先上npm地址
jsonwebtoken：jsonwebtoken - npm
express-jwt：express-jwt - npmps
const express = require('express');
const jwt = require('jsonwebtoken');
const { expressjwt: expressJWT} = require('express-jwt')const app = express();// 设置密钥
const secretKey = 'my_secret_key';// 生成Token
const token = jwt.sign({ username: 'user123' }, secretKey, { expiresIn: '1h' });// 验证Token1（在req.auth里获取解析值）
app.use(expressJWT({ secret: config.jwtSecretKey, algorithms:["HS256"],credentialsRequired: false,getToken: function fromHeaderOrQuerystring(req) {if ( req.headers.authorization && req.headers.authorization.split(" ")[0] === "Bearer" ) {return req.headers.authorization.split(" ")[1];} else if (req.query && req.query.token) {return req.query.token;}return null;}
}).unless({ path: ['/api/reguser','/api/login'] }))//验证Token2
//（这里获取到的token值一定要是jwt生成的token，不能添加其他东西，否则会报incalid Token）
const router = express.Router()
function verifyToken(req, res, next) {const token = req.headers.authorization;if (!token) {return res.status(403).json({ code: -1, message: '请登录后再进行操作' });}jwt.verify(token, config.jwtSecretKey, (err, decoded) => {if (err) {return res.status(500).json({ code: -1, message: 'token验证失败'+err });}req.user = decoded;next();});
}
router.get('/userinfo',verifyToken, (req, res) => {res.send(`Welcome ${req.user.username}!`);
});)// 启动服务器
app.listen(3000, () => {console.log('Server started on port 3000');
});
)