不能从登录表单获取数据的简单教程代码(express js)

const express = require('express');
const bodyParser = require('body-parser');

const app = express();
const port = 3000;

// 使用 body-parser 中间件解析请求体
app.use(bodyParser.urlencoded({ extended: false }));

// 处理 GET 请求，显示登录表单
app.get('/login', (req, res) => {
  res.send(`
    <form action="/login" method="POST">
      <input type="text" name="username" placeholder="Username" />
      <input type="password" name="password" placeholder="Password" />
      <button type="submit">Login</button>
    </form>
  `);
});

// 处理 POST 请求，获取并处理登录表单数据
app.post('/login', (req, res) => {
  const { username, password } = req.body;
  console.log('Username:', username);
  console.log('Password:', password);

  // 这里可以添加验证逻辑

  res.send('Login successful!');
});

app.listen(port, () => {
  console.log(`Server running at http://localhost:${port}/`);
});