vue使用localStorage保存登录信息适用于移动端、PC端

来源：jb51　　时间：2019/5/28 8:54:28　　对本文有异议

众所周知，vue可以用来开发移动端app，可以使用hbuilder将build好的vue打包成一个移动端app，但是用过之后就会发现，使用cookies或者session保存登录的token，在手机端无法保存，每次打开app依然提示登录。那么我们可以使用localStorage来保存登录信息就可以了，具体代码如下

1、vuex stroe代码

index.js

import Vue from 'vue'
import vuex from 'vuex'
import { login, logout, getInfo } from '@/api/login'
import { getToken, setToken, removeToken, setlocalStorage, getlocalStorage, removelocalStorage } from '@/utils/user'
 
Vue.use(vuex);
 
//state为访问状态对象 数字常量等
const state = {
 x:5,
 token: getlocalStorage(),
 nickname: '',
 course_id: 0,
 user_id: 0,
 group_id: 0,
 begin_group_num: 0,
 student_group: 0
};
//访问触发状态mutation是同步的
//actions是异步的
const mutations = {
 SET_TOKEN: (state, token) => {
 state.token = token
 },
 SET_NAME: (state, nickname) => {
 state.nickname = nickname
 },
};
const actions = {
 Login({ commit }, userInfo) {
 const username = userInfo.username.trim()
 return new Promise((resolve, reject) => {
 login(username, userInfo.password).then(response => {
 const data = response.data
 setlocalStorage(data.token)
 commit('SET_TOKEN', data.token)
 resolve()
 }).catch(error => {
 console.log()
 reject(error)
 })
 })
 },
 GetInfo({ commit }) {
 return new Promise((resolve, reject) => {
 getInfo().then(response => {
 const data = response.data
 console.log(data)
 commit('SET_NAME', data.nickname)
 resolve()
 }).catch(error => {
 console.log()
 })
 })
 },
 // 前端 登出
 FedLogOut({ commit }) {
 return new Promise(resolve => {
 commit('SET_TOKEN', '')
 removelocalStorage()
 resolve()
 })
 }
};
 
//getters 类似于生命周期里面的钩子，getters是在页面刚刚加载完毕之后马上加载，类似于生命周期里面的created
const getters = {
 // 测试getters
 x: state => state.x + 200,
};
export default new vuex.Store({
 state,
 mutations,
 getters,
 actions
})

2、localStorage 代码

user.js

import Cookies from 'js-cookie'
 
const TokenKey = 'MuseUi-Token'
 
export function getToken() {
 return Cookies.get(TokenKey)
}
 
export function setToken(token) {
 return Cookies.set(TokenKey, token)
}
 
export function removeToken() {
 return Cookies.remove(TokenKey)
}
 
const SessionKey = 'usertoken'
export function setlocalStorage(token) {
 return localStorage.setItem(SessionKey,token)
}
 
export function getlocalStorage() {
 return localStorage.getItem(SessionKey)
}
 
export function removelocalStorage() {
 return localStorage.setItem(SessionKey,null)
}