vue+koa+token登录验证

Koa

安装 koa-jwt、jsonwebtoken

index.js

const jwt = require('koa-jwt')

app.use((ctx, next) => {
  return next().catch(err => {
    if (err.status === 401) {
      ctx.body = fail(err.originalError ? err.originalError.message : err.message, 401)
    } else {
      throw err
    }
  })
})
app.use(jwt({ secret: 'secret' }).unless({
  path: [/^\/api\/user\/login/]
}))

router/users.js

const router = require('koa-router')()
const User = require('../models/User.js')
const jwt = require('jsonwebtoken')
const { success, fail } = require('../utils/index.js')

router.prefix('/user')

router.post('/login', async ctx => {
  const user = await User.findOne({ where: ctx.request.body, raw: true })
  if (!user) {
    ctx.body = fail('用户名或密码错误')
  } else {
    const token = jwt.sign(user, 'secret', { expiresIn: '7d' })
    ctx.body = success({ token }, '登陆成功')
  }
})

router.get('/profile', async ctx => {
  // const token = ctx.request.headers.authorization.split(' ').pop()
  const token = ctx.get('Authorization').split(' ').pop()
  jwt.verify(token, 'secret', (err, decode) => {
    if (err) {
      ctx.body = fail(err.message, 401)
    } else {
      ctx.body = success({ userInfo: decode }, '获取成功')
    }
  })
})

module.exports = router

Vue

安装 axios

src/utils/request.js

import axios from 'axios'
import { ElMessage } from 'element-plus'
import store from '@/store/index.js'
import router from '@/router/index.js'

const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API,
  timeout: 5000
}, error => {
  return Promise.reject(error)
})

service.interceptors.request.use(config => {
  if (store.getters.token) {
    config.headers.Authorization = `Bearer ${store.getters.token}`
  }
  return config
})

service.interceptors.response.use(res => {
  const {
    code,
    data,
    message
  } = res.data
  if (code === 200) {
    return data
  } else if (code === 401) {
    ElMessage.error(message)
    store.dispatch('user/logout')
    router.push('/login')
    return Promise.reject(new Error(message))
  } else {
    ElMessage.error(message)
    return Promise.reject(new Error(message))
  }
}, error => {
  console.log(error.message)
  ElMessage.error(error.message)
  return Promise.reject(error)
})

export default service

src/permisssion.js

import router from '@/router/index.js'
import store from '@/store/index.js'

const whiteList = ['/login']

router.beforeEach(async (to, from, next) => {
  if (store.getters.token) {
    if (to.path === '/login') {
      next({ path: '/' })
    } else {
      if (!store.getters.hasUserInfo) {
        await store.dispatch('user/getUserInfo')
      }
      next()
    }
  } else {
    if (whiteList.indexOf(to.path) !== -1) {
      next()
    } else {
      next(`/login?redirect=${to.path}`)
    }
  }
})