PHP 微信小程序微信支付 v3

寫小程序發(fā)現(xiàn)微信支付有了v3版本, 就想著接個(gè)新的支付看看, 結(jié)果發(fā)現(xiàn),有毒,記錄一下歷程
先是統(tǒng)一下單

//統(tǒng)一下單
public function wechartAddOrder($name,$ordernumber,$money,$openid){
        $url = "https://api.mch.weixin.qq.com/v3/pay/transactions/jsapi";
        $urlarr = parse_url($url);
        $appid = config('config.appId');//appID
        $mchid = config('config.mchid');//商戶ID
        $xlid = config('config.apiXL');//API序列號
        $data = array();
        $randstr = getRanStr(16,false);//隨機(jī)字符串長度不超過32
        $time = time();
        $data['appid'] = $appid;
        $data['mchid'] = $mchid;
        $data['description'] = $name;//商品描述
        $data['out_trade_no'] = $ordernumber;//訂單編號
        $data['notify_url'] = "https://www.xffly.cn/api/admin/order/wechartCallback";//回調(diào)接口
//      $data['amount']['total'] = $money;//金額
        $data['amount']['total'] = 1;
        $data['payer']['openid'] = $openid;//用戶openID
        $data = json_encode($data); 
        $key = $this->getSign($data,$urlarr['path'],$randstr,$time);//簽名
        $token = sprintf('mchid="%s",serial_no="%s",nonce_str="%s",timestamp="%d",signature="%s"',$mchid,$xlid,$randstr,$time,$key);//頭部信息
        $header  = array(
            'Content-Type:'.'application/json; charset=UTF-8',
            'Accept:application/json',
            'User-Agent:*/*',
            'Authorization: WECHATPAY2-SHA256-RSA2048 '.$token
        );  
        $ret = curl_post_https($url,$data,$header);
        return $ret;
    }

計(jì)算簽名, 也是按照文檔弄了好多遍

//微信支付簽名
public function getSign($data=array(),$url,$randstr,$time){
        $str = "POST"."\n".$url."\n".$time."\n".$randstr."\n".$data."\n";
        $key = file_get_contents('apiclient_key.pem');//在商戶平臺下載的秘鑰
        $str = getSha256WithRSA($str,$key);
        return $str;
    }

通過統(tǒng)一下單接口得到prepay_id
在小程序里面用他的wx.requestPayment接口調(diào)起支付,沒啥含量,不貼代碼了,照著文檔寫
其中調(diào)起支付還需要一個(gè)簽名,同理

//調(diào)起支付的簽名
public function getWechartSign($post){
        $data = array();
        $data['timeStamp'] = $post['timeStamp'];
        $data['nonceStr'] = $post['str'];
        $data['package'] = $post['package'];
        $str = config('config.appId')."\n".$data['timeStamp']."\n".$data['nonceStr']."\n".$data['package']."\n";
        $key = file_get_contents('apiclient_key.pem');
        $str = getSha256WithRSA($str,$key);
        return $str;
    }

重點(diǎn)是支付成功的回調(diào),簡直有毒
返回回來的json信息, json_decode解析就成了空, 復(fù)制出來再解析是可以解析的,說是他有bom信息吧, 弄了也不好使, 用htmlspecialchars_decode轉(zhuǎn)義一下, 調(diào)試工具可以成功, 可是真實(shí)微信支付,還是不行,最后沒辦法, 存的log里面, 自己再取一下,就可以用了

//微信回調(diào)寫入日志文件并返回
    public function writeWechartLog($post){
        if(!is_dir("upload/log")){
           mkdir("upload/log",0777,true);
        }
        $log = fopen("upload/log/wechart.txt", "a+");
        if(is_array($post)){
            $post = json_encode($post);
        }
        fwrite($log, $post."\n");
        fclose($log);
        $read = fopen("upload/log/wechart.txt", "r");
        fseek($read, -1, SEEK_END);
        $s = '';
        while (($c = fgetc($read)) !== false) {
            if ($c == "\n" && $s) break;
            $s = $c . $s;
            fseek($read, -2, SEEK_CUR);
        }
        fclose($read);
        return $s;//取剛剛存的最后一條回調(diào)信息
    }

回調(diào)信息里面,有個(gè)加密的東西,還得解密一下,這個(gè)傳入的是自己又從log里面取出來的數(shù)據(jù)
sodium_crypto_aead_aes256gcm_decrypt 這個(gè)解密密方法需要php擴(kuò)展 sodium

//微信回調(diào)解密
    public function wechartDecrypt($str) {
        $str = htmlspecialchars_decode($str,ENT_COMPAT);
        $post = json_decode($str,true);
        $key = config("config.apiv3Key");//商戶平臺設(shè)置的api v3 密碼
        $text = base64_decode($post['resource']['ciphertext']);
        $str = sodium_crypto_aead_aes256gcm_decrypt($text,$post['resource']['associated_data'],$post['resource']['nonce'],$key);
        return json_decode($str,true);
    }

然后就是取到回調(diào)信息后的業(yè)務(wù)處理了

又看到這個(gè)文章的朋友, 如果知道為什么微信回調(diào)回來的 json信息, 沒辦法直接使用的, 麻煩告告我,謝謝啦, 研究一天沒研究出來, 只能先這樣處理了...

?著作權(quán)歸作者所有,轉(zhuǎn)載或內(nèi)容合作請聯(lián)系作者

PHP 微信小程序 微信支付 v3

PHP 微信小程序微信支付 v3