基於jwt的用戶登錄認證
阿新 • • 發佈:2018-06-19
_id ati one -c png IV ont node fun
最近在app的開發過程中,做了一個基於token的用戶登錄認證,使用vue+node+mongoDB進行的開發,前來總結一下。
token認證流程:
1:用戶輸入用戶名和密碼,進行登錄操作,發送登錄信息到服務器端。
2:服務器端查詢數據庫驗證用戶名密碼是否正確,正確,通過jsonwebtoken生成token,返回給客戶端;否則返回錯誤信息給客戶端。
3:通過本地存儲存儲獲取的token信息,並且會跳轉到路由指定的頁面。
4:當客戶端需要請求數據時,發送請求,並且在請求的頭文件中添加本地存儲的token信息。
5:服務器端獲取到請求頭文件中的token信息,解析token信息,驗證是否有效,有效,查詢數據庫,返回請求的數據。
客戶端與服務器端關於token的驗證示意圖:
1:用戶登錄的模型骨架文件user.js
‘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:服務器端api請求文件api.js
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‘); // 註冊 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: ‘註冊成功‘}); }); }else{ res.send({success: false, msg: ‘用戶名已經存在‘}); } }); }); // 登錄 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: ‘用戶名不存在‘}) console.log(‘error:‘ + err); return; } console.log(‘result:‘,result) if(result.password === password){ console.log(‘登錄成功‘)
// 調用token生成函數let _token = createToken(username); // 保存token到數據庫中 result.token = _token; result.save((err) => { if(err){ console.log(‘error:‘ + err + ‘token‘) } }) if(result){ res.send({success: true, msg: ‘登錄成功‘, token: _token}); }else{ res.send({success: false, msg: ‘登錄失敗‘}); } }else{ res.send({success: false, msg: ‘密碼錯誤‘}); } }); }); // 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: ‘用戶名不存在‘}) 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: ‘登錄成功‘, token: token}); }else{ res.send({success: false, msg: ‘登錄失敗‘}); } }); }); // 刪除用戶
// 刪除用戶時,驗證token信息是否過期 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:服務器端token生成文件createToken.js
const jwt = require(‘jsonwebtoken‘); module.exports = function(user_id){ const token = jwt.sign({ user_id: user_id }, ‘[email protected]‘, { expiresIn: 60 //過期時間設置為60 }); return token; };
4:服務器端驗證token是否正確文件checkToken.js
const jwt = require(‘jsonwebtoken‘); //檢查token是否過期 module.exports = function(req, res, next) {
// 獲取請求頭文件中的token信息 let token = req.body.token || req.query.token || req.headers[‘authorization‘]; console.log(token) // 解析 token if (token) { // 確認token是否正確 let decoded = jwt.decode(token, ‘[email protected]‘); console.log(decoded,44444)
// 驗證token是否過期 if(token && decoded.exp <= new Date()/1000){ return res.json({ success: false, message: ‘token過期‘ }); }else{ return next(); } } else { // 如果沒有token,則返回錯誤 return res.status(403).send({ success: false, message: ‘沒有提供token!‘ }); } };
5:服務器端啟動文件
const express = require("express");
var bodyParser=require(‘body-parser‘);
const app = express();
const api = require(‘./router/api‘)
// 跨域設置
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");
// 設置請求頭類型 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中用戶登錄操作
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) }); },
基於jwt的用戶登錄認證