微信H5支付（公司项目笔记）

向右看齐 2021-09-16 12:34 432阅读 0赞

1.跳转后台

mui.openWindow({
                    url: "后台网址PayH5.php?payMoney=" + n + "&buyContent=" + buyContent + "&uid=" + uid,
                    waiting: {
                        autoShow: true, //自动显示等待框，默认为true
                        title: '正在加载支付页面......', //等待对话框上显示的提示内容
                    }
    
                })

--------------------

2.配置参数 统一下单

*      <?php
        
        require_once ("wechatAppPay.class.php");
        
        
        //以下参数是微信公众号参数，登录微信公众平台和商户平台就可以拿到
        //微信公众号需要设置网页授权域名，添加支付目录，业务域名，js安全域名
        define('APPID','公众号的appid');
        define('APIKEY','公众号的apikey');
        define('MCH_ID','商户号');
        define('NOTIFY_URL','回调地址');
        
        
        
        //生成随机字符串
        function getNonceNum($numLen=16){
            $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
            $str = "";
            for ($i = 0; $i < $numLen; $i++) {
                $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
            }
            return $str;
        }
        function getOrderId()
        {
            //日期:10位 timestamp
            $datetime = time();
            //随机数
            $newnum = getNonceNums();
            return $datetime . $newnum;
        }
        //生成随机数字
        function getNonceNums($numLen=4){
            $chars = "0123456789";
            $str = "";
            for ($i = 0; $i < $numLen; $i++) {
                $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
            }
            return $str;
        }
        
        //获取用户ip地址
        function getClientIp(){
            if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) {
                $ip = getenv('HTTP_CLIENT_IP');
            } elseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) {
                $ip = getenv('HTTP_X_FORWARDED_FOR');
            } elseif(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) {
                $ip = getenv('REMOTE_ADDR');
            } elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) {
                $ip = $_SERVER['REMOTE_ADDR'];
            }
            return preg_match ( '/[\d\.]{7,15}/', $ip, $matches ) ? $matches [0] : '';
        }
        
        
        $getNonceNumstring = getNonceNum();//随机数
        $out_trade_no =  getOrderId();//生成订单号
        $ip = getClientIp();//取客户端IP
        
        $payMoney = $_GET['payMoney'];
        $uid = $_GET['uid'];
        $buyContent = $_GET['buyContent'];
        
        // 连接数据库
        $dbms = 'mysql';
        $dbName = '数据库名';
        $user = '用户名';
        $pwd = '密码';
        $host = 'host';
        $charset = 'utf8';
        $dsn = "$dbms:host=$host;dbname=$dbName;charset=$charset";
        
        $pdo = new mysqli($host, $user, $pwd,$dbName);
        
        //if ($pdo->connect_error) {
        //    die("Connect Failed: " . $pdo->connect_error);
        //}
        //
        //echo "Connected Success!";
        
        //更新数据库
        $sql = "INSERT INTO ldd_withdraw (id,uid,amount,paytype,type,pay_result,out_trade_no) VALUES (uuid(),'$uid', $payMoney,2,1,0,$out_trade_no)";
        if ($pdo->query($sql) === true) {
            echo "Table guests insert Successfully";
        } else {
            echo "Create Error: " . $sql . "<br>" . $pdo->error;
        }
        
        $pdo->close();
        
        //统一下单参数
        $param['appid']             = APPID;
        $param['mch_id']            = MCH_ID;
        $param['nonce_str']         = $getNonceNumstring;
        $param['body']              = $buyContent;
        $param['out_trade_no']      = $out_trade_no;
        $param['total_fee']         = 1;
        $param['spbill_create_ip']  = $ip;
        $param['notify_url']        = NOTIFY_URL;
        $param['trade_type']        = "MWEB"; //H5 支付类型
        
        
        $wechatAppPay = new wechatAppPay(APPID, MCH_ID, NOTIFY_URL, APIKEY);//实例化微信支付类对象
        
        $sign =  $wechatAppPay->MakeSign($param);//生成支付签名
        
        
        
        $result = $wechatAppPay->unifiedOrder( $param );; // result中就是返回的各种信息
        
        
        //如果下单成功会返回如下信息,这里已经转成了数组，按数组的方式操作就可以了。
        
        
        $tiaozhuanurl = $result['mweb_url']."&redirect_url=https://luoluotech.com/lddClient/html/pages/wode.html";
        
        
        echo $tiaozhuanurl;
        
        
        //redirect_url 为支付成功或取消支付之后跳转的地址
        ?>
        
        <script>
        
            window.location.href='<?php echo $tiaozhuanurl;?>'
        
        </script>
    
    3.框架
 *      <?php
        
        /**
         * 微信支付服务器端下单
         * 微信APP支付文档地址:  https://pay.weixin.qq.com/wiki/doc/api/app.php?chapter=8_6
         * 使用示例
         *  构造方法参数
         *      'appid'     =>  //填写微信分配的公众账号ID
         *      'mch_id'    =>  //填写微信支付分配的商户号
         *      'notify_url'=>  //填写微信支付结果回调地址
         *      'key'       =>  //填写微信商户支付密钥
         *  );
         *  统一下单方法
         *  $WechatAppPay = new wechatAppPay($options);
         *  $params['body'] = '商品描述';                   //商品描述
         *  $params['out_trade_no'] = '1217752501201407';   //自定义的订单号，不能重复
         *  $params['total_fee'] = '100';                   //订单金额 只能为整数 单位为分
         *  $params['trade_type'] = 'APP';                  //交易类型 JSAPI | NATIVE |APP | WAP
         *  $wechatAppPay->unifiedOrder( $params );
        新版微信支付(APP支付)没有了服务端demo，并且老版本的php服务端demo也不能使用了，需要商户自己开发来实现。
        仔细看了下微信支付提供的接口说明，开发起来也不是那么复杂，完全可以把这些放到一个php中，后续方便其他项目的调用。
        参考了csdn的一篇文章及下载资料，先把php代码贴出来。
         */
        class wechatAppPay
        {
            //接口API URL前缀
            const API_URL_PREFIX = 'https://api.mch.weixin.qq.com';
            //下单地址URL
            const UNIFIEDORDER_URL = "/pay/unifiedorder";
            //查询订单URL
            const ORDERQUERY_URL = "/pay/orderquery";
            //关闭订单URL
            const CLOSEORDER_URL = "/pay/closeorder";
            //公众账号ID
            private $appid;
            //商户号
            private $mch_id;
            //随机字符串
            private $nonce_str;
            //签名
            private $sign;
            //商品描述
            private $body;
            //微信用户号
            private $openid;
            //商户订单号
            private $out_trade_no;
            //支付总金额
            private $total_fee;
            //终端IP
            private $spbill_create_ip;
            //支付结果回调通知地址
            private $notify_url;
            //交易类型
            private $trade_type;
            //支付密钥
            private $key;
            //证书路径
            private $SSLCERT_PATH;
            private $SSLKEY_PATH;
            //所有参数
            private $params = array();
            public function __construct($appid, $mch_id, $notify_url, $key)
            {
                $this->appid = $appid;
                $this->mch_id = $mch_id;
                $this->notify_url = $notify_url;
                $this->key = $key;
            }
            /**
             * 下单方法
             * @param   $params 下单参数
             */
            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 = $params['trade_type'];
                $this->nonce_str = $this->genRandomString();
                $this->spbill_create_ip = $params['spbill_create_ip'];
        //            $this->openid =  $params['openid'];
                $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;
                //获取签名数据
                $this->sign = $this->MakeSign( $this->params );
                $this->params['sign'] = $this->sign;
        
                $xml = $this->data_to_xml($this->params);
                $myfile = fopen("xml.txt", "a") or die("Unable to open file!");
                fwrite($myfile, date('Y-m-d H:i:s').'\r\n'.$xml."\r\n");
                fclose($myfile);
        
                $response = $this->postXmlCurl($xml, self::API_URL_PREFIX.self::UNIFIEDORDER_URL);
                if( !$response ){
                    return false;
                }
                $result = $this->xml_to_data( $response );
        
                $myfile = fopen("xml.txt", "a") or die("Unable to open file!");
                fwrite($myfile, date('Y-m-d H:i:s').'\r\n'.$response."\r\n");
                fclose($myfile);
                if( !empty($result['result_code']) && !empty($result['err_code']) ){
                    $result['err_msg'] = $this->error_code( $result['err_code'] );
                }
                return $result;
            }
            /**
             * 查询订单信息
             * @param $out_trade_no     订单号
             * @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;
                //获取签名数据
                $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;
            }
            /**
             * 关闭订单
             * @param $out_trade_no     订单号
             * @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;
                //获取签名数据
                $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;
            }
            /**
             *
             * 获取支付结果通知数据
             * return array
             */
            public function getNotifyData(){
                //获取通知的数据
                $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;
            }
            /**
             * 接收通知成功后应答输出XML数据
             * @param string $xml
             */
            public function replyNotify(){
                $data['return_code'] = 'SUCCESS';
                $data['return_msg'] = 'OK';
                $xml = $this->data_to_xml( $data );
                echo $xml;
                die();
            }
            /**
             * 生成APP端支付参数
             * @param  $prepayid   预支付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;
            }
            /**
             * 生成签名
             *  @return 签名
             */
            public function MakeSign( $params ){
                //签名步骤一：按字典序排序数组参数
                ksort($params);
                $string = $this->ToUrlParams($params);
                //签名步骤二：在string后加入KEY
                $string = $string . "&key=".$this->key;
                //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;
            }
            /**
             * 将参数拼接为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;
            }
            /**
             * 输出xml字符
             * @param   $params     参数名称
             * return   string      返回组装的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;
            }
            /**
             * 将xml转为array
             * @param string $xml
             * return array
             */
            public function xml_to_data($xml){
                if(!$xml){
                    return false;
                }
                //将XML转为array
                //禁止引用外部xml实体
                libxml_disable_entity_loader(true);
                $data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
                return $data;
            }
            /**
             * 获取毫秒级别的时间戳
             */
            private static function getMillisecond(){
                //获取毫秒的时间戳
                $time = explode ( " ", microtime () );
                $time = $time[1] . ($time[0] * 1000);
                $time2 = explode( ".", $time );
                $time = $time2[0];
                return $time;
            }
            /**
             * 产生一个指定长度的随机字符串,并返回给用户
             * @param type $len 产生字符串的长度
             * @return string 随机字符串
             */
            private function genRandomString($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;
                // 将数组打乱
                shuffle($chars);
                $output = "";
                for ($i = 0; $i < $len; $i++) {
                    $output .= $chars[mt_rand(0, $charsLen)];
                }
                return $output;
            }
            /**
             * 以post方式提交xml到对应的接口url
             *
             * @param string $xml  需要post的xml数据
             * @param string $url  url
             * @param bool $useCert 是否需要证书，默认不需要
             * @param int $second   url执行超时时间，默认30s
             * @throws WxPayException
             */
            private function postXmlCurl($xml, $url, $useCert = false, $second = 30){
                $ch = curl_init();
                //设置超时
                curl_setopt($ch, CURLOPT_TIMEOUT, $second);
                curl_setopt($ch,CURLOPT_URL, $url);
                curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);
                curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,2);
                //设置header
                curl_setopt($ch, CURLOPT_HEADER, FALSE);
                //要求结果为字符串且输出到屏幕上
                curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
                if($useCert == true){
                    //设置证书
                    //使用证书：cert 与 key 分别属于两个.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);
                //运行curl
                $data = curl_exec($ch);
                //返回结果
                if($data){
                    curl_close($ch);
                    return $data;
                } else {
                    $error = curl_errno($ch);
                    curl_close($ch);
                    return false;
                }
            }
            /**
             * 错误代码
             * @param  $code       服务器输出的错误代码
             * return string
             */
            public function error_code( $code ){
                $errList = array(
                    'NOAUTH'                =>  '商户未开通此接口权限',
                    'NOTENOUGH'             =>  '用户帐号余额不足',
                    'ORDERNOTEXIST'         =>  '订单号不存在',
                    'ORDERPAID'             =>  '商户订单已支付，无需重复操作',
                    'ORDERCLOSED'           =>  '当前订单已关闭，无法支付',
                    'SYSTEMERROR'           =>  '系统错误!系统超时',
                    'APPID_NOT_EXIST'       =>  '参数中缺少APPID',
                    'MCHID_NOT_EXIST'       =>  '参数中缺少MCHID',
                    'APPID_MCHID_NOT_MATCH' =>  'appid和mch_id不匹配',
                    'LACK_PARAMS'           =>  '缺少必要的请求参数',
                    'OUT_TRADE_NO_USED'     =>  '同一笔交易不能多次提交',
                    'SIGNERROR'             =>  '参数签名结果不正确',
                    'XML_FORMAT_ERROR'      =>  'XML格式错误',
                    'REQUIRE_POST_METHOD'   =>  '未使用post传递参数 ',
                    'POST_DATA_EMPTY'       =>  'post数据不能为空',
                    'NOT_UTF8'              =>  '未使用指定编码格式',
                );
                if( array_key_exists( $code , $errList ) ){
                    return $errList[$code];
                }
            }
        
        }