node，cookie完成自动登录
注意点：
1 种一个cookie,res.cookie("cookie名","cookie内容",{path:路径,signed:是否加密，maxAge:超时时间})
2 cookie加密，req.secret规定一个加密规则，然后res.cookie("cookie名","cookie内容",{path:路径,signed:true，maxAge:超时时间})
3 获取cookie,利用cookie-parser,先声明server.use(cookieParser());获取，req.cookies;
4 cookie解密：server.use(cookieParser("asdfghjklpoiuytrewqasdgh1234567"));在使用cookieparser中间件的时候，告诉cookieparse你的加密规则,然后使用req.signedCookies
步骤：
1 安装express express-static cookie-parser
2 引入express express-static cookie-parser，创建一个sever并监听端口
代码：
html:
<body>
<div class="box">
<p><span>用户名:</span><input type="text" id="user"></p>
<p><span>密码:</span><input type="text" id="pass"></p>
<p>
<input type="checkbox" id="remberPassword">记住密码
</p>
<p><input type="button" id="login" value="登录"><input type="button" id="register" value="注册"></p>
</div>
</body>css:
<style>
.box {
position: absolute;
left: 0;
right: 0;
top: -800px;
bottom: 0;
margin: auto;
transition: all ease 1s;
width: 400px;
height: 400px;
border: 1px solid rgba(0, 0, 0, .5);
box-shadow: 1px 1px 6px 2px rgba(0, 0, 0, .5);
}
</style>js：
$(document).ready(() => {
setTimeout(() => {
$(".box").css("top", "0");
}, 15)
// cookie自动登录
setTimeout(() => {
ajax({
url: "http://localhost:8020/auto",
type: "get",
success: (res) => {
alert(res);
}
})
}, 2000)
// 注册
$("#register").on("click", () => {
ajax({
url: "http://localhost:8020/register",
type: "get",
data: {
"userName": user.value,
"password": pass.value
},
success: (res) => {
alert(res);
}
})
})
// 登录
$("#login").on("click", () => {
console.log(remberPassword.checked);
ajax({
url: "http://localhost:8020/login",
type: "get",
data: {
"userName": user.value,
"password": pass.value,
"isCookie": remberPassword.checked
},
success: (res) => {
alert(res);
}
})
})
})nodejs
var express = require("express");
var cookieParser = require("cookie-parser");
var static = require("express-static");
var fs = require("fs");
var server = express();
server.listen(8020);
server.use(cookieParser("asdfghjklpoiuytrewqasdgh1234567"));
// //注册
server.use("/register", (req, res) => {
let userMessage = req.query;
fs.readFile("../user.txt", "utf8", (err, data) => {
if (err) console.log(err);
let user;
if (data) {
user = JSON.parse(data);
} else {
user = {};
}
if (user[userMessage.userName]) {
res.send("用户已存在");
return;
} else {
user[userMessage.userName] = userMessage.password;
fs.writeFile("../user.txt", JSON.stringify(user), (err, data) => {
if (err) {
console.log(err);
}
res.send("注册成功");
});
}
});
});
/*
1 种一个cookie,res.cookie("cookie名","cookie内容",{path:路径,signed:是否加密，maxAge:超时时间})
2 cookie加密，req.secret规定一个加密规则，然后res.cookie("cookie名","cookie内容",{path:路径,signed:true，maxAge:超时时间})
3 获取cookie,利用cookie-parser,先声明server.use(cookieParser());获取，req.cookies;
4 cookie解密：server.use(cookieParser("asdfghjklpoiuytrewqasdgh1234567"));在使用cookieparser中间件的时候，告诉cookieparse你的加密规则,然后使用req.signedCookies
*/
//登录
server.use("/login", (req, res) => {
let userMessage = req.query;
req.secret = "asdfghjklpoiuytrewqasdgh1234567";
fs.readFile("../user.txt", "utf-8", (err, data) => {
if (err) console.log(err);
let userData = JSON.parse(data);
if (userData[userMessage.userName] == userMessage.password) {
if (userMessage.isCookie) {
res.cookie("user1", userMessage.userName + "-" + userMessage.password, {
signed: true,
maxAge: 60 * 1000,
});
}
res.send("登录成功");
} else {
res.send("登录失败");
}
});
});
//自动登录
server.use("/auto", (req, res) => {
let cookies = req.signedCookies;
console.log(cookies);
if (cookies.user1) {
let userMessage = {};
userMessage.userName = cookies["user1"].split("-")[0];
userMessage.password = cookies["user1"].split("-")[1];
req.secret = "asdfghjklpoiuytrewqasdgh1234567";
fs.readFile("../user.txt", "utf-8", (err, data) => {
if (err) console.log(err);
let userData = JSON.parse(data);
if (userData[userMessage.userName] == userMessage.password) {
res.send("登录成功");
}
});
} else {
res.send("登录超时,请重新登录");
}
});
server.use(static("./../"));
效果：
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