如何将表单中的数据添加到MongoDB集合？

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

const app = express();
const port = 3000;

// 连接到MongoDB数据库
const uri = 'mongodb://localhost:27017';
const client = new MongoClient(uri);

app.use(express.urlencoded({ extended: true }));

app.post('/submit-form', async (req, res) => {
  try {
    await client.connect(); // 连接到数据库

    const formData = req.body; // 获取表单数据

    const database = client.db('mydb');
    const collection = database.collection('mycollection');

    // 创建文档对象
    const document = {
      name: formData.name,
      email: formData.email,
      message: formData.message
    };

    // 插入文档到集合中
    const result = await collection.insertOne(document);

    console.log(`Inserted ${result.insertedCount} document(s)`);

    res.send('Form data added to MongoDB collection');
  } catch (error) {
    console.error('Error inserting form data:', error);
    res.status(500).send('Error inserting form data');
  } finally {
    await client.close(); // 关闭数据库连接
  }
});

app.listen(port, () => {
  console.log(`Server listening at http://localhost:${port}`);
});