如何在Bluemix上使用node js app获取插入到Mongo db集合中的json数据的id

const MongoClient = require('mongodb').MongoClient;
const url = 'mongodb://<mongodb-host>:<mongodb-port>/<database-name>';

MongoClient.connect(url, function(err, client) {
  if (err) {
    console.error('Failed to connect to MongoDB:', err);
    return;
  }

  console.log('Connected to MongoDB successfully');

  const db = client.db('<database-name>');
  const collection = db.collection('<collection-name>');

  // 插入JSON数据到集合中
  const data = { name: 'John', age: 30 };
  collection.insertOne(data, function(err, result) {
    if (err) {
      console.error('Failed to insert data:', err);
      return;
    }

    console.log('Data inserted successfully');
    console.log('Inserted ID:', result.insertedId);

    // 关闭数据库连接
    client.close();
  });
});