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jwt-learn's Introduction

##1 npm i koa-jwt --save

module.export = { SECRET: 'mima!123@10.+gds_' } // 密钥

app.use(koaJwt({
	secret: SECRET
}).unless({
	// 哪些目录忽略jwt验证
	path: [
		/^/,
		/^\/users\/login/,
	]
}))

##2 加密token npm i jsonwebtoken --save const jwt = require('jsonwebtoken')

router.post('/login', function (ctx, next) {
	const { userName, passWord } = ctx.request.body
	const userInfo = {
		userName,
		passWord,
	}
	const token = jwt.sign(
		{
			...userInfo,
			loginTime: Date.now(),
		}, // 加密内容
		SECRET, // 密钥
		{ expiresIn: '1h' } // 过期时间
	)

	ctx.body = {
		code: 0,
		data: {
			...userInfo,
			token
		}
	}
})

##3 解析token const util = require('util') const verify = util.promisify(jwt.verify)

router.get('/getInfo', async (ctx, next) => {
	// 从请求头获取token
	const token = ctx.header.authorization
	try {
		// 通过util工具,将jwt.verify promise化
		const payload = await verify(
			token.split(' ')[1], // token 去掉Bearer ,取后面
			SECRET // 密钥
		)
		ctx.body = {
			code: 0,
			data: payload
		}
	} catch(e) {
		ctx.body = {
			code: 21,
			msg: 'verify error' + JSON.stringify(e)
		}
	}
})

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