5000/groups/create可以工作，但是5000/groups/:id返回404

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

app.post('/groups/create', (req, res) => {
  // 创建逻辑
});

app.get('/groups/:id', (req, res) => {
  const groupId = req.params.id;
  // 查询逻辑
  // 如果找到资源
  res.status(200).send(group);
  // 如果未找到资源
  res.status(404).send('Group not found');
});

app.listen(5000, () => console.log('Server running on port 5000'));

const Group = require('./models/Group'); // 假设您有一个Group模型

app.get('/groups/:id', async (req, res) => {
  try {
    const group = await Group.findById(req.params.id);
    if (!group) return res.status(404).send('Group not found');
    res.send(group);
  } catch (error) {
    res.status(500).send(error.message);
  }
});

function checkPermission(req, res, next) {
  // 权限检查逻辑
  if (hasPermission(req.user, req.params.id)) {
    next();
  } else {
    res.status(403).send('Permission denied');
  }
}

app.get('/groups/:id', checkPermission, (req, res) => {
  // 查询逻辑
});