如何使用mongoose和Node.js请求新创建的模型？

const mongoose = require('mongoose');

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

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

app.post('/users', (req, res) => {
  const { name, age, email } = req.body;
  
  const newUser = new User({ name, age, email });
  
  newUser.save()
    .then(() => {
      // 新用户保存成功的处理逻辑
      res.status(201).json({ message: 'User created successfully' });
    })
    .catch((err) => {
      // 保存失败的处理逻辑
      res.status(500).json({ message: 'Failed to create user' });
    });
});

app.get('/users', (req, res) => {
  User.find()
    .then((users) => {
      // 处理查询到的用户数据
      res.json(users);
    })
    .catch((err) => {
      // 错误处理逻辑
      res.status(500).json({ message: 'Failed to retrieve users' });
    });
});