<template>
  <div>
   <p><router-link :to="{name:'index'}">主頁</router-link></p>
   <p><router-link :to="{name:'login'}">登錄</router-link></p>
   <p><router-link :to="{name:'logout'}">注銷</router-link></p>
   <p><router-link :to="{name:'me'}">個人信息</router-link></p>
   <p>登錄狀態(tài):{{this.$store.state.me.login}}</p>
  </div>
 </template>

import Vue from 'vue'
import router from '../router';
export default{
  namespaced:true,
  state:{
    login :false
  },
  mutations:{
    changeLogin(state,{result}){ 
      state.login = result;
    }
  },
  actions:{
    async checkMe({commit}){
      const result = await Vue.prototype.$http.get('/me').then(data=>data.data);
      if(!result){
        router.push({name:'login'})
        return
      }
      commit('changeLogin',{result})
    }
  }
}

 //serve/app.js文件 express服務(wù)器 
const express = require('express')
//中間件--用于下發(fā)session
const session = require('express-session')
const app = express()

//使用express-session下發(fā)session
app.set('trust proxy', 1)
app.use(session({
 secret: 'keyboard cat',
 resave: false,
 saveUninitialized: true,
}))

<template>
  <div>
    //請求后臺數(shù)據(jù)
    <Button @click="getTest">敏感接口</Button>
    //請求信息展示
    {{result}}
    //頁面跳轉(zhuǎn)組件
   <route_list></route_list>
  </div>
</template>

<script>
import route_list from '../components/route_list'
  export default {
    components:{
      route_list
    },
    data(){
      return{
        result:""
      }
    },
    methods:{
    //請求敏感接口
     async getTest(){
       this.result = await this.$http.get("/").then(res=>res.data)
     }
    }
  }
</script>

app.get('/', function (req, res) {
 if(req.session.login){
  res.send("hello world")
 }else{
 res.send(403)
 }
})

import axios from 'axios';
import url from 'url';
import router from '../src/router'
//創(chuàng)建axios實(shí)例
var instance = axios.create({
  baseURL: '/api'
});

//攔截器
 instance.interceptors.response.use(
  function(response){
    return response;
  },function(error){
    //敏感接口.如果沒有session跳轉(zhuǎn)登錄界面
    if(error.response.status==403){
      router.push({name:"login"})
    }
  }) 

export default instance;

//路由守衛(wèi)
  router.beforeEach((to,from,next)=>{
 if(to.name != 'login' && to.name != 'index'){
  store.dispatch('me/checkMe')
 }
  next()
})

actions:{
    async checkMe({commit}){
      //請求/me接口,對登錄信息進(jìn)行判斷,并保留狀態(tài)
      const result = await Vue.prototype.$http.get('/me').then(data=>data.data);
      //返回值為false,跳轉(zhuǎn)至login
      if(!result){
        router.push({name:'login'})
        return
      }
      commit('changeLogin',{result})
    }
  }

//驗(yàn)證是否登錄
app.get('/me', function (req, res) { 
//判斷session是否為true
 if(req.session.login){
  res.send(true)
 }else{
  res.send(false)
 }
})

<template>
  <div>
<h1>登錄</h1>
<Button @click="login">登錄</Button>
<route_list></route_list>
  </div>
</template>

<script>
import route_list from '../components/route_list'
  export default {
    components:{
      route_list
    },
   methods:{
     async login(){
     //請求登錄接口
      const result = await this.$http.get("/login").then(data=>data.data);
      //記錄登錄狀態(tài)
      this.$store.commit('me/changeLogin',{result})
     }
    },
}
</script>

//登錄接口,更改session狀態(tài)
app.get('/login', function (req, res) { 
 req.session.login = true,
 res.send(true)
})

<template>
  <div>
    <h1>注銷</h1>
<Button @click="login">注銷</Button>
<route_list></route_list>
  </div>
</template>
<script>
import route_list from '../components/route_list'
  export default {
    components:{
      route_list
    },
  data(){
    return{
      
    }
  },
   methods:{
     async login(){
      const result = await this.$http.get("/logout").then(data=>data.data);
      this.$store.commit('me/changeLogin',{result})
     }
    },
    
}
</script>

//登錄接口,更改session狀態(tài)
app.get('/login', function (req, res) { 
 req.session.login = false,
 res.send(false)
})