npm install cookie-parser

const express = require("express");
const cookieParser = require("cookie-parser");
const app = express();
// 使用 cookie-parser 中間件
app.use(cookieParser());
app.get("/", (req, res) => {
  // 獲取請求中的 Cookie
  const cookies = req.cookies;
  console.log("Cookies:", cookies);
  res.send("Cookie parsed successfully");
});
const port = 3000;
app.listen(port, () => {
  console.log(`Server running on port ${port}`);
});

app.get("/get-cookie", (req, res) => {
  const username = req.cookies.username;
  if (username) {
    res.send(`Hello, ${username}`);
  } else {
    res.send("No username cookie found");
  }
});

app.get("/set-cookie", (req, res) => {
  // 設(shè)置一個(gè)名為 username 的 Cookie，值為 John，有效期為 1 小時(shí)
  res.cookie("username", "John", { maxAge: 3600000, httpOnly: true });
  res.send("Cookie set successfully");
});

const express = require("express");
const cookieParser = require("cookie-parser");
const app = express();
// 使用帶有密鑰的 cookie-parser 中間件
app.use(cookieParser("mysecretkey"));
app.get("/set-signed-cookie", (req, res) => {
  // 設(shè)置一個(gè)簽名的 Cookie
  res.cookie("signedUsername", "Jane", { signed: true });
  res.send("Signed cookie set successfully");
});
app.get("/get-signed-cookie", (req, res) => {
  // 獲取簽名的 Cookie
  const signedUsername = req.signedCookies.signedUsername;
  if (signedUsername) {
    res.send(`Hello, ${signedUsername}`);
  } else {
    res.send("No signed username cookie found");
  }
});
const port = 3000;
app.listen(port, () => {
  console.log(`Server running on port ${port}`);
});

app.get("/clear-cookie", (req, res) => {
  res.clearCookie("username");
  res.send("Cookie cleared successfully");
});