router.js

import Vue from 'vue'
import VueRouter from 'vue-router'
import store from './store/store'
import * as types from './store/types'
import Index from './index.vue'
import Repository from './repository.vue'
import Login from './login.vue'

Vue.use(VueRouter)

const routes = [
    {
        path: '/',
        name: '/',
        component: Index
    },
    {
        path: '/repository',
        name: 'repository',
        meta: {
            requireAuth: true,
        },
        component: Repository
    },
    {
        path: '/login',
        name: 'login',
        component: Login
    }
];


// 頁面重新整理時，重新賦值token
if (window.localStorage.getItem('token')) {
    store.commit(types.LOGIN, window.localStorage.getItem('token'))
}

const router = new VueRouter({
    routes
});

router.beforeEach((to, from, next) => {
    if (to.matched.some(r => r.meta.requireAuth)) {
        if (store.state.token) {
            next();
        }
        else {
            next({
                path: '/login',
                query: {redirect: to.fullPath}
            })
        }
    }
    else {
        next();
    }
})

export default router;
 

多個請求 401 的情況，重定向到登入頁面 query 引數錯誤

http.js

import axios from 'axios'
import store from './store/store'
import * as types from './store/types'
import router from './router'

// axios 配置
axios.defaults.timeout = 5000
axios.defaults.baseURL = 'https://api.github.com'

// http request 攔截器
axios.interceptors.request.use(
  config => {
    if (store.state.token) {
      config.headers.Authorization = `token ${store.state.token}`
    }
    return config
  },
  err => {
    return Promise.reject(err)
  },
)

// http response 攔截器
axios.interceptors.response.use(
  response => {
    return response
  },
  error => {
    if (error.response) {
      switch (error.response.status) {
        case 401:
          // 401 清除token資訊並跳轉到登入頁面
          store.commit(types.LOGOUT)
          
          // 只有在當前路由不是登入頁面才跳轉
          router.currentRoute.path !== 'login' &&
            router.replace({
              path: 'login',
              query: { redirect: router.currentRoute.path },
            })
      }
    }
    // console.log(JSON.stringify(error));//console : Error: Request failed with status code 402
    return Promise.reject(error.response.data)
  },
)

export default axios
 

login.vue

<template>
  <div class="container">
    <form class="login-form" novalidate @submit.stop.prevent="login">
      <md-input-container md-has-password>
        <label>Github Personal Token(Press Enter)</label>
        <md-input type="password" v-model="token"></md-input>
      </md-input-container>
    </form>
    <md-button href="https://github.com/settings/tokens/new" target="_blank" class="md-raised md-primary">generate your token</md-button>
  </div>
</template>

<script type="application/ecmascript">
  import * as types from './store/types'
  export default {
    name: '',
    data () {
      return {
        msg: '',
        token: ''
      }
    },
    mounted(){
      this.$store.commit(types.TITLE, 'Login');
    },
    methods: {
      login(){
        if (this.token) {
          this.$store.commit(types.LOGIN, this.token)
          let redirect = decodeURIComponent(this.$route.query.redirect || '/');
          this.$router.push({
            path: redirect
          })
        }
      }
    }
  }
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped lang='scss' rel="stylesheet/scss" type="text/css">
  .login-form{
    width: 400px;
    margin: 50px auto;
  }
</style>
 

app.vue

<template>
    <div id="app">
        <md-toolbar class="black">
            <div class="container">
                <div class="left">
                    <a href="https://github.com" target="_blank">
                        <svg aria-hidden="true" class="octicon octicon-mark-github" height="32" version="1.1"
                             viewBox="0 0 16 16" width="32">
                            <path fill-rule="evenodd"
                                  d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-.23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82.64-.18 1.32-.27 2-.27.68 0 1.36.09 2 .27 1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 2.2 0 .21.15.46.55.38A8.013 8.013 0 0 0 16 8c0-4.42-3.58-8-8-8z"></path>
                        </svg>
                    </a>
                    <span class="md-title title">{{title}}</span>
                </div>
              <div class="right">
                <a v-on:click="logout"  class=" md-default" v-show="token">logout</a>
              </div>
            </div>
        </md-toolbar>
        <router-view>
        </router-view>
    </div>
</template>

<script>
    import * as types from './store/types'
    import {mapState} from 'vuex'
    export default {
        name: 'app',
        data () {
            return {
                msg: 'Welcome to Your Vue.js App',
            }
        },
        computed: mapState({
            title: state => state.title,
            token: state => state.token
        }),
      methods: {
          logout(){
            this.$store.commit(types.LOGOUT)
            this.$router.push({
              path: '/'
            })
          }
      }
    }
</script>

<style lang="scss">
    @import "../node_modules/vue-material/dist/vue-material.css";
    @import "assets/css.css";
    @import "assets/icon.css";
    #app {
        font-family: 'Avenir', Helvetica, Arial, sans-serif;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        text-align: center;
        color: #2c3e50;
    }
    .container {
        width: 1000px;
        margin: 0 auto;
    }
    .left {
        float: left;
        text-align: left;
    }
    .right{
        float: right;
    }
    .md-toolbar .title {
        vertical-align: text-top;
        margin-left: 5px;
    }
    h1, h2 {
        font-weight: normal;
    }
    ul {
        list-style-type: none;
        padding: 0;
    }
    li {
        display: inline-block;
        margin: 0 10px;
    }
    a {
        color: #42b983;
    }
</style>

store.js

import Vuex from 'vuex'
import Vue from 'vue'
import * as types from './types'

Vue.use(Vuex);
export default new Vuex.Store({
    state: {
        user: {},
        token: null,
        title: ''
    },
    mutations: {
        [types.LOGIN]: (state, data) => {
            localStorage.token = data;
            state.token = data;
        },
        [types.LOGOUT]: (state) => {
            localStorage.removeItem('token');
            state.token = null
        },
        [types.TITLE]: (state, data) => {
            state.title = data;
        }
    }
})

type.js

export const LOGIN = 'login';

export const LOGOUT = 'logout';

export const TITLE = 'title'