如何在JSON响应中包含来自MongoDB的ObjectID密钥？

const { MongoClient } = require('mongodb');

async function main() {
  const uri = "your_mongodb_connection_string";
  const client = new MongoClient(uri, { useNewUrlParser: true, useUnifiedTopology: true });

  try {
    await client.connect();
    const database = client.db('your_database_name');
    const collection = database.collection('your_collection_name');

    const documents = await collection.find().toArray();
    console.log(documents); // 这里应该包含 _id 字段
  } finally {
    await client.close();
  }
}

main().catch(console.error);

const express = require('express');
const app = express();

app.get('/data', async (req, res) => {
  const uri = "your_mongodb_connection_string";
  const client = new MongoClient(uri, { useNewUrlParser: true, useUnifiedTopology: true });

  try {
    await client.connect();
    const database = client.db('your_database_name');
    const collection = database.collection('your_collection_name');

    const documents = await collection.find().toArray();
    res.json(documents); // 确保这里包含 _id 字段
  } finally {
    await client.close();
  }
});

app.listen(3000, () => {
  console.log('Server is running on port 3000');
});

fetch('/data')
  .then(response => response.json())
  .then(data => {
    console.log(data); // 确保这里包含 _id 字段
  });