Node.js 中 cookie-parser 依赖安装使用详解

npm install cookie-parser

const express = require("express");
const cookieParser = require("cookie-parser");
const app = express();
// 使用 cookie-parser 中间件
app.use(cookieParser());
app.get("/", (req, res) => {
  // 获取请求中的 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) => {
  // 设置一个名为 username 的 Cookie，值为 John，有效期为 1 小时
  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();
// 使用带有密钥的 cookie-parser 中间件
app.use(cookieParser("mysecretkey"));
app.get("/set-signed-cookie", (req, res) => {
  // 设置一个签名的 Cookie
  res.cookie("signedUsername", "Jane", { signed: true });
  res.send("Signed cookie set successfully");
});
app.get("/get-signed-cookie", (req, res) => {
  // 获取签名的 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");
});