安装完成的项目，发现没有路由文件，我们的项目肯定会用到路由，所以直接安装路由

一、目录结构

二、安装router

2.1 执行命令

npm install vue-router@4 -S

2.2 安装完成

2.3 进入项目，创建router目录，再去创建index.js

三、配置src/router/index.js文件内容

import { createRouter, createWebHistory } from "vue-router";
import Home from "../views/Home.vue";

const routes = [
  {
    path: "/",
    name: "Home",
    component: Home,
  },
  {
    path: "/about",
    name: "About",
    component: () =>
      import(/* webpackChunkName: "about" */ "../views/About.vue"),
  },
];

const router = createRouter({
  history: createWebHistory(),
  routes,
});

export default router;

四、在src目录新建views/Home.vue和About.vue

Home.vue和About.vue随便写入点内容即可

五、App.vue文件内容修改

5.1 原本为：

<script setup>
// This starter template is using Vue 3 <script setup> SFCs
// Check out https://v3.vuejs.org/api/sfc-script-setup.html#sfc-script-setup
import HelloWorld from './components/HelloWorld.vue'
</script>

<template>
  <img alt="Vue logo" src="./assets/logo.png" />
  <HelloWorld msg="Hello Vue 3 + Vite" />
</template>

<style>
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
</style>

5.2 修改成：

<template>
	<router-view />
</template>

六、main.js挂载使用router

import { createApp } from 'vue'
import App from './App.vue'
import router from "./router";

createApp(App).use(router).mount('#app')