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关于Nodejs的一些开发记录

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不想写课设。

Express

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npx express-generator
npm install

MongoDB

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# MongoDB
npm install --save mongodb mongoose
# 创建容器
docker run -p 27017:27017 -v ~/Docker/mongodb/data/:/data/db --name mongodb -d mongo
# 进入数据库
docker exec -it mongodb mongo
# 选择数据库
use admin
# 创建用户
db.createUser({user: 'south', pwd: 'south!!!!!', roles: ['root']})
# 校验
db.auth('south','south!!!!!')
# 销毁容器
docker stop mongodb && docker rm mongodb
# 创建容器
docker run -p 27017:27017 -v ~/Docker/mongodb/data/:/data/db --name mongodb -d mongo --auth
# 进入数据库
docker exec -it mongodb mongo admin
# 校验
db.auth('south','south!!!!!')
# 查看数据库
show dbs
# 创建数据库
use takeout_system
# 数据库授权
db.createUser({user: 'sea', pwd: 'sea!!!!!', roles: ['dbOwner']})
# 插入数据
db.user.insert({"south":"south"})

Alipay

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# Alipay
npm install --save alipay-sdk

Api如下，支付宝沙箱环境。

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var express = require('express');
var fs = require('fs');
var formidable = require('formidable');
var AlipaySdk = require('alipay-sdk').default;
var AlipayFormData = require('alipay-sdk/lib/form').default
var router = express.Router();

const alipaySdk = new AlipaySdk({
    appId: '2016102300743038',
    privateKey: fs.readFileSync('./config/private-key.pem', 'ascii'),
    gateway: 'https://openapi.alipaydev.com/gateway.do',
    signType: 'RSA2',
});

async function pay(good) {
    const formData = new AlipayFormData();
    formData.setMethod('get');
    formData.addField('notifyUrl', 'http://127.0.0.1:3000/paycallback');
    formData.addField('returnUrl', 'http://127.0.0.1:3000/success');
    formData.addField('bizContent', {
        outTradeNo: new Date().valueOf(),
        productCode: good.orderID,
        totalAmount: good.totalPrice,
        subject: good.sellerName,
        body: good.orderFoodList,
    });
    const result = await alipaySdk.exec('alipay.trade.page.pay', {}, {
            formData: formData,
            validateSign: true
        },
    );
    return result;
}

router.get('/', function (req, res, next) {
    res.send(`
    <form action="./pay" enctype="multipart/form-data" method="post">
      <input type="text" name="orderID" />
      <input type="text" name="totalPrice" />
      <input type="text" name="sellerName" />
      <input type="text" name="orderFoodList" />
      <input type="submit" value="submit" />
    </form>
  `);
});

router.post('/', function (req, res, next) {
    const form = formidable({multiples: true});
    form.parse(req, function (err, fields, files) {
        if (err) {
            res.send({
                status: 0,
                type: 'FORM_DATA_ERROR',
                message: '表单信息错误'
            })
            return;
        }
        var {orderID, totalPrice, sellerName, orderFoodList} = fields;
        var good = {orderID, totalPrice, sellerName, orderFoodList};
        pay(good).then(result => {
            res.send(result);
        })
        return;
    });
});


router.post('/paycallback', async (ctx, next) => {
    let postData = ctx.request.body;
    console.log("触发付款");
    if (postData.trade_status === "TRADE_SUCCESS") {
        let data = ctx.request.body // 订单信息
        console.log("支付完成！");
    }
})

router.get('/success', async (ctx, next) => {
    ctx.body = "支付成功"
})

module.exports = router;