基于jwt的用户登陆认证
最近在app的开发过程当中，作了一个基于token的用户登陆认证，使用vue+node+mongoDB进行的开发，前来总结一下。javascript
token认证流程：vue
1：用户输入用户名和密码，进行登陆操做，发送登陆信息到服务器端。java
2：服务器端查询数据库验证用户名密码是否正确，正确，经过jsonwebtoken生成token，返回给客户端；不然返回错误信息给客户端。node
3：经过本地存储存储获取的token信息，而且会跳转到路由指定的页面。ios
4：当客户端须要请求数据时，发送请求，而且在请求的头文件中添加本地存储的token信息。web
5：服务器端获取到请求头文件中的token信息，解析token信息，验证是否有效，有效，查询数据库，返回请求的数据。数据库
客户端与服务器端关于token的验证示意图：express
1：用户登陆的模型骨架文件user.jsjson
'use strict';
let mongoose = require('mongoose'),
Schema = mongoose.Schema;
let userSchema = new Schema({
"username": String,
"password": String,
"token": String,
"create_time": Date
});
let users = mongoose.model('users', userSchema);
module.exports = users;
2：服务器端api请求文件api.jsaxios
const express = require('express');
const router = express();
const db=require('../db/db.js');
const User=require('../db/user.js');
const Login=require('../db/login.js');
const Fan=require('../db/fan.js');
const Power=require('../db/power.js');
const createToken = require('../token/createToken');
const checkToken = require('../token/checkToken');
// 注册
router.post('/add', function(req, res, next){
let username = req.body.username,
password = req.body.password;
let newUser = new User({
username: req.body.username,
password: req.body.password
});
User.findOne({"username":username},(err, result) => {
if(err){
console.log('error:' + err);
return;
}
console.log('result:',result);
if(!result){
newUser.save(function(err, result){
if(err){
console.log('error:' + err);
return;
}
res.send({success: true, msg: '注册成功'});
});
}else{
res.send({success: false, msg: '用户名已经存在'});
}
});
});
// 登陆
router.post('/login', function(req, res, next){
let username = req.body.username,
password = req.body.password;
User.findOne({"username":username},(err, result) => {
if(err){
res.send({success: false, msg: '用户名不存在'})
console.log('error:' + err);
return;
}
console.log('result:',result)
if(result.password === password){
console.log('登陆成功')
// 调用token生成函数
let _token = createToken(username);
// 保存token到数据库中
result.token = _token;
result.save((err) => {
if(err){
console.log('error:' + err + 'token')
}
})
if(result){
res.send({success: true, msg: '登陆成功', token: _token});
}else{
res.send({success: false, msg: '登陆失败'});
}
}else{
res.send({success: false, msg: '密码错误'});
}
});
});
// token
router.post('/createtoken', function(req, res, next){
let username = req.body.username;
User.findOne({"username":username},(err, result) => {
if(err){
res.send({success: false, msg: '用户名不存在'})
console.log('error:' + err);
return;
}
console.log('result:',result)
let token = createToken(username);
result.token = token;
result.save((err) => {
if(err){
console.log('error:' + err + 'token')
}
})
if(result){
res.send({success: true, msg: '登陆成功', token: token});
}else{
res.send({success: false, msg: '登陆失败'});
}
});
});
// 删除用户
// 删除用户时，验证token信息是否过时
router.get('/delete', checkToken, function(req, res, next){
let _username = req.body.username;
User.remove({username: _username}, (err, result) => {
if(err){
console.log('error:' + err);
return;
}
res.send(result);
});
});
module.exports = router;
3：服务器端token生成文件createToken.js
const jwt = require('jsonwebtoken');
module.exports = function(user_id){
const token = jwt.sign({
user_id: user_id
}, '1025886304@qq.com', {
expiresIn: 60 //过时时间设置为60
});
return token;
};
4：服务器端验证token是否正确文件checkToken.js
const jwt = require('jsonwebtoken');
//检查token是否过时
module.exports = function(req, res, next) {
// 获取请求头文件中的token信息
let token = req.body.token || req.query.token || req.headers['authorization'];
console.log(token)
// 解析 token
if (token) {
// 确认token是否正确
let decoded = jwt.decode(token, '1025886304@qq.com');
console.log(decoded,44444)
// 验证token是否过时
if(token && decoded.exp <= new Date()/1000){
return res.json({ success: false, message: 'token过时' });
}else{
return next();
}
} else {
// 若是没有token，则返回错误
return res.status(403).send({
success: false,
message: '没有提供token！'
});
}
};
5：服务器端启动文件
const express = require("express");
var bodyParser=require('body-parser');
const app = express();
const api = require('./router/api')
// 跨域设置
app.all("*", function(req, res, next) {
res.header("Access-Control-Allow-Credentials", true);
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Methods", "PUT,POST,GET,DELETE,OPTIONS");
res.header("Content-Type", "application/json;charset=utf-8");
// 设置请求头类型 添加token res.header('Access-Control-Allow-Headers', 'Content-Type, Content-Length, Authorization, Accept, X-Requested-With , yourHeaderFeild');
next();
});
app.use(bodyParser.urlencoded({extended:true}));
app.use("/api", api);
app.get('/', (req, res) => {
res.send('Hello World');
});
const port = process.env.PORT || 3001;
app.listen(port, () => {
console.log('Express server listening on port ' + port);
});
module.exports = app;
6：vue中用户登陆操做
login () {
let params = new URLSearchParams();
params.append('username', this.login_username);
params.append('password', this.login_password);
let _token = localStorage.getItem('token');
let that = this;
console.log(_token)
axios.post('http://localhost:3001/api/login', params, {headers:{'Content-Type':'application/x-www-form-urlencoded','Authorization': _token}})
.then(function(res){
console.log(res)
if(res.data.success){
let token = res.data.token;
localStorage.setItem('token', token);
that.$router.push({
path: '/index'
})
}
})
.catch(function(err){
console.log(err)
});
},