nodejs 支付宝app支付

【链接】单笔转账到支付宝账户产品介绍更新时间：
https://docs.open.alipay.com/309

const crypto = require('crypto')

const moment = require('moment')

1.返回给移动端签名字符串：

router.post('createAliPayment', async (ctx, next) => {
const orderInfo = await model.order.findOne({
'orderStatus.status': {
$in: [1, 9]
},
orderCode: ctx.params.orderCode,
createdBy: ctx.user.userid,
isDelete: false
}, {
_id: 0,
orderCode: 1,
transCode: 1,
orderProducts: 1,
CNYCharge: 1
})
if (!orderInfo) {
throw {
status: 20001,
message: 'paying orderInfo not exists'
}
return
}
let aliPaySignObj = {
app_id: '支付宝商户Id',
method: 'alipay.trade.app.pay',
charset: 'utf-8',
sign_type: 'RSA2',
timestamp: moment().format('YYYY-MM-DD HH:mm:ss'),
version: '1.0',
notify_url: `${config.notify_ulr}`,
biz_content: JSON.stringify({
body: '冰糖葫芦',
subject: '冰糖葫芦',
out_trade_no: orderInfo.orderCode,
timeout_express: '15m',
total_amount: Number(orderInfo.CNYCharge).toString(),
product_code: 'QUICK_MSECURITY_PAY'
})
};
let signStr = '',
encodeStr = '';
for (let n of Object.keys(aliPaySignObj).sort()) {
signStr += (n + '=' + aliPaySignObj[n] + '&');
encodeStr += (n + '=' + encodeURIComponent(aliPaySignObj[n]) + '&');
}
signStr = signStr.substring(0, signStr.length - 1);
var signer = crypto.createSign('RSA-SHA256').update(signStr);
let privateKey = fse.readFileSync(path.join(__dirname, '../alipay_private_key.pem')).toString();
let sign = signer.sign(privateKey, 'base64')
ctx.body = {
encodeStr: encodeStr + 'sign=' + encodeURIComponent(sign)
}
})

2.支付宝回调

router.post('notifyFromAliPay', async (ctx, next) => {
const resData = ctx.params;
if (!(resData && resData.trade_status && resData.trade_status == 'TRADE_SUCCESS')) {
ctx.body = 'fail';
return;
}
//1.验证签名信息
let signStr = '';
for (let n of Object.keys(resData).sort()) {
if (n !== 'sign' && n !== 'sign_type') {
signStr += (n + '=' + decodeURIComponent(resData[n]) + '&');
}
}
signStr = signStr.substring(0, signStr.length - 1);
let signer = crypto.createVerify('RSA-SHA256').update(signStr);
const aliPublicKey = fse.readFileSync(path.join(__dirname, "../alipay_public_key.pem")).toString();
const sign = signer.verify(aliPublicKey, resData.sign, 'base64');
if (!sign) {
ctx.body = 'fail';
return;
}
const orderCodePhoto = resData.out_trade_no;
const orderDb = await model.order.findOne({
orderCode: orderCodePhoto
}, {
_id: 0,
siteId: 1,
CNYCharge: 1,
usePPCodes: 1,
orderProducts: 1,
virtualProducts: 1,
createdBy: 1,
charge: 1
})
if (!orderDb) {
throw new Error('alipay notify orderCode not exists !')
}
let queryAlipayParams = {
app_id: '支付宝商户Id',
method: 'alipay.trade.query',
charset: 'utf-8',
sign_type: 'RSA2',
timestamp: moment().format('YYYY-MM-DD HH:mm:ss'),
version: '1.0',
biz_content: JSON.stringify({
out_trade_no: orderCodePhoto,
trade_no: resData.trade_no
})
}
let signString = '',
encodeStr = '';
for (let n of Object.keys(queryAlipayParams).sort()) {
signString += (n + '=' + queryAlipayParams[n] + '&');
encodeStr += (n + '=' + encodeURIComponent(queryAlipayParams[n]) + '&');
}
signString = signString.substring(0, signString.length - 1);
var signQuery = crypto.createSign('RSA-SHA256').update(signString);
let privateKey = fse.readFileSync(path.join(__dirname, '../alipay_private_key.pem')).toString();
let signrs = encodeURIComponent(signQuery.sign(privateKey, 'base64'));
const querParams = encodeStr + `sign=${signrs}`;
const queryAlipayResult = await request.getAsync({
url: 'https://openapi.alipay.com/gateway.do?' + querParams
})
const aplipayQueryResult = queryAlipayResult && JSON.parse(queryAlipayResult.body) || '';
if (!aplipayQueryResult) {
ctx.body = 'fail';
return;
}
const aplipayqr = aplipayQueryResult.alipay_trade_query_response;
if (!(aplipayqr.code == '10000' && aplipayqr.msg == 'Success' && aplipayqr.trade_status == 'TRADE_SUCCESS' && Number(aplipayqr.total_amount) == orderDb.CNYCharge)) {
ctx.body = 'fail';
return;
}
try {
ctx.body = 'success';
//更新业务操作
} catch (err) {
throw new Error(err)
}
}

总结：1.nodejs app支付，后端做的就是以上两步，剩下的就是app端的事了。

         2.以上代码，复制，稍微改改就成了