如何在MongoDB中处理可变参数过滤

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

async function filterDocuments(...params) {
  const url = 'mongodb://localhost:27017';
  const dbName = 'mydb';
  const collectionName = 'mycollection';

  try {
    const client = await MongoClient.connect(url);
    const db = client.db(dbName);
    const collection = db.collection(collectionName);

    // 构建查询条件
    const filter = {};
    params.forEach(param => {
      const [field, value] = param.split(':');
      filter[field] = value;
    });

    // 执行查询
    const result = await collection.find(filter).toArray();

    console.log(result);
  } catch (err) {
    console.error(err);
  } finally {
    client.close();
  }
}

// 示例调用
filterDocuments('name:John', 'age:30', 'city:New York');