Nodejs保存到mongoDB

npm install mongodb

const MongoClient = require('mongodb').MongoClient;
const url = 'mongodb://localhost:27017'; // MongoDB数据库的连接地址
const dbName = 'mydb'; // 数据库名称

MongoClient.connect(url, function(err, client) {
  if (err) throw err;
  console.log('Connected successfully to server');
  const db = client.db(dbName);
  // 在这里执行数据库操作
  client.close();
});

const collection = db.collection('users');
const document = { name: 'John', age: 30 };
collection.insertOne(document, function(err, result) {
  if (err) throw err;
  console.log('Document inserted');
});

const collection = db.collection('users');
collection.find({}).toArray(function(err, docs) {
  if (err) throw err;
  console.log('Found the following documents:');
  console.log(docs);
});

const collection = db.collection('users');
collection.updateOne({ name: 'John' }, { $set: { age: 35 } }, function(err, result) {
  if (err) throw err;
  console.log('Document updated');
});

const collection = db.collection('users');
collection.deleteOne({ name: 'John' }, function(err, result) {
  if (err) throw err;
  console.log('Document deleted');
});