腾讯云mongoose连接

const mongoose = require('mongoose');

// 连接到MongoDB数据库实例
mongoose.connect('mongodb://username:password@host:port/database', {
  useNewUrlParser: true,
  useUnifiedTopology: true,
});

// 定义一个模型
const Schema = mongoose.Schema;
const UserSchema = new Schema({
  name: String,
  age: Number,
});

const User = mongoose.model('User', UserSchema);

// 创建一个新的用户对象并保存到数据库
const user = new User({
  name: 'John Doe',
  age: 30,
});

user.save((err) => {
  if (err) {
    console.error(err);
  } else {
    console.log('User saved successfully');
  }
});