result; } /** * * 獲取支付結果通知數據 * return array */ public function getNotifyData() { //獲取通知的數據 $xml = $GLOBALS['HTTP_RAW_POST_DATA']; $data = array(); if (empty($xml)) { return false; } $data = $this->xml_to_data($xml); if (!empty($data['return_code'])) { if ($data['return_code'] == 'FAIL') { return false; } } return $data; } /** * 驗證通知簽名 */ public function verifyNotify($data) { $sign = $data['sign']; unset($data['sign']); if ($sign != $this->MakeSign($data)) { return false; } else { return true; } } /** * 接收通知成功后應答輸出XML數據 * @param string $xml */ public function replyNotifySuccess() { $data['return_code'] = 'SUCCESS'; $data['return_msg'] = 'OK'; $xml = $this->data_to_xml($data); echo $xml; die(); } /** * 接收通知失敗后應答輸出XML數據 * @param string $xml */ public function replyNotifyFail() { $data['return_code'] = 'Fail'; $data['return_msg'] = '處理訂單失敗'; $xml = $this->data_to_xml($data); echo $xml; die(); } /** * 二次簽名,用于客戶端調用微信客戶端 * @link https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=9_7&index=3 * 生成APP端支付參數 * @param $prepayid 預支付id */ public function getAppPayParams($prepayid) { $data['appid'] = $this->appid; $data['partnerid'] = $this->mch_id; $data['prepayid'] = $prepayid; $data['package'] = 'Sign=WXPay'; $data['noncestr'] = $this->genRandomString(); $data['timestamp'] = time(); $data['sign'] = $this->MakeSign($data); return $data; } /** * 快速獲取簽名數據給客戶端 * @param $param * $params['body'] = '商品描述'; //商品描述 * $params['out_trade_no'] = '1217752501201407'; //自定義的訂單號 * $params['total_fee'] = '100'; //訂單金額 只能為整數 單位為分 * @return mixed */ public function getAppPaySign($params) { $result = $this->unifiedOrder($params); if ($result['return_code'] == 'SUCCESS' && $result['result_code'] == 'SUCCESS') { $data = $this->getAppPayParams($result['prepay_id']); return $data; } else { // $result['return_msg'] 注意跟蹤失敗原因 $this->errorMsg = $result['return_msg']; return false; } } /** * 生成簽名 * @return 簽名 */ public function MakeSign($params) { //簽名步驟一:按字典序排序數組參數 ksort($params); $string = $this->ToUrlParams($params); //簽名步驟二:在string后加入KEY $string = $string . "&key=" . $this->key; //簽名步驟三:MD5加密 $string = md5($string); //簽名步驟四:所有字符轉為大寫 $result = strtoupper($string); return $result; } /** * 將參數拼接為url: key=value&key=value * @param $params * @return string */ public function ToUrlParams($params) { $string = ''; if (!empty($params)) { $array = array(); foreach ($params as $key => $value) { $array[] = $key . '=' . $value; } $string = implode("&", $array); } return $string; } /** * 輸出xml字符 * @param $params 參數名稱 * return string 返回組裝的xml **/ public function data_to_xml($params) { if (!is_array($params) || count($params) <= 0) { return false; } $xml = "<xml>"; foreach ($params as $key => $val) { if (is_numeric($val)) { $xml .= "<" . $key . ">" . $val . "</" . $key . ">"; } else { $xml .= "<" . $key . "><![CDATA[" . $val . "]]></" . $key . ">"; } } $xml .= "</xml>"; return $xml; } /** * 將xml轉為array * @param string $xml * return array */ public function xml_to_data($xml) { if (!$xml) { return false; } //將XML轉為array //禁止引用外部xml實體 libxml_disable_entity_loader(true); $data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true); return $data; } /** * 獲取毫秒級別的時間戳 */ private static function getMillisecond() { //獲取毫秒的時間戳 $time = explode(" ", microtime()); $time = $time[1] . ($time[0] * 1000); $time2 = explode(".", $time); $time = $time2[0]; return $time; } /** * 產生一個指定長度的隨機字符串,并返回給用戶 * @param type $len 產生字符串的長度 * @return string 隨機字符串 */ private function genRandomString($len = 32) { $chars = array( "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9" ); $charsLen = count($chars) - 1; // 將數組打亂 shuffle($chars); $output = ""; for ($i = 0; $i < $len; $i++) { $output .= $chars[mt_rand(0, $charsLen)]; } return $output; } /** * 以post方式提交xml到對應的接口url * * @param string $xml 需要post的xml數據 * @param string $url url * @param bool $useCert 是否需要證書,默認不需要 * @param int $second url執行超時時間,默認30s * @throws WxPayException */ private function postXmlCurl($xml, $url, $useCert = false, $second = 30) { $ch = curl_init(); //設置超時 curl_setopt($ch, CURLOPT_TIMEOUT, $second); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2); //設置header curl_setopt($ch, CURLOPT_HEADER, FALSE); //要求結果為字符串且輸出到屏幕上 curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE); if ($useCert == true) { //設置證書 //使用證書:cert 與 key 分別屬于兩個.pem文件 curl_setopt($ch, CURLOPT_SSLCERTTYPE, 'PEM'); //curl_setopt($ch,CURLOPT_SSLCERT, WxPayConfig::SSLCERT_PATH); curl_setopt($ch, CURLOPT_SSLKEYTYPE, 'PEM'); //curl_setopt($ch,CURLOPT_SSLKEY, WxPayConfig::SSLKEY_PATH); } //post提交方式 curl_setopt($ch, CURLOPT_POST, TRUE); curl_setopt($ch, CURLOPT_POSTFIELDS, $xml); //運行curl $data = curl_exec($ch); //返回結果 if ($data) { curl_close($ch); return $data; } else { $error = curl_errno($ch); curl_close($ch); return false; } } /** * 錯誤代碼 * @param $code 服務器輸出的錯誤代碼 * return string */ public function error_code($code) { $errList = array( 'NOAUTH' => '商戶未開通此接口權限', 'NOTENOUGH' => '用戶帳號余額不足', 'ORDERNOTEXIST' => '訂單號不存在', 'ORDERPAID' => '商戶訂單已支付,無需重復操作', 'ORDERCLOSED' => '當前訂單已關閉,無法支付', 'SYSTEMERROR' => '系統錯誤!系統超時', 'APPID_NOT_EXIST' => '參數中缺少APPID', 'MCHID_NOT_EXIST' => '參數中缺少MCHID', 'APPID_MCHID_NOT_MATCH' => 'appid和mch_id不匹配', 'LACK_PARAMS' => '缺少必要的請求參數', 'OUT_TRADE_NO_USED' => '同一筆交易不能多次提交', 'SIGNERROR' => '參數簽名結果不正確', 'XML_FORMAT_ERROR' => 'XML格式錯誤', 'REQUIRE_POST_METHOD' => '未使用post傳遞參數 ', 'POST_DATA_EMPTY' => 'post數據不能為空', 'NOT_UTF8' => '未使用指定編碼格式', ); if (array_key_exists($code, $errList)) { return $errList[$code]; } } } ~~~ ### 使用案例: ~~~ <?php /** * Created by PhpStorm. * User: Administrator * Date: 2016/12/24 0024 * Time: 上午 9:33 */ namespace app\pay\tool; /** * 微信app支付 * Class WxpayApp * @package app\pay\tool */ class WxpayApp extends Pay { /** * @var WxpayAppSDK */ protected $wxpayAppSDK=null; public function __construct() { $option = config('wxpay_app'); $notifyurl = \think\Url::build('WxpayApp/notify', '', true, true); // log_debug("微信notifyurl",$notifyurl); $option['notify_url'] = $notifyurl; $this->wxpayAppSDK = new WxpayAppSDK($option); } /** * 簽名客戶端 * @param $order_num * @param $sum_pay * @param $business_type */ public function sign($order_num, $sum_pay, $business_type){ $params['body'] = config('pay_title.' . $business_type); //商品描述 $params['out_trade_no'] = $order_num; //自定義的訂單號 $params['total_fee'] = $sum_pay*100; //訂單金額 只能為整數 單位為分 $result=$this->wxpayAppSDK->getAppPaySign($params); return $result; } /** * 異步通知 * @return mixed */ public function notify(){ $data=$this->wxpayAppSDK->getNotifyData(); // log_debug("微信app支付回調",json_encode($data)); if(!$this->wxpayAppSDK->verifyNotify($data)){ $this->wxpayAppSDK->replyNotifyFail(); // log_debug("微信app支付回調","簽名失敗!"); return; } $res=$this->updateOrder($data['out_trade_no'],$data['transaction_id'],0,$data['total_fee']/100.00); if($res['code']==1){ $this->wxpayAppSDK->replyNotifySuccess(); }else{ // log_debug("微信app支付回調","修改訂單狀態失敗!"); $this->wxpayAppSDK->replyNotifyFail(); } } } ~~~
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