详解vue后台系统登录态管理

import { login, logout } from '@/servers/login'
	import { getToken, setToken, removeToken } from '@/utils/auth' // 这是上面的js-cookie暴露出来的方法
	const user = {
  state: {
    userInfo: "",
    token: getToken(),
    roles: []
  },
  mutations: {
    SET_TOKEN: (state, token) => {
      state.token = token
    }
  },
  actions: {
    // 用户名登录
    login({ mit }, userInfo) {
      const userName = userInfo.userName.trim()
      return new Promise((resolve, reject) => {
        login({userName: userName, password: userInfo.password}).then(res 						=> {
          if (res.status.statusCode === 0) {
            const data = res.result
            mit('SET_TOKEN', data.token)
            setToken(data.token)
            localStorage.setItem('userInfo', JSON.stringify(data))
            resolve()
          }
          else {
            resolve(res.status.statusReason)
          }
          
        })
        .catch(error => {
          reject(error)
        })
      })
    },
    // 登出
    logout({ mit }, userId ) {
      return new Promise((resolve, reject) => {
        logout({id: userId}).then((res) => {
          if (res.status.statusCode === 0) {
            mit('SET_TOKEN', '')
            removeToken()
            localStorage.clear()
            resolve()
          }
          else {
            resolve(res.status.statusReason)
          }
        })
        .catch(error => {
          reject(error)
        })
      })
    }
  }
}
export default user 

const getters = {
  userInfo: state => state.user.userInfo
}

export default getters

import Vue from 'vue'
import Vuex from 'vuex'
import user from './modules/user'
import getters from './getters'

Vue.use(Vuex)

const store = new Vuex.Store({
  modules: {
    user
  },
  getters
})

export default store

this.$store.dispatch('login', {userName: userName, password: password}).then((res) => {
		console.log(res)
		if(!res) {
			//	登录成功后的逻辑
		} else {
			//	登录失败后的逻辑
		}
	})

this.$store.dispatch('logout', userId).then((res) => {
	   if (!res) {
	    //	退出成功的逻辑
	   }
	   else {
	    //	退出失败的逻辑
	   }
	 })