在NodeJs/Express中定义根和错误路由

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

app.get('/', (req, res) => {
  res.send('Hello, World!');
});

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

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

app.get('/', (req, res) => {
  throw new Error('Something went wrong');
});

app.use((err, req, res, next) => {
  console.error(err);
  res.status(500).send('Internal Server Error');
});

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