<template>
   <div class="header">
     我是header头部
  </div>
 </template>
 <script type="text/ecmascript-6">
   export default {
  };
 </script>
<style lang="stylus" rel="stylesheet/stylus">
   .header
     color:#fff
     background:rgba(7,17,27,0.5)
     text-align:center
     height:40px
     line-height:40px
 </style>
goods.vue的代码如下,其他两个类似
<template>
   <div class="goods">
     我是goods组件
  </div>
 </template>
 <script type="text/ecmascript-6">
   export default {
  };
 </script>
<style lang="stylus" rel="stylesheet/stylus">
 </style>

<template>
   <div id="app">
     <!--头部组件-->
     <v-header></v-header>
     <div class="tab border-1px">
       <div class="tab-item">
         <router-link to="/goods/goods">商品</router-link>
       </div>
       <div class="tab-item">
         <router-link to="/ratings/ratings">评价</router-link>
       </div>
       <div class="tab-item">
         <router-link to="/seller/seller">商家</router-link>
       </div>
     </div>
     <!-- keep-alive:缓存所有的页面,防止重复渲染DOM -->
     <keep-alive>
       <router-view></router-view>
     </keep-alive>
   </div>
 </template>
 <script type="text/ecmascript-6">
   // 引人组件
  import header from '@/components/header/header';
   export default {
     components: {
       'v-header': header
     }
   };
 </script>
<style lang="stylus" rel="stylesheet/stylus">
   @import "./common/stylus/mixin.styl";
  .tab
     display:flex
     width:100%
     height:40px
     line-height:40px
     border-1px(rgba(7,17,27,0.1))
     .tab-item
       flex:1
       text-align:center
       & > a
         display:block
         font-weight:700
         text-decoration:none
         font-size:14px
         color:rgb(77,85,93)
         &.active
           color:yellow
 </style>

import Vue from 'vue';
 import VueRouter from 'vue-router';
 import VueResource from 'vue-resource';
 //引入自定义的组件
import Goods from '@/components/goods/goods';
 import Ratings from '@/components/ratings/ratings';
 import Seller from '@/components/seller/seller';
Vue.use(VueRouter);
 Vue.use(VueResource);
const routers = [{
   path:'/goods/goods',
   name:'goods',
   component:Goods
 },{
   path:'/ratings/ratings',
   name:'ratings',
   component:Ratings
 },{
   path:'/seller/seller',
   name:'seller',
   component:Seller
 }];
const router =new VueRouter({
   mode:'history', //如果不配置 mode，就会使用默认的 hash 模式，该模式下会将路径格式化为 #! 开头。
   routes:routers,
   linkActiveClass : 'active' // 设置 链接激活时使用的 CSS 类名,默认值: "router-link-active"
 });
 export default router;