使用nodejs在mongodb中持续存储get和存储数据

const MongoClient = require('mongodb').MongoClient;
const url = 'mongodb://localhost:27017'; // MongoDB连接URL

MongoClient.connect(url, function(err, client) {
  if (err) {
    console.error('Failed to connect to MongoDB:', err);
    return;
  }
  console.log('Connected to MongoDB successfully!');
  
  // 在这里执行后续操作
});

const db = client.db('mydatabase'); // 选择数据库

const collection = db.collection('mycollection'); // 选择集合

collection.find({}).toArray(function(err, docs) {
  if (err) {
    console.error('Failed to fetch data from MongoDB:', err);
    return;
  }
  console.log('Fetched data:', docs);
});

const data = { name: 'John', age: 30 };

collection.insertOne(data, function(err, result) {
  if (err) {
    console.error('Failed to insert data into MongoDB:', err);
    return;
  }
  console.log('Data inserted successfully:', result.insertedId);
});

client.close();