<template> <div> <input type="text" v-model="loginForm.username" placeholder="用户名"/> <input type="text" v-model="loginForm.password" placeholder="密码"/> <button @click="login">登录</button> </div></template> <script>import { mapMutations } from 'vuex';export default { data () { return { loginForm: { username: '', password: '' } }; },  methods: { ...mapMutations(['changeLogin']), login () { let _this = this; if (this.loginForm.username === '' || this.loginForm.password === '') { alert('账号或密码不能为空'); } else { this.axios({ method: 'post', url: '/user/login', data: _this.loginForm }).then(res => { console.log(res.data); _this.userToken = 'Bearer ' + res.data.data.body.token; // 将用户token保存到vuex中 _this.changeLogin({ Authorization: _this.userToken }); _this.$router.push('/home'); alert('登陆成功'); }).catch(error => { alert('账号或密码错误'); console.log(error); }); } } }};</script>

import Vue from 'vue';import Vuex from 'vuex';Vue.use(Vuex); const store = new Vuex.Store({  state: { // 存储token Authorization: localStorage.getItem('Authorization') ? localStorage.getItem('Authorization') : '' },  mutations: { // 修改token，并将token存入localStorage changeLogin (state, user) { state.Authorization = user.Authorization; localStorage.setItem('Authorization', user.Authorization); } }}); export default store;

import Vue from 'vue';import Router from 'vue-router';import login from '@/components/login';import home from '@/components/home'; Vue.use(Router); const router = new Router({ routes: [ { path: '/', redirect: '/login' }, { path: '/login', name: 'login', component: login }, { path: '/home', name: 'home', component: home } ]}); // 导航守卫// 使用 router.beforeEach 注册一个全局前置守卫，判断用户是否登陆router.beforeEach((to, from, next) => { if (to.path === '/login') { next(); } else { let token = localStorage.getItem('Authorization');  if (token === 'null' || token === '') { next('/login'); } else { next(); } }}); export default router;

// 添加请求拦截器，在请求头中加tokenaxios.interceptors.request.use( config => { if (localStorage.getItem('Authorization')) { config.headers.Authorization = localStorage.getItem('Authorization'); }  return config; }, error => { return Promise.reject(error); });

 localStorage.removeItem('Authorization'); this.$router.push('/login');