在MongoDB中将ObjectId转换为字符串

const MongoClient = require('mongodb').MongoClient;
const ObjectID = require('mongodb').ObjectID;

const url = 'mongodb://localhost:27017';
const dbName = 'your_database_name';

MongoClient.connect(url, { useNewUrlParser: true }, (err, client) => {
  if (err) {
    console.error('Failed to connect to the database:', err);
    return;
  }

  const db = client.db(dbName);
  const collection = db.collection('your_collection_name');

  collection.find({}).toArray((err, documents) => {
    if (err) {
      console.error('Failed to retrieve documents:', err);
      return;
    }

    const transformedDocuments = documents.map(doc => {
      doc._id = doc._id.toString();
      return doc;
    });

    console.log('Transformed documents:', transformedDocuments);

    client.close();
  });
});