如何使用mongoose和node.js在多个mongodb集合中插入数据

const mongoose = require('mongoose');

mongoose.connect('mongodb://localhost/your_database_name', { useNewUrlParser: true, useUnifiedTopology: true })
  .then(() => {
    console.log('Connected to MongoDB');
  })
  .catch((error) => {
    console.error('Failed to connect to MongoDB', error);
  });

const userSchema = new mongoose.Schema({
  name: String,
  age: Number,
  email: String
});

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

const newUser = new User({
  name: 'John',
  age: 25,
  email: 'john@example.com'
});

newUser.save()
  .then(() => {
    console.log('Data inserted successfully');
    mongoose.disconnect(); // 断开与数据库的连接
  })
  .catch((error) => {
    console.error('Failed to insert data', error);
    mongoose.disconnect(); // 断开与数据库的连接
  });