开发了一个微信群付费进群功能

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准备

本案例使用的支付接口是 PayJs 微信支付商户,没有商户号可以自己申请:https://payjs.cn/ref/DNXBJD

演示

1 分钱体验

流程

1、写出进群界面
2、对接 PayJs 的 JSAPI 支付接口
3、支付成功后跳转进群二维码

代码

jiaqun-login.php
这个代码主要是授权登录,获取用户的 openid

<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=0,viewport-fit=cover">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <meta name="format-detection" content="telephone=no">
    <link rel="stylesheet" href="https://weui.io/weui.css"/>
    <link rel="stylesheet" href="https://weui.io/example.css"/>
    <title> 正在登录 </title>
</head>
<body>

</body>
</html>
<?php
header("Content-type:text/html;charset=utf8");
// 发送请求
$url = 'https://payjs.cn/api/openid?callback_url= 你的域名 / 你的支付目录 /jiaqun-getopenid.php';
function post($url) {$ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
        $rst = curl_exec($ch);
        curl_close($ch);
        return $rst;
}

// 发送
$result = post($url);
// 返回接口的数据
echo "<p style=\"display:none;\">".$result."</p>";

?>

jiaqun-getopenid.php
这个主要是把获取到的 openid 传到支付订单页面

<?php
header("Content-type:text/html;charset=utf8");
$openid = $_GET["openid"];

// 浏览器跳转
echo "<script>location.href=\" 你的域名 / 你的支付目录 /jiaqun-pay.php?openid=$openid\";</script>";
?>
<title> 请稍候 </title>

jiaqun-pay.php
这个主要是构建订单发起请求参数,创建支付订单

<?php
// 引入配置文件
require_once("config.php");

// 获得 OPENID
$openid = $_GET["openid"];

// 定义金额
$total_fee = 1;

$length = strlen($total_fee);
if ($length == 1) {$money = "0.0".$total_fee;}else if ($length == 2) {$money = "0.".substr($total_fee, 0,1).substr($total_fee, 1,1);
}else if ($length == 3) {$money = substr($total_fee, 0,1).".".substr($total_fee, 1,1).substr($total_fee, 2,3);
}else if ($length == 4) {$money = substr($total_fee, 0,1).substr($total_fee, 1,1).".".substr($total_fee, 2,3).substr($total_fee, 4,4);
}else if ($length == 5) {$money = substr($total_fee, 0,1).substr($total_fee, 1,1).substr($total_fee, 2,1).".".substr($total_fee, 3,2);
}

// 构造订单参数
$data = [
    'mchid'        => $mchid,
    'body'         => '付费进群',
    'total_fee'    => $total_fee,
    'openid'       => $openid,
    'out_trade_no' => 'likeyunkeji.' . time(),];

// 添加数据签名
$data['sign'] = sign($data, $key);

// 发送请求
$url = 'https://payjs.cn/api/jsapi?' . http_build_query($data);
function post($data, $url) {$ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
        $rst = curl_exec($ch);
        curl_close($ch);
        return $rst;
}

// 发送
$result = post($data, $url);
// 返回接口的数据
$results = json_decode($result);

// 返回字符串
$appId = $results->jsapi->appId;
$timeStamp = $results->jsapi->timeStamp;
$nonceStr = $results->jsapi->nonceStr;
$package = $results->jsapi->package;
$signType = $results->jsapi->signType;
$paySign = $results->jsapi->paySign;

// 获取签名
function sign($data, $key)
{array_filter($data);
    ksort($data);
    return strtoupper(md5(urldecode(http_build_query($data) . '&key=' . $key)));
}
?>
<html>
<head>
    <title> 群聊邀请 </title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <meta name="format-detection" content="telephone=no">
    <meta name="format-detection" content="email=no">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <link href="https://cdn.bootcss.com/weui/1.1.2/style/weui.min.css" rel="stylesheet">
    <script src="https://cdn.bootcss.com/zepto/1.2.0/zepto.min.js"></script>
    <link rel="stylesheet" type="text/css" href="css/style.css">
</head>
<body>
    <!-- 顶部区域 -->
    <div id="logo_con">
        <div class="logoimg"><img src="css/qunlogo.png"/></div>
        <p class="qunname"> 里客云科技 </p>
        <p class="qunrenshu">100 人 </p>
    </div>

    <!-- 空白部分 -->
    <p id="yqjrql">TANKING 邀请你加入群聊 </p>

    <!-- 支付按钮 -->
    <a href="javascript:;" id="jrql"> 加入群聊 </a>

    <!-- 进群说明 -->
    <p id="jqsm">1. 该群聊人数较多,为减少新消息给你带来的打扰,建议谨慎加入。<p id="jqsm">2. 你需要实名验证后才能接受邀请,可绑定银行卡进行验证。</p>
</body>

<script>
    if (typeof WeixinJSBridge == "undefined") {if (document.addEventListener) {document.addEventListener('WeixinJSBridgeReady', onBridgeReady, false);
        } else if (document.attachEvent) {document.attachEvent('WeixinJSBridgeReady', onBridgeReady);
            document.attachEvent('onWeixinJSBridgeReady', onBridgeReady);
        }
    }

    function onBridgeReady() {WeixinJSBridge.call('hideOptionMenu');
    }

    $('#jrql').on('click', function () {
        WeixinJSBridge.invoke(
            // 构造发起支付参数,请在接口服务端生成
                'getBrandWCPayRequest', {
                    "appId": "<?php echo $appId ?>",
                    "timeStamp": "<?php echo $timeStamp ?>",
                    "nonceStr": "<?php echo $nonceStr ?>",
                    "package": "<?php echo $package ?>",
                    "signType": "<?php echo $signType ?>",
                    "paySign": "<?php echo $paySign ?>"
                },
                function (res) {if (res.err_msg == "get_brand_wcpay_request:ok") {
                        // 支付成功后跳转页面
                        location.href="https://www.liketube.cn/payjs/css/wxqunqrcode.jpg";
                    }
                }
        );
    });
</script>
</html>

config.php
支付接口的一些参数

<?php
$mchid = 'xxx'; // PAYJS 商户号
$key   = 'xxx'; // 通信密钥
?>

style.css
样式文件

*{
    margin:0;
    padding: 0;
    font-family: -apple-system-font,BlinkMacSystemFont,"Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei UI","Microsoft YaHei",Arial,sans-serif
}

body{background: #f4f4f6;}

#logo_con{
    width: 100%;
    height: 190px;
    background: #fff;
    border-bottom: 1px solid #e4e2e2;
    overflow: hidden;
}

#logo_con .logoimg{
    width: 65px;
    height: 65px;
    margin:35px auto 15px;
    border-radius: 3px;
    border:2px solid #e0e0e0;
    box-sizing: border-box;
}


#logo_con .logoimg img{
    width: 61px;
    height: 61px;
}

#logo_con .qunname{
    text-align: center;
    font-size: 18px;
    color: #3a3a3a;
    margin-top: 5px;
}


#logo_con .qunrenshu{
    text-align: center;
    font-size: 16px;
    color: #8d8d8d;
    margin-top: 5px;
}

#yqjrql{
    text-align: center;
    margin-top: 38px;
    color: #4e4d52;
    font-size: 19px;
}

#jrql{
    display: block;
    width: 200px;
    height: 43px;
    color: #fff;
    background: #44b549;
    border-radius: 3px;
    margin:30px auto 45px;
    text-decoration: none;
    line-height: 43px;
    text-align: center;
    font-size: 18px;
    -webkit-tap-highlight-color:rgba(255,0,0,0);
}

#jqsm{
    width: 89%;
    color: #b1b1b3;
    font-size: 16px;
    margin:8px auto 0px;
}

我这里是没有做订单查询的,真正的项目是要做异步订单查询才可以。

以上代码直接可以用了,修改商户号就行了。

商户号需要你开通 PayJs 才可以获取到。开通链接:https://payjs.cn/ref/DNXBJD

作者:TANKING
网站:https://www.likeyunba.com
微信:face6009
时间:2019-6-29

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