Node.js+Express+MongoDB+Vue.js代码

const { MongoClient } = require('mongodb');
const url = 'mongodb://127.0.0.1:27017';
const dbName = 'mydb';

async function main() {
    const client = new MongoClient(url);
    try {
        await client.connect();
        console.log('成功连接到数据库');
        const db = client.db(dbName);
        await selecttable(db);
    } catch (err) {
        console.error('error end:', err.stack);
    } finally {
        await client.close();
    }
}

async function selecttable(db) {
    const jszg = db.collection('mydb-conn');
    const docs = await jszg.find({}).toArray();
    console.log("查询所有文档，结果如下：");
    console.log(docs);
}

main();