直接开始示例代码

const mongoose = require('mongoose')
const Schema = mongoose.Schema

const UserSchema = new Schema({
  name: String,
  password: String
})

const Models = {
  User: mongoose.model('User', UserSchema)
}

mongoose.connect('mongodb://127.0.0.1/database', { useMongoClient: true }) // 加上后面的{ useMongoClient: true }可以去除警告

const db = mongoose.connection

db.on('error',console.error.bind(console,'Database connection error.'));
db.once('open', () => {
    console.log('The database has connected.')
});

module.exports = Models