php - Bank QR code payment access problem

Question

Recently I was working on the bank's QR code payment access. After getting the document, there were a few things I didn't quite understand. 1. Downloaded the private key (.sm2) and public key (.cer) of the signed certificate and imported the public key directly. I don’t know how to use the private key certificate. 2. Since I am using the PHP demo, the PHP code is adjusted by calling LAJP. Took JAV...

黄舟 · Answer

一、第一个问题，带证书，应该使用curl
 /**
     *     作用：使用证书，以post方式提交xml到对应的接口url
     */
    function postXmlSSLCurl($xml, $url, $second = 30, $wxpay_config) {
            $ch = curl_init();
            //超时时间
            curl_setopt($ch, CURLOPT_TIMEOUT, $second);
            //这里设置代理，如果有的话
            
            curl_setopt($ch, CURLOPT_URL, $url);
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
            //设置header
            curl_setopt($ch, CURLOPT_HEADER, FALSE);
            //要求结果为字符串且输出到屏幕上
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
            //设置证书
            //使用证书：cert 与 key 分别属于两个.pem文件
            //默认格式为PEM，可以注释
            curl_setopt($ch, CURLOPT_SSLCERTTYPE, 'PEM');
            curl_setopt($ch, CURLOPT_SSLCERT, $wxpay_config['SSLCERT_PATH']);
            //默认格式为PEM，可以注释
            curl_setopt($ch, CURLOPT_SSLKEYTYPE, 'PEM');
            curl_setopt($ch, CURLOPT_SSLKEY, $wxpay_config['SSLKEY_PATH']);
            //post提交方式
            curl_setopt($ch, CURLOPT_POST, true);
            curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
            $data = curl_exec($ch);
            //返回结果
            if ($data) {
                curl_close($ch);
                return $data;
            } else {
                $error = curl_errno($ch);
                echo "curl出错，错误码:$error" . "
";
                // echo "错误原因查询
";
                curl_close($ch);
                return false;
            }
    }

二、签名的话
你试着用PHP同样的参数自己生产签名跟java环境比对看看。一般来说应该是不能共用的吧。之前遇到过app里面的微信支付通过php生成的签名给过来app用，这个之前好像是行不通的。