如何使用express api获取Mongoose中已创建对象的返回值

const express = require('express');
const router = express.Router();

router.get('/objects/:id', (req, res) => {
  // 在这里处理获取对象的请求
});

module.exports = router;

const ObjectModel = require('../models/object');

router.get('/objects/:id', (req, res) => {
  const objectId = req.params.id;

  ObjectModel.findById(objectId, (err, object) => {
    if (err) {
      // 处理错误情况
      res.status(500).json({ error: 'Internal Server Error' });
    } else if (!object) {
      // 处理对象不存在的情况
      res.status(404).json({ error: 'Object not found' });
    } else {
      // 返回对象的值
      res.json(object);
    }
  });
});

const express = require('express');
const app = express();

const objectRouter = require('./routes/object');

app.use('/api', objectRouter);

app.listen(3000, () => {
  console.log('Server is running on port 3000');
});