study_express/8-express/app.js

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

app.use(express.static(path.join(__dirname, 'public')));

app.get('/', function (req, res) {
  res.send('Hello World!');
});
app.post('/from', function (req, res) {
  res.send('提交成功！')
})

app.listen(3000, function () {
  console.log('Example app listening on port 3000!');
});