1.在plugins文件下创建一个route.js

import { getCookie, setCookie } from '@/pages/logreg/api/cookie'
import axios from 'axios'

export default ({ app, store }) => {
  app.router.beforeEach((to, from, next) => {
    let isClient = process.client
    if (isClient) {
      let currentUrl = location.href
      if (currentUrl.indexOf('access_token=') !== -1) {
        let wechattoken = currentUrl.split('access_token=')[1]
        wechattoken = wechattoken.split('&')[0]
        setCookie('token', wechattoken, 5)
      }
      let token = getCookie('token')
      if (token) {
        store.state.user.userinfo.token = token
        axios
          .get('https://api.ass.net/pub/api/user_info', {
            params: {
              token
            }
          })
          .then(res => {
            res = res.data
            if (res.code == 0) {
              res = res.data
              res.headImg = res.headImg.replace('http:', 'https:')
              store.state.user.userinfo = Object.assign(
                {},
                store.state.user.userinfo,
                res
              )
            }
          })
          .catch(error => console.log(error))
      }
    }
    next()
  })
}

2.在nuxt.config.js里面配置

  plugins: [
    { src: '@/plugins/route', ssr: true }
  ],