二、微信扩展app支付

一、开通app支付

1、代码片段

前端代码：

<!doctype html>
<html>

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="maximum-scale=1.0,minimum-scale=1.0,user-scalable=0,width=device-width,initial-scale=1.0" />
    <meta name="format-detection" content="telephone=no,email=no,date=no,address=no">
    <title>底部导航</title>
    <link rel="stylesheet" type="text/css" href="css/weui/weui.min.css" />
    <style>

    </style>
</head>

<body>
    支付
</body>

</html>
<script type="text/javascript" src="script/api.js"></script>
<script type="text/javascript" src="js/jquery-1.11.0.js"></script>
<script type="text/javascript">
    apiready = function() {
        aliPay();
    }

    function aliPay() {
        api.ajax({
            url: 'http://192.168.1.102:59770/api/home/getDemo', //url+模块
            method: 'GET',
            dataType: 'text'
        }, function(ret, err) {
            var wxPay = api.require('wxPay');
            //开发者通过 payOrder 方法来进行支付，自己处理订单信息以及签名过程
            console.log("自己处理订单信息以及签名过程请求:", ret);
            var data = JSON.parse(ret);
            data = data.result;
            console.log("data:", data.noncestr);
            /*
            result = "{"result":{"appid":"wx6f6f4d261ef33980","noncestr":"645209991","package":"Sign=WXPay","partnerid":"1596592261","prepayid":"wx161223511269338d0d11bf3f1703145300","timestamp":"1592281432","sign":"A836BDC48F62D27910417330184FF0A1","mchid":"1596592261","returncode":"SUCCESS","returnmsg":"OK"}}";
                       return result;
            */
            wxPay.payOrder({
                apiKey: data.appid,
                orderId: data.prepayid,
                mchId: data.mchid,
                nonceStr: data.noncestr,
                timeStamp: data.timestamp,
                package: data.package,
                sign: data.sign
            }, function(ret, err) {
                if (ret.status) {
                    //支付成功
                } else {
                    alert(err.code);
                }
            });

        });
    }
</script>
后台代码：略