MongoNotConnectedError：必须连接 MongoClient 才能执行此操作。如何处理这个错误？

Question

指令

我该如何解决这个问题。只是显示 MongoClient 必须连接才能执行此操作

    at getTopology ..... at collection.insertOne .... at maybePromise..

const express = require('express');
const {MongoClient} = require('mongodb');
const password = 'NLJXkuGFhUd68@9';



const uri = "mongodb+srv://organicUser:NLJXkuGFhUd68@9@cluster0.px7rc.mongodb.net/organicdb?retryWrites=true&w=majority";
const client = new MongoClient(uri, { useNewUrlParser: true, useUnifiedTopology: true });

const app = express();

app.get('/', (req, res) => {
    res.send("Hello, I am Working");
})



client.connect(err => {
  const collection = client.db("organicdb").collection("products");

  // perform actions on the collection object
  const product = {name: "Modhu", price: 120, quantity: 30};
  collection.insertOne(product)
  .then(result => {
      console.log("One product added");
  })
  console.log("database connected");

});


app.listen(8000)

Answer 1

只需注释代码或删除 client.close()

 finally {
           // await client.close();
        }

Answer 2

我需要@用%40数据库密码替换