Javascript 如何在express js中获取Cookie值

我怎样才能得到饼干的价值呢

const cookieParser = require('cookie-parser');
app.use(cookieParser());

app.get('/', (req, res) => {
  res.setHeader('Set-Cookie', 'Cookie=HELLO');
});

例如，我一直在尽可能地制作cookies，以获取其值，它可以通过req.cookies获得

比如说,

/* GET home page. */
router.get('/', function(req, res, next) {
  res.cookie('user', '...'); 
  console.log("req.cookies['user'] => ", req.cookies['user'])
  console.log("req.headers.cookie => ", req.headers.cookie)
  res.render('index', { title: 'Express' });
});

控制台如下图所示：

/* GET home page. */
router.get('/', function(req, res, next) {
  res.cookie('user', '...'); 
  console.log("req.cookies['user'] => ", req.cookies['user'])
  console.log("req.headers.cookie => ", req.headers.cookie)
  res.render('index', { title: 'Express' });
});