nuxt 实现在其它js文件中使用store的方式

/
  @Description: 
  @Author: lxc
  @Date: 2019-07-02 16:14:07
  @LastEditTime: 2019-08-14 16:08:19
  @LastEditors: lxc
 /
// 导出 store 的地方

import Vue from 'vue'
import Vuex from 'vuex'
import state from './state'
import actions from './actions'
import mutations from './mutations'
import getters from './getters'
import canteen from './modules/canteen'
import contact from './modules/contact'
import health from './modules/health'
import scan from './modules/scan'

Vue.use(Vuex)

let store
const initStore = () => {
 return store || (store = new Vuex.Store({
 // 存放公用数据
 state,
 // 异步操作要通过actions，否则通过cimmit直接操作mutations
 actions,
 // 同步放数据
 mutations,
 getters,
 modules: {
  // store 模块....
 }
 }))
}
export default initStore

import store from '@/store'
const TOKEN = 'testToken'

// 这里只是举个例子
function getToken() {
 return isNotEmpty(store().state.token) ? store().state.token : TOKEN
}

<script>
export default {
 async fetch ({ app, store, params }) {
 let { res } = app.$axios.get('/token');
 store.mit('setToken', res.data.token);
 }
}
</script>

<script>
import Vuex from 'vuex'
 
let store = () => new Vuex.Store({
 state: {
 token: ''
 },
 mutations: {
 setToken (state, token) {
  state.token = token
 }
 },
 actions: {
 nuxtServerInit({ mit }, { req }) {
  let cookie = req.headers.cookie;
 
  // 将cookie转成json对象（自己实现该方法）
  let token = cookieparse(cookie).token;
  mit('setToken', token);
 },
 }
})
 
export default store
</script>