浅谈Vue SSR 的 Cookies 问题(2)

日期：2020-05-11 栏目：程序人生浏览：次

所以出现了现在的第三种方案

第三种方案

思路: 将 Cookies 作为参数注入到组件的asyncData方法, 然后用传参数的方法把 cookies 传给 api, 不得不说这种方法很麻烦, 但是这是个人能想到的比较好的方法

步骤1:

还是在 server.js 里, 把 cookies 注入到 context 中

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)
})

步骤2:

在entry-server.js里, 将cookies作为参数传给 asyncData 方法

Promise.all(matchedComponents.map(({asyncData}) => asyncData && asyncData({
 store,
 route: router.currentRoute,
 cookies: context.cookies,
 isServer: true,
 isClient: false
}))).then(() => {
 context.state = store.state
 context.isProd = process.env.NODE_ENV === 'production'
 resolve(app)
}).catch(reject)

步骤3:

在组件里, 把 cookies 做为参数给 Vuex 的 actions

export default {
 name: 'frontend-index',
 async asyncData({store, route, cookies}, config = { page: 1}) {
  config.cookies = cookies
  await store.dispatch('frontend/article/getArticleList', config)
 }
 // .....
}

步骤4:

在 Vuex 里将 cookies 做为参数给 api

import api from '~api'

const state = () => ({
 lists: {
  data: [],
  hasNext: 0,
  page: 1,
  path: ''
 },
})

const actions = {
 async ['getArticleList']({commit, state}, config) {
  // vuex 作为临时缓存
  if (state.lists.data.length > 0 && config.path === state.lists.path && config.page === 1) {
   return
  }
  let cookies
  if (config.cookies) {
   cookies = config.cookies
   delete config.cookies
  }
  const { data: { data, code} } = await api.get('frontend/article/list', {...config, cache: true}, cookies)
  if (data && code === 200) {
   commit('receiveArticleList', {
    ...config,
    ...data,
   })
  }
 },
}

const mutations = {
 ['receiveArticleList'](state, {list, hasNext, hasPrev, page, path}) {
  if (page === 1) {
   list = [].concat(list)
  } else {
   list = state.lists.data.concat(list)
  }
  state.lists = {
   data: list, hasNext, hasPrev, page, path
  }
 },
}

const getters = {

}

export default {
 namespaced: true,
 state,
 actions,
 mutations,
 getters
}

这里一定要注意, state 一定要用函数返回值来初始化 state, 不然会导致所有用户共用 state

步骤5:

在 api 里接收 cookies, 并加到 axios 的 headers 里

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

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

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

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浅谈Vue SSR 的 Cookies 问题(2)

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