13.Vue路由嵌套

1.什么是路由嵌套

　　嵌套路由又称子路由，在实际应用中，通常由多层嵌套的组件组合而成。同样地，URL 中各段动态路径也按某种结构对应嵌套的各层组件，例如：

/user/foo/profile                     /user/foo/posts
+------------------+                  +-----------------+
| User             |                  | User            |
| +--------------+ |                  | +-------------+ |
| | Profile      | |  +------------>  | | Posts       | |
| |              | |                  | |             | |
| +--------------+ |                  | +-------------+ |
+------------------+                  +-----------------+

2.使用

1.在views中创建user目录，user目录下创建用户信息组件Profile.vue

<template>
    <div>个人信息</div>
</template>

<script>
    export default {
        name: "UserProfile"
    }
</script>

<style scoped>

</style>

2.在user目录下创建用户列表视图组件List.vue

<template>
    <div>用户列表</div>
</template>

<script>
    export default {
        name: "UserList"
    }
</script>

<style scoped>

</style>

3.修改router目录下的index.js路由配置管理文件

说明：主要在路由配置中增加了 children 数组配置，用于在该组件下设置嵌套路由

import Vue from 'vue'
import Router from 'vue-router'

import Login from "../views/Login"
import Main from '../views/Main'


import UserProfile from "../views/user/Profile"
import UserList from '../views/user/List'

Vue.use(Router);

export default new Router({
  routes: [
    {
      // 登录页
      path: '/login',
      name: 'Login',
      component: Login
    },
    {
      // 首页
      path: '/main',
      name: 'Main',
      component: Main,
      // 配置嵌套路由
27       children: [
28         {
29           path: '/user/profile',
30           component: UserProfile
31         },
32         {
33           path: '/user/list',
34           component: UserList
35         }
36       ]
    }
  ]
});

4.修改首页视图Main.vue

说明：

　　在 <el-main> 元素中配置了 <router-view /> 用于展示嵌套路由,主要使用 <router-link to="/user/profile">个人信息</router-link> 展示嵌套路由内容

<template>
  <div>
    <el-container>
      <el-aside width="200px">
        <el-menu :default-openeds="['1']">

          <el-submenu index="1">
            <template slot="title"><i class="el-icon-caret-right"></i>用户管理</template>
            <el-menu-item-group>
10               <el-menu-item index="1-1">
11                 <router-link to="/user/profile">个人信息</router-link>
12               </el-menu-item>
13               <el-menu-item index="1-2">
14                 <router-link to="/user/list">用户列表</router-link>
15               </el-menu-item>
            </el-menu-item-group>
          </el-submenu>

          <el-submenu index="2">
            <template slot="title"><i class="el-icon-caret-right"></i>内容管理</template>
            <el-menu-item-group>
              <el-menu-item index="2-1">分类管理</el-menu-item>
              <el-menu-item index="2-2">内容列表</el-menu-item>
            </el-menu-item-group>
          </el-submenu>

        </el-menu>
      </el-aside>

      <el-container>
        <el-header style="text-align: right; font-size: 12px">
          <el-dropdown>
            <i class="el-icon-setting" style="margin-right: 15px"></i>
            <el-dropdown-menu slot="dropdown">
              <el-dropdown-item>个人信息</el-dropdown-item>
              <el-dropdown-item>退出登录</el-dropdown-item>
            </el-dropdown-menu>
          </el-dropdown>
        </el-header>

41         <el-main>
42           <router-view />
43         </el-main>
      </el-container>
    </el-container>
  </div>
</template>

<script>
  export default {
    name: "Main"
  }
</script>

<style scoped lang="scss">
  .el-header {
    background-color: #B3C0D1;
    color: #333;
    line-height: 60px;
  }

  .el-aside {
    color: #333;
  }
</style>