Mongoose在NodeJS中总是返回一个空数组

// 错误的查询条件
const result = await Model.find({ name: '' }); // 这里应该是一个具体的名字

// 确保数据库连接正常
mongoose.connect('mongodb://localhost:27017/test', { useNewUrlParser: true, useUnifiedTopology: true })
  .then(() => console.log('Connected to MongoDB...'))
  .catch(err => console.error('Could not connect to MongoDB...', err));

// 确保模型定义正确
const modelSchema = new mongoose.Schema({
  name: String,
  age: Number
});

const Model = mongoose.model('Model', modelSchema);

// 为查询字段创建索引
Model.collection.createIndex({ name: 1 });

const mongoose = require('mongoose');

// 连接到 MongoDB
mongoose.connect('mongodb://localhost:27017/test', { useNewUrlParser: true, useUnifiedTopology: true })
  .then(() => console.log('Connected to MongoDB...'))
  .catch(err => console.error('Could not connect to MongoDB...', err));

// 定义模型
const modelSchema = new mongoose.Schema({
  name: String,
  age: Number
});

const Model = mongoose.model('Model', modelSchema);

// 创建索引
Model.collection.createIndex({ name: 1 });

// 正确的查询条件
const result = await Model.find({ name: 'John' }).exec();

console.log(result);