最后说说Vue2 SSR 的 Cookies 问题

import axios from 'axios'
import qs from 'qs'
import md5 from 'md5'
import config from './config-server'

const parseCookie = cookies => {
  let cookie = ''
  Object.keys(cookies).forEach(item => {
    cookie += item + '=' + cookies[item] + '; '
  })
  return cookie
}

export const api = cookies => {
  return {
    api: axios.create({
      baseURL: config.api,
      headers: {
        'X-Requested-With': 'XMLHttpRequest',
        cookie: parseCookie(cookies)
      },
      timeout: config.timeout
    }),
    post(url, data) {
      return this.api({
        method: 'post',
        url,
        data: qs.stringify(data),
        headers: {
          'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
        }
      })
    },
    async get(url, params) {
      return this.api({
        method: 'get',
        url,
        params
      })
    }
  }
}

// 前后代码略
  const context = {
    title: 'M.M.F 小屋',
    url: req.url,
    cookies: req.cookies
  }
  renderer.renderToString(context, (err, html) => {
    if (err) {
      return handleError(err)
    }
    res.end(html)
    if (!isProd) {
      console.log(`whole request: ${Date.now() - s}ms`)
    }
  })
// 前后代码略

import { createApp } from './app'
import { api } from '~api'
export default function(context) {
  return new Promise((resolve, reject) => {
    const s = Date.now()
    const { app, router, store } = createApp()
    const url = context.url
    const fullPath = router.resolve(url).route.fullPath
    if (fullPath !== url) {
      reject({ url: fullPath })
    }
    router.push(url)
    router.onReady(() => {
      const matchedComponents = router.getMatchedComponents()
      if (!matchedComponents.length) {
        reject({ code: 404 })
      }
      // 注意这里, 在步骤2中, context里已经带有cookies了
      // 创建一个新的api实例, 并把cookies传进去
      // 同时注入store和根状态中
      // 注入 store 中, 可以方便在组件中用
      // 注入 根状态中, 可以方便在 vuex 的 actions 中用
      store.$api = store.state.$api = api(context.cookies)
      Promise.all(
        matchedComponents.map(
          ({ asyncData }) =>
            asyncData &&
            asyncData({
              store,
              route: router.currentRoute,
              cookies: context.cookies,
              isServer: true,
              isClient: false
            })
        )
      )
        .then(() => {
          console.log(`data pre-fetch: ${Date.now() - s}ms`)
          context.state = store.state
          context.isProd = process.env.NODE_ENV === 'production'
          resolve(app)
        })
        .catch(reject)
    }, reject)
  })
}

import api from '~api'
// 前后代码略
const { app, router, store } = createApp()

if (window.__INITIAL_STATE__) {
  store.replaceState(window.__INITIAL_STATE__)
  // 客户端就没必要用工厂函数了, 用也可以, 但是需注意, api里的属性必须和服务端的保持一致
  store.$api = store.state.$api = api
}
// 前后代码略

const actions = {
  async ['getArticleList'](
    {
      commit,
      state,
      rootState: { $api } // 这里就是前面注入的api
    },
    config
  ) {
    const {
      data: { data, code }
    } = await $api.get('frontend/article/list', { ...config, cache: true })
    if (data && code === 200) {
      commit('receiveArticleList', {
        ...config,
        ...data
      })
    }
  }
}

methods: {
    async recover(id) {
      const {
        data: { code, message }
      } = await this.$store.$api.get('frontend/comment/recover', { id })
      if (code === 200) {
        this.$store.commit('global/comment/recoverComment', id)
      }
    }
}