无法将数据从HTTP post请求传递到javascript(expressjs)控制器

<form action="/controller" method="post">
  <input type="text" name="data" />
  <input type="submit" value="Submit" />
</form>

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

app.post('/controller', (req, res) => {
  const data = req.body.data;
  // 处理接收到的数据
  // ...
  res.send('Data received');
});

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

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

app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());

// 路由和控制器代码
// ...

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