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qrcode.js
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qrcode.js
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const express = require('express')
const alipayService = require('./alipay')
/*** 请填写以下配置信息 ***/
const APPID = 'xxxxx'; //https://open.alipay.com 账户中心->密钥管理->开放平台密钥，填写添加了当面付的应用的APPID
const NOTIFY_URL = 'http://www.xxx.com:3000/notify'; //付款成功后的异步回调地址
const OUT_TRADE_NO = new Date().getTime(); //你自己的商品订单号
const PAY_AMOUNT = 0.01; //付款金额，单位:元
const ORDER_NAME = '支付测试'; //订单标题
const SIGN_TYPE = 'RSA2'; //签名算法类型，支持RSA2和RSA，推荐使用RSA2
//商户私钥，填写对应签名算法类型的私钥，如何生成密钥参考：https://docs.open.alipay.com/291/105971和https://docs.open.alipay.com/200/105310
const RSA_PRIVATE_KEY = 'xxxxx';
//支付宝公钥，账户中心->密钥管理->开放平台密钥，找到添加了支付功能的应用，根据你的加密类型，查看支付宝公钥
const ALIPAY_PUBLIC_KEY = 'xxxxx'
/*** 配置结束 ***/
let alipay = new alipayService({
appid: APPID,
rsa_private_key: RSA_PRIVATE_KEY,
alipay_public_key: ALIPAY_PUBLIC_KEY,
notify_url: NOTIFY_URL,
method: 'alipay.trade.precreate',
})
let app = express()
app.use(express.urlencoded({extended: true})) //解析post请求
app.get('/', (request, response) => {
response.send(`
<!DOCTYPE html>
<html lang="en">
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta charset="UTF-8">
<title>Node.js 支付宝 当面付demo</title>
<link href="https://cdn.bootcss.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container-fluid">
<h2>当面付demo</h2>
<form action="/pay" method="get">
<table class="table table-bordered">
<tr>
<td>订单金额</td>
<td><input class="form-control" type="number" step="0.01" min="0.01" name="amount" id="amount" value="${PAY_AMOUNT}"></td>
</tr>
<tr>
<td>订单号</td>
<td><input class="form-control" type="text" name="orderid" id="orderid" value="${OUT_TRADE_NO}"></td>
</tr>
<tr>
<td colspan="2"><input class="btn btn-primary" type="submit" value="支付"></td>
</tr>
</table>
</form>
</div>
</body>
</html>
<script >
document.getElementById('orderid').value = new Date().getTime()
</script>
`)
})
//发起支付
app.get('/pay', async (request, response) => {
let query = request.query
//请求参数
let requestParams = {
'out_trade_no': OUT_TRADE_NO,
'total_amount': PAY_AMOUNT, //单位 元
'subject': ORDER_NAME, //订单标题
}
if (Object.prototype.toString.call(query) === '[object Object]' && query.amount)
requestParams.total_amount = parseFloat(query.amount).toFixed(2)
if (Object.prototype.toString.call(query) === '[object Object]' && query.orderid)
requestParams.out_trade_no = query.orderid
let result = await alipay.doPay(requestParams).catch(err => {
response.send(err)
})
if (Object.prototype.toString.call(result) === '[object Object]' && result.qr_code) {
//生成二维码
let qrcodeUrl = `https://sapi.k780.com/?app=qr.get&level=H&size=6&data=${result.qr_code}`;
response.send(`<img src='${qrcodeUrl}' style='width:300px;'><br>二维码内容：${result.qr_code}`)
}
})
//异步回调
app.post('/notify', (request, response) => {
let params = request.body
let result = alipay.rsaCheck(params)
if (result === true) {
console.log('验证签名成功')
//处理你的逻辑，例如获取订单号 params.out_trade_no，订单金额 params.total_amount等
} else {
console.log('验证签名失败')
}
//程序执行完后打印输出“success”
response.send('success')
})
//绑定端口监听
app.listen(3000, (err) => {
if (!err) {
console.log('服务器启动成功')
} else {
console.log(err)
}
})