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