Vue從入門到實戰 Day08~Day10

智慧商城項目

1. 項目演示

目標：查看項目效果，明確功能模塊 -> 完整的電商購物流程

2. 項目收獲

目標：明確做完本項目，能夠收獲哪些內容

3. 創建項目

目標：基于VueCli自定義創建項目架子

4. 調整初始化目錄

目標：將目錄調整成符合企業規范的目錄

5. vant 組件庫

目標：認識第三方Vue組件庫 vant-ui

組件庫：第三方封裝好了很多的組件，整合到一起就是一個組件庫。

https://vant-contrib.gitee.io/vant/v2/#/zh-CN/

上面的鏈接打不開的試試這個：Vant 2 - Mobile UI Components built on Vue

6. 其他Vue組件庫

目標：了解其他Vue組件庫

Vue的組件庫并不是唯一的，vant-ui也僅僅是組件庫的一種。

一般會按照不同平臺進行分類：

①PC端：element-ui、（element-plus）、ant-design-vue

②移動端：vant-ui、? ?Mint UI（餓了么）、 Cube UI（滴滴）

7. vant全部導入和按需導入

目標：明確全部導入和按需導入的區別

目標：閱讀文檔，掌握全部導入的基本使用

官網：Vant 2 - Mobile UI Components built on Vue

全部導入：

①安裝vant-ui

npm i vant@latest-v2 -S

如果出現下面的依賴沖突問題，可以嘗試更新依賴

②main.js中注冊

import Vant from 'vant'
import 'vant/lib/index.css'
// 把vant中所有的組件都導入了
Vue.use(Vant)

③使用測試

<van-button type="primary">主要按鈕</van-button>
<van-button type="info">信息按鈕</van-button>

目標：閱讀文檔，掌握按需導入的基本使用

按需導入：

①安裝vant-ui(已安裝)

npm i vant@latest-v2 -S

②安裝插件

npm i babel-plugin-import -D

③babel.config.js中配置

module.exports = {presets: ['@vue/cli-plugin-babel/preset'],plugins: [['import', {libraryName: 'vant',libraryDirectory: 'es',style: true}, 'vant']]
};

④main.js 按需導入注冊

import Vue from 'vue';
import { Button } from 'vant';Vue.use(Button);

⑤測試使用

<van-button type="primary">主要按鈕</van-button>
<van-button type="info">信息按鈕</van-button>
<van-button type="default">默認按鈕</van-button>

⑥提取到vant-ui.js中，main.js中導入

// 導入按需導入的配置文件
import '@/utils/vant-ui'

8. 項目中的 vw 適配

目標：基于 postcss 插件實現項目vw適配

官方配置

①安裝插件

npm i postcss-px-to-viewport@1.1.1 -D

②根目錄新建postcss.config.js文件，填入配置

// postcss.config.js
module.exports = {plugins: {'postcss-px-to-viewport': {// 標準屏寬度viewportWidth: 375}}
}

9. 路由設計配置

目標：分析項目頁面，設計路由，配置一級路由

但凡是單個頁面，獨立展示的，都是一級路由

main.js

import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '@/views/login'
import Layout from '@/views/layout'
import Search from '@/views/search'
import SearchList from '@/views/search/list'
import ProDetail from '@/views/prodetail'
import Pay from '@/views/pay'
import MyOrder from '@/views/myorder'Vue.use(VueRouter)const router = new VueRouter({routes: [{ path: '/login', component: Login },{ path: '/', component: Layout },{ path: '/search', component: Search },{ path: '/searchlist', component: SearchList },// 動態路由傳參，確認將來是哪個商品，路由參數中攜帶id{ path: '/prodetail/:id', component: ProDetail },{ path: '/pay', component: Pay },{ path: '/myorder', component: MyOrder }]
})export default router

目標：閱讀vant組件庫文檔，實現底部導航tabbar

tabbar標簽頁：

①vant-ui.js 按需引入

import { Tabbar, TabbarItem } from 'vant'
Vue.use(Tabbar)
Vue.use(TabbarItem)

②layout.vue粘貼官方代碼測試

<van-tabbar><van-tabbar-item icon="home-o">標簽</van-tabbar-item><van-tabbar-item icon="search">標簽</van-tabbar-item><van-tabbar-item icon="friends-o">標簽</van-tabbar-item><van-tabbar-item icon="setting-o">標簽</van-tabbar-item>
</van-tabbar>

③修改文字、圖表、顏色

<van-tabbar active-color="#ee0a24" inactive-color="#000"><van-tabbar-item icon="wap-home-o">首頁</van-tabbar-item><van-tabbar-item icon="apps-o">分類頁</van-tabbar-item><van-tabbar-item icon="shopping-cart-o">購物車</van-tabbar-item><van-tabbar-item icon="user-o">我的</van-tabbar-item>
</van-tabbar>

目標：基于底部導航，完成二級路由配置

1. 配置二級路由 router/index.js

import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '@/views/login'
import Layout from '@/views/layout'
import Search from '@/views/search'
import SearchList from '@/views/search/list'
import ProDetail from '@/views/prodetail'
import Pay from '@/views/pay'
import MyOrder from '@/views/myorder'
import Home from '@/views/layout/home'
import Category from '@/views/layout/category'
import Cart from '@/views/layout/cart'
import User from '@/views/layout/user'Vue.use(VueRouter)const router = new VueRouter({routes: [{ path: '/login', component: Login },{path: '/',component: Layout,redirect: '/home',children: [{ path: '/home', component: Home },{ path: '/category', component: Category },{ path: '/cart', component: Cart },{ path: '/user', component: User }]},{ path: '/search', component: Search },{ path: '/searchlist', component: SearchList },// 動態路由傳參，確認將來是哪個商品，路由參數中攜帶id{ path: '/prodetail/:id', component: ProDetail },{ path: '/pay', component: Pay },{ path: '/myorder', component: MyOrder }]
})export default router

2. 配置導航鏈接、配置二級路由出口 src/views/layout/index.vue

<template><div><!-- 二級路由出口，二級組件展示的位置 --><router-view></router-view><van-tabbar active-color="#ee0a24" inactive-color="#000" route><van-tabbar-item to="/home" icon="wap-home-o">首頁</van-tabbar-item><van-tabbar-item to="/category" icon="apps-o">分類頁</van-tabbar-item><van-tabbar-item to="/cart" icon="shopping-cart-o">購物車</van-tabbar-item><van-tabbar-item to="/user" icon="user-o">我的</van-tabbar-item></van-tabbar></div>
</template><script>
export default {name: 'LayoutIndex'
}
</script><style></style>

10. 登錄頁靜態布局

目標：基于筆記，快速實現登錄頁靜態布局

1. 準備工作

（1）新建`styles/common.less`充值默認樣式

（2）main.js導入common.less

（3）圖片素材拷貝到assets目錄【備用】

2. 登錄頁靜態布局編寫

（1）頭部組件說明（NavBar）

utils/vant-ui.js

import Vue from 'vue';
import { NavBar } from 'vant';Vue.use(NavBar);

views/login/index.vue

<template><div class="login"><!-- 頭部 NavBar--><van-nav-bar title="會員登錄" left-arrow @click-left="$router.go(-1)"/><!-- 主體 --></div>
</template><script>
export default {name: 'LoginIndex'
}
</script><style></style>

（2）通用樣式覆蓋

src/styles/common.less

// 重置默認樣式
* {margin: 0;padding: 0;box-sizing: border-box;
}// 文字溢出省略號
.text-ellipsis-2 {overflow: hidden;-webkit-line-clamp: 2;text-overflow: ellipsis;display: -webkit-box;-webkit-box-orient: vertical;
}// 添加導航的通用樣式
.van-nav-bar {.van-nav-bar__arrow {color: #333;}
}

（3）其他靜態結構編寫

<template><div class="login"><van-nav-bar title="會員登錄" left-arrow @click-left="$router.go(-1)" /><div class="container"><div class="title"><h3>手機號登錄</h3><p>未注冊的手機號登錄后將自動注冊</p></div><div class="form"><div class="form-item"><input v-model="mobile" class="inp" maxlength="11" placeholder="請輸入手機號碼" type="text"></div><div class="form-item"><input v-model="picCode" class="inp" maxlength="5" placeholder="請輸入圖形驗證碼" type="text"><img v-if="picUrl" :src="picUrl" alt=""></div><div class="form-item"><input v-model="msgCode" class="inp" placeholder="請輸入短信驗證碼" type="text"><button >{{ second === totalSecond ? '獲取驗證碼' : second + '秒后重新發送'}}</button></div></div><div class="login-btn">登錄</div></div></div>
</template><script>export default {name: 'LoginPage',data () {return {picKey: '', // 將來請求傳遞的圖形驗證碼唯一標識picUrl: '', // 存儲請求渲染的圖片地址totalSecond: 60, // 總秒數second: 60, // 當前秒數，開定時器對 second--timer: null, // 定時器 idmobile: '', // 手機號picCode: '', // 用戶輸入的圖形驗證碼msgCode: '' // 短信驗證碼}}
}
</script><style lang="less" scoped>
.container {padding: 49px 29px;.title {margin-bottom: 20px;h3 {font-size: 26px;font-weight: normal;}p {line-height: 40px;font-size: 14px;color: #b8b8b8;}}.form-item {border-bottom: 1px solid #f3f1f2;padding: 8px;margin-bottom: 14px;display: flex;align-items: center;.inp {display: block;border: none;outline: none;height: 32px;font-size: 14px;flex: 1;}img {width: 94px;height: 31px;}button {height: 31px;border: none;font-size: 13px;color: #cea26a;background-color: transparent;padding-right: 9px;}}.login-btn {width: 100%;height: 42px;margin-top: 39px;background: linear-gradient(90deg,#ecb53c,#ff9211);color: #fff;border-radius: 39px;box-shadow: 0 10px 20px 0 rgba(0,0,0,.1);letter-spacing: 2px;display: flex;justify-content: center;align-items: center;}
}
</style>

效果：

11. request模塊 - axios封裝

目標：將axios請求方法，封裝到request模塊

使用axios來請求后端接口，一般會對axios進行一些配置（如：配置基礎地址，請求響應攔截器等）。所以項目開發中，都會對axios進行基本的二次封裝，單獨封裝到一個request模塊中，便于維護使用。

接口文檔地址：https://apifox.com/apidoc/shared-12ab6b18-abc2-444c-ad11-0e60f5693f66/doc-2221080(已失效)

基地址：http://smart-shop.itheima.net/index.php?s=/api/

1. 安裝axios

npm install axios

2. 新建request模塊，創建實例 & 配置，導出實例

axios官方文檔：Axios 實例 | Axios中文文檔 | Axios中文網

utils/request.js

import axios from 'axios'// 創建axios實例，將來對創建出來的實例，進行自定義配置
// 好處：不會污染原始的axios實例
const instance = axios.create({baseURL: 'http://smart-shop.itheima.net/index.php?s=/api/',timeout: 5000
})// 自定義配置 - 請求/響應 攔截器
// 添加請求攔截器
instance.interceptors.request.use(function (config) {// 在發送請求之前做些什么return config
}, function (error) {// 對請求錯誤做些什么return Promise.reject(error)
})// 添加響應攔截器
instance.interceptors.response.use(function (response) {// 2xx 范圍內的狀態碼都會觸發該函數。// 對響應數據做點什么(默認axios會多包裝一層data，需要響應攔截器中處理一下)return response.data
}, function (error) {// 超出 2xx 范圍的狀態碼都會觸發該函數。// 對響應錯誤做點什么return Promise.reject(error)
})// 導出配置好的實例
export default instance

3. 測試使用

src/views/login/index.vue

<script>
import request from '@/utils/request'
export default {name: 'LoginPage',async created () {const res = await request.get('/captcha/image')console.log(res)}
}
</script>

12. 圖形驗證碼功能完成

目標：基于請求回來的base64圖片，實現圖形驗證碼功能

說明：

1. 圖形驗證碼，本質就是一個請求回來的圖片

2. 用戶將來輸入圖形驗證碼，用于強制人機交互，可以抵御機器自動化攻擊（例如：避免批量請求獲取短信）

需求：

1. 動態將請求回來的base64圖片，解析渲染除了

2. 點擊驗證碼圖片盒子，要刷新驗證碼

src/views/login/index.vue

<template><div class="login"><van-nav-bar title="會員登錄" left-arrow @click-left="$router.go(-1)" /><div class="container"><div class="title"><h3>手機號登錄</h3><p>未注冊的手機號登錄后將自動注冊</p></div><div class="form"><div class="form-item"><input v-model="mobile" class="inp" maxlength="11" placeholder="請輸入手機號碼" type="text"></div><div class="form-item"><input v-model="picCode" class="inp" maxlength="5" placeholder="請輸入圖形驗證碼" type="text"><img v-if="picUrl" :src="picUrl" @click="getPicCode" alt=""></div><div class="form-item"><input v-model="msgCode" class="inp" placeholder="請輸入短信驗證碼" type="text"><button >{{ second === totalSecond ? '獲取驗證碼' : second + '秒后重新發送'}}</button></div></div><div class="login-btn">登錄</div></div></div>
</template><script>
import request from '@/utils/request'
export default {name: 'LoginPage',data () {return {picKey: '', // 將來請求傳遞的圖形驗證碼唯一標識(將來驗證需要攜帶)picUrl: '', // 存儲請求渲染的圖片地址totalSecond: 60, // 總秒數second: 60, // 當前秒數，開定時器對 second--timer: null, // 定時器 idmobile: '', // 手機號picCode: '', // 用戶輸入的圖形驗證碼msgCode: '' // 短信驗證碼}},async created () {// const res = await request.get('/captcha/image')// console.log(res)this.getPicCode()},methods: {// 獲取圖形驗證碼async getPicCode () {const { data: { base64, key } } = await request.get('/captcha/image')this.picUrl = base64 // 存儲地址this.picKey = key // 存儲唯一標識}}
}
</script><style lang="less" scoped></style>

13. api接口模塊 - 封裝圖片驗證碼接口

目標：將請求封裝成方法，統一存放到api模塊，與頁面分離

1. 新建請求模塊，封裝請求函數

src/api/login.js

// 此處用于存放所有登錄相關的接口請求
import request from '@/utils/request'
// 1. 獲取圖形驗證碼
export const getPicCode = () => {return request.get('/captcha/image')
}

2. 頁面中導入調用

src/views/login/index.vue

<script>
import { getPicCode } from '@/api/login'
export default {name: 'LoginPage',data () {return {picKey: '', // 將來請求傳遞的圖形驗證碼唯一標識(將來驗證需要攜帶)picUrl: '', // 存儲請求渲染的圖片地址picCode: '' // 用戶輸入的圖形驗證碼}},async created () {// const res = await request.get('/captcha/image')// console.log(res)this.getPicCode()},methods: {// 獲取圖形驗證碼async getPicCode () {const { data: { base64, key } } = await getPicCode()this.picUrl = base64 // 存儲地址this.picKey = key // 存儲唯一標識}}
}
</script>

14. Toast輕提示

目標：閱讀文檔，掌握toast輕提示

1. 注冊安裝：

import { Toast } from 'vant'
Vue.use(Toast)

2. 兩種使用方式

①導入調用（組件內或非組件內均可）

import { Toast } from 'vant'
Toast('提示內容')

②通過this直接調用（必須組件內）

本質：將方法，注冊掛載到了Vue原型上 Vue.prototype.$toast = xxx

this.$toast('提示內容')

15. 短信驗證倒計時

目標：實現短信驗證倒計時功能

步驟分析：

1. 點擊按鈕，實現倒計時效果

src/views/login/index.vue

<template><div class="login"><van-nav-bar title="會員登錄" left-arrow @click-left="$router.go(-1)" /><div class="container"><div class="title"><h3>手機號登錄</h3><p>未注冊的手機號登錄后將自動注冊</p></div><div class="form"><div class="form-item"><input v-model="mobile" class="inp" maxlength="11" placeholder="請輸入手機號碼" type="text"></div><div class="form-item"><input v-model="picCode" class="inp" maxlength="5" placeholder="請輸入圖形驗證碼" type="text"><img v-if="picUrl" :src="picUrl" @click="getPicCode" alt=""></div><div class="form-item"><input v-model="msgCode" class="inp" placeholder="請輸入短信驗證碼" type="text"><button @click="getCode">{{ second === totalSecond ? '獲取驗證碼' : second + '秒后重新發送' }}</button></div></div><div class="login-btn">登錄</div></div></div>
</template><script>
import { getPicCode } from '@/api/login'
// import { Toast } from 'vant'
export default {name: 'LoginPage',data () {return {picKey: '', // 將來請求傳遞的圖形驗證碼唯一標識(將來驗證需要攜帶)picUrl: '', // 存儲請求渲染的圖片地址totalSecond: 60, // 總秒數second: 60, // 當前秒數，開定時器對 second--timer: null, // 定時器 idmobile: '', // 手機號picCode: '', // 用戶輸入的圖形驗證碼msgCode: '' // 短信驗證碼}},async created () {this.getPicCode()},methods: {// 獲取圖形驗證碼async getPicCode () {const { data: { base64, key } } = await getPicCode()this.picUrl = base64 // 存儲地址this.picKey = key // 存儲唯一標識// Toast('獲取圖形驗證碼成功')// this.$toast('666666')// this.$toast.success('成功文案')},// 獲取短信驗證碼，getCode () {// 當目前沒有定時器開著，且 totalSecond 和 second一致（秒數歸位）才可以倒計時if (!this.timer && this.second === this.totalSecond) {// 開啟倒計時this.timer = setInterval(() => {// console.log('正在倒計時……')this.second--if (this.second <= 0) {clearInterval(this.timer) // 清空計時器this.timer = null // 重置定時器idthis.second = this.totalSecond // 歸位}}, 1000)}}},destroyed () {// 離開頁面清除定時器clearInterval(this.timer)}
}
</script><style lang="less" scoped></style>

2. 倒計時之前的校驗處理（手機號、驗證碼）

src/views/login/index.vue

  methods: {// 校驗手機號 、驗證碼是否合法// 通過校驗，返回true； 不通過校驗，返回falsevalidFn () {// 手機號if (!/^1[3-9]\d{9}$/.test(this.mobile)) {this.$toast('請輸入正確的手機號！')return false}// 驗證碼if (!/^\w{4}$/.test(this.picCode)) {this.$toast('請輸入正確的驗證碼')return false}return true},// 獲取短信驗證碼，getCode () {if (!this.validFn()) {// 如果沒通過校驗，直接返回return}// 當目前沒有定時器開著，且 totalSecond 和 second一致（秒數歸位）才可以倒計時if (!this.timer && this.second === this.totalSecond) {// 開啟倒計時this.timer = setInterval(() => {// console.log('正在倒計時……')this.second--if (this.second <= 0) {clearInterval(this.timer) // 清空計時器this.timer = null // 重置定時器idthis.second = this.totalSecond // 歸位}}, 1000)}}},

3. 封裝短信驗證請求接口，發送請求添加提示

src/api/login.js

// 此處用于存放所有登錄相關的接口請求
import request from '@/utils/request'
// 1. 獲取圖形驗證碼
export const getPicCode = () => {return request.get('/captcha/image')
}
// 2. 獲取短信驗證碼
export const getMsgCode = (captchaCode, captchaKey, mobile) => {return request.post('/captcha/sendSmsCaptcha', {form: {captchaCode,captchaKey,mobile}})
}

src/views/login/index.vue

    // 獲取短信驗證碼，async getCode () {if (!this.validFn()) {// 如果沒通過校驗，直接返回return}// 當目前沒有定時器開著，且 totalSecond 和 second一致（秒數歸位）才可以倒計時if (!this.timer && this.second === this.totalSecond) {// 發送請求await getMsgCode(this.picCode, this.picKey, this.mobile)this.$toast('短信發送成功，請注意查收')// 開啟倒計時......}}

16. 登錄功能

目標：封裝api登錄接口，實現登錄功能

步驟分析：

1. 閱讀接口文檔，封裝登錄接口

src/api/login.js

// 3. 登錄接口
export const codeLogin = (mobile, smsCode) => {return request.post('/passport/login', {form: {isParty: false,partyData: {},mobile,smsCode}})
}

2. 登錄前的校驗（手機號，圖形驗證碼，短信驗證碼）

3. 調用方法，發送請求，成功添加提示并跳轉

src/views/login/index.vue

    // 登錄async login () {if (!this.validFn()) {return}if (!/^\d{6}$/.test(this.msgCode)) {this.$toast('請輸入正確的手機驗證碼')return}const res = await codeLogin(this.mobile, this.msgCode)console.log(res)this.$toast('登錄成功')this.$router.push('/')}

17. 響應攔截器統一處理錯誤提示

目標：通過響應攔截器，統一處理接口的錯誤提示

問題：每次請求，都會有可能會錯誤，就都需要錯誤提示

說明：響應攔截器是咱們拿到數據的第一個數據流轉站，可以再里面統一處理錯誤。

src/utils/request.js

import axios from 'axios'
import { Toast } from 'vant'
// 創建axios實例，將來對創建出來的實例，進行自定義配置
// 好處：不會污染原始的axios實例
const instance = axios.create({baseURL: 'http://smart-shop.itheima.net/index.php?s=/api/',timeout: 5000
})// 自定義配置 - 請求/響應 攔截器
// 添加請求攔截器
instance.interceptors.request.use(function (config) {// 在發送請求之前做些什么return config
}, function (error) {// 對請求錯誤做些什么return Promise.reject(error)
})// 添加響應攔截器
instance.interceptors.response.use(function (response) {// 2xx 范圍內的狀態碼都會觸發該函數。// 對響應數據做點什么(默認axios會多包裝一層data，需要響應攔截器中處理一下)const res = response.dataconsole.log(res)if (res.status !== 200) {// 給提示Toast(res.message)// 拋出一個錯誤的promisereturn Promise.reject(res.message)}return res
}, function (error) {// 超出 2xx 范圍的狀態碼都會觸發該函數。// 對響應錯誤做點什么return Promise.reject(error)
})// 導出配置好的實例
export default instance

如果出現了下面的錯誤，可以在src/utils/request.js中添加請求頭

const instance = axios.create({baseURL: 'http://smart-shop.itheima.net/index.php?s=/api/',timeout: 5000,headers: {platform: 'H5'}
})

18. 登錄權證信息存儲

目標：vuex構建user模塊存儲登錄權證（token & userId）

補充說明：

1. token存入vuex的好處，易獲取，響應式

2. vuex需要分模塊 => user模塊

1. 構建user模塊

src/store/modules/user.js


export default {namespaced: true,state () {return {// 個人權證相關userInfo: {token: '',userId: ''}}},mutations: {},actions: {},getters: {}
}

2. 掛載到vuex

src/store/index.js

import Vue from 'vue'
import Vuex from 'vuex'
import user from './modules/user'Vue.use(Vuex)export default new Vuex.Store({state: {},getters: {},mutations: {},actions: {},modules: {    user}
})

3. 提供mutations

src/store/modules/user.js

  mutations: {// 所有mutations的第一個參數都是statesetUserInfo (state, obj) {state.userInfo = obj}},

4. 頁面中commit調用

src/views/login/index.vue

    // 登錄async login () {if (!this.validFn()) {return}if (!/^\d{6}$/.test(this.msgCode)) {this.$toast('請輸入正確的手機驗證碼')return}const res = await codeLogin(this.mobile, this.msgCode)this.$store.commit('user/setUserInfo', res.data)console.log(res)this.$toast('登錄成功')this.$router.push('/')}

19. storage存儲模塊 - vuex持久化處理

目標：封裝storage存儲模塊，利用本地存儲，進行vuex持久化處理

問題1：vuex刷新會丟失，怎么辦？

// 將token存入本地
localStorage.setItem('hm_shopping_info', JSON.stringify(xxx))

src/utils/storage.js

// 約定一個通用的鍵名
const INFO_KEY = 'hm_shopping_info'// 獲取個人信息
export const getInfo = () => {const defaultObj = { token: '', userId: '' }const res = localStorage.getItem(INFO_KEY)return res ? JSON.parse(res) : defaultObj
}// 設置個人信息
export const setInfo = (obj) => {localStorage.setItem(INFO_KEY, JSON.stringify(obj))
}// 移除個人信息
export const removeInfo = () => {localStorage.removeItem(INFO_KEY)
}

src/store/modules/user.js

import { getInfo, setInfo } from '@/utils/storage'export default {namespaced: true,state () {return {// 個人權證相關userInfo: getInfo()}},mutations: {// 所有mutations的第一個參數都是statesetUserInfo (state, obj) {state.userInfo = objsetInfo(obj)}},actions: {},getters: {}
}

20. 添加請求loading效果

目標：統一在每次請求后臺時，添加loading效果

背景：有時候因為網絡原因，一次請求的結果可能需要一段時間后才能回來，此時，需要給用戶添加loading提示。

添加loading提示的好處：

1. 節流處理：防止用戶在一次請求還沒回來之前，多次進行點擊，發送無效請求

2. 友好提示：告知用戶，目前是在加載中，請耐心等待，用戶體驗會更好

實現步驟：

1. 請求攔截器中，每次請求，打開loading

2. 響應攔截器中，每次響應，關閉loading

src/utils/request.js

import axios from 'axios'
import { Toast } from 'vant'
// 創建axios實例，將來對創建出來的實例，進行自定義配置
// 好處：不會污染原始的axios實例
const instance = axios.create({baseURL: 'http://smart-shop.itheima.net/index.php?s=/api/',timeout: 5000,headers: {platform: 'H5'}
})// 自定義配置 - 請求/響應 攔截器
// 添加請求攔截器
instance.interceptors.request.use(function (config) {// 在發送請求之前做些什么// 開啟loading，禁止背景點擊（節流處理，防止多次無效觸發）Toast.loading({message: '加載中...',forbidClick: true,loadingType: 'spinner', // 配置loading圖標duration: 0 // 不會自動消失})return config
}, function (error) {// 對請求錯誤做些什么return Promise.reject(error)
})// 添加響應攔截器
instance.interceptors.response.use(function (response) {// 2xx 范圍內的狀態碼都會觸發該函數。// 對響應數據做點什么(默認axios會多包裝一層data，需要響應攔截器中處理一下)const res = response.dataif (res.status !== 200) {// 給錯誤提示，Toast默認是單例模式，后面的Toast調用了，會將前一個Toast效果覆蓋，同時只能存在一個ToastToast(res.message)// 拋出一個錯誤的promisereturn Promise.reject(res.message)} else {// 正確情況，直接走業務核心邏輯，清除loading效果Toast.clear()}return res
}, function (error) {// 超出 2xx 范圍的狀態碼都會觸發該函數。// 對響應錯誤做點什么return Promise.reject(error)
})// 導出配置好的實例
export default instance

21. 頁面訪問攔截

目標：基于全局前置防衛，進行頁面訪問攔截處理

說明：智慧商城項目，大部分頁面，游客都可以直接訪問，如遇到需要登錄才能進行的操作，提示并跳轉到登錄。但是，對于支付頁，訂單頁等，必須是登錄的用戶才能訪問的，游客不能進入該頁面，需要左攔截處理。

路由導航守衛- 全局前置守衛

1. 所有的路由一旦倍匹配到，都會先經過全局前置守衛

2. 只有全局前置守衛放行，才會真正解析渲染組件，才能看到頁面內容

訪問權限頁面時，攔截或放行的關鍵點？-> 用戶是否有登錄權證token

router.beforeEach((to, from, next) => {// 1. to 往哪里去，到哪去的路由信息對象// 2. from 從哪里來，從哪里來的路由信息對象// 3. next() 是否放行//     如果next()調用，就是放行//     next(路徑) 攔截到某個路徑頁面
})

1. src/store/index.js

import Vue from 'vue'
import Vuex from 'vuex'
import user from './modules/user'Vue.use(Vuex)export default new Vuex.Store({state: {},getters: {token (state) {return state.user.userInfo.token}},mutations: {},actions: {},modules: {user}
})

2. src/router/index.js

import store from '@/store'// 所有路由在真正被訪問到之前（解析渲染對應的組件頁面前），都會先經過全局前置守衛
// 只有全局前置守衛放行了，才會到達對應的頁面// 全局前置導航守衛
// 1. to 往哪里去，到哪去的路由信息對象（路徑，參數）
// 2. from 從哪里來，從哪里來的路由信息對象（路徑，參數）
// 3. next() 是否放行
//     如果next()調用，就是放行到to要去的路徑
//     next(路徑) 攔截到某個路徑頁面// 定義一個數組，專門存放所有需要權限訪問的頁面
const authUrls = ['/pay', '/myorder']router.beforeEach((to, from, next) => {// 看 to.path是否在authUrls中出現過if (!authUrls.includes(to.path)) {// 非權限頁面，直接放行next()} else {// 權限頁面，需要判定tokenconst token = store.getters.token// console.log(token)if (token) {next()} else {next('/login')}}
})

22. 首頁 - 靜態結構準備 & 動態渲染

目標：實現首頁靜態結構，封裝接口，完成首頁動態渲染

1. src/utils/vant-ui.js

// 按需導入
import Vue from 'vue'
import { Button, Switch, Rate, Tabbar, TabbarItem, NavBar, Toast, Search, Swipe, SwipeItem, Grid, GridItem } from 'vant'Vue.use(Grid)
Vue.use(GridItem)
Vue.use(Swipe)
Vue.use(SwipeItem)
Vue.use(Search)
Vue.use(Toast)
Vue.use(NavBar)
Vue.use(Tabbar)
Vue.use(TabbarItem)
Vue.use(Button)
Vue.use(Switch)
Vue.use(Rate)

2. src/views/layout/home.vue

<template><div class="home"><!-- 導航條 --><van-nav-bar title="智慧商城" fixed /><!-- 搜索框 --><van-searchreadonlyshape="round"background="#f1f1f2"placeholder="請在此輸入搜索關鍵詞"@click="$router.push('/search')"/><!-- 輪播圖 --><van-swipe class="my-swipe" :autoplay="3000" indicator-color="white"><van-swipe-item v-for="item in bannerList" :key="item.imgUrl"><img :src="item.imgUrl" alt=""></van-swipe-item></van-swipe><!-- 導航 --><van-grid column-num="5" icon-size="40"><van-grid-itemv-for="item in navList" :key="item.imgUrl":icon="item.imgUrl"text="新品首發"@click="$router.push('/category')"/></van-grid><!-- 主會場 --><div class="main"><img src="@/assets/main.png" alt=""></div><!-- 猜你喜歡 --><div class="guess"><p class="guess-title">—— 猜你喜歡 ——</p><div class="goods-list"><GoodsItem v-for="item in proList" :key="item.goods_id" :item="item"></GoodsItem></div></div></div>
</template><script>
import GoodsItem from '@/components/GoodsItem.vue'
import { getHomeData } from '@/api/home'
export default {name: 'HomePage',components: {GoodsItem},data () {return {bannerList: [], // 輪播navList: [], // 導航proList: [] // 商品}},async created () {const { data: { pageData } } = await getHomeData()this.bannerList = pageData.items[1].datathis.navList = pageData.items[3].datathis.proList = pageData.items[6].dataconsole.log(this.proList)}
}</script><style lang="less" scoped>
// 主題 padding
.home {padding-top: 100px;padding-bottom: 50px;
}// 導航條樣式定制
.van-nav-bar {z-index: 999;background-color: #c21401;::v-deep .van-nav-bar__title {color: #fff;}
}// 搜索框樣式定制
.van-search {position: fixed;width: 100%;top: 46px;z-index: 999;
}// 分類導航部分
.my-swipe .van-swipe-item {height: 185px;color: #fff;font-size: 20px;text-align: center;background-color: #39a9ed;
}
.my-swipe .van-swipe-item img {width: 100%;height: 185px;
}// 主會場
.main img {display: block;width: 100%;
}// 猜你喜歡
.guess .guess-title {height: 40px;line-height: 40px;text-align: center;
}// 商品樣式
.goods-list {background-color: #f6f6f6;
}
</style>

3. src/components/GoodsItem.vue

<template><div v-if="item.goods_id" class="goods-item" @click="$router.push(`/prodetail/${item.goods_id}`)"><div class="left"><img :src="item.goods_image" alt="" /></div><div class="right"><p class="tit text-ellipsis-2">{{ item.goods_name }}</p><p class="count">已售 {{ item.goods_sales }} 件</p><p class="price"><span class="new">￥{{ item.goods_price_min }}</span><span class="old">￥{{ item.goods_price_max }}</span></p></div></div>
</template><script>
export default {name: 'GoodsItem',props: {item: {type: Object,default: () => {return {}}}}
}
</script><style lang="less" scoped>
.goods-item {height: 148px;margin-bottom: 6px;padding: 10px;background-color: #fff;display: flex;.left {width: 127px;img {display: block;width: 100%;}}.right {flex: 1;font-size: 14px;line-height: 1.3;padding: 10px;display: flex;flex-direction: column;justify-content: space-evenly;.count {color: #999;font-size: 12px;}.price {color: #999;font-size: 16px;.new {color: #f03c3c;margin-right: 10px;}.old {text-decoration: line-through;font-size: 12px;}}}
}
</style>

4. src/api/home.js

import request from '@/utils/request'// 獲取首頁數據
export const getHomeData = () => {return request.get('/page/detail', {params: {pageId: 0}})
}

效果：

23. 搜索 - 歷史記錄管理

目標：構建搜索頁的靜態布局，完成歷史記錄的管理

需求：

1. 搜索歷史基本渲染

2. 點擊搜索（添加歷史）

? ?點擊搜索按鈕或底下歷史記錄，都能進行搜索

①若之前沒有相同搜索關鍵字，則直接追加到最前面
②若之前已有相同搜索關鍵字，將該原有關鍵字移除，再追加

3. 清空歷史：添加清空圖標，可以清空歷史記錄

4. 持久化：搜索歷史需要持久化，刷新歷史不丟失

代碼：

src/views/search/index.vue

<template><div class="search"><van-nav-bar title="商品搜索" left-arrow @click-left="$router.go(-1)" /><van-search v-model="search" show-action placeholder="請輸入搜索關鍵詞" clearable><template #action><div @click="goSearch(search)">搜索</div></template></van-search><!-- 搜索歷史 --><div class="search-history" v-if="history.length > 0"><div class="title"><span>最近搜索</span><van-icon @click="clear" name="delete-o" size="16" /></div><div class="list"><div v-for="item in history" :key="item" class="list-item" @click="goSearch(item)">{{ item }}</div></div></div></div>
</template><script>
import { getHistoryList, setHistoryList } from '@/utils/storage'
export default {name: 'SearchIndex',data () {return {search: '', // 輸入框的內容history: getHistoryList() // 歷史記錄}},methods: {goSearch (key) {// console.log('進行了搜索，搜索歷史要更新', key)const index = this.history.indexOf(key)if (index !== -1) {// 存在相同的項，將原有關鍵字移除// splice(從哪開始, 刪除幾個, 項1, 項2)this.history.splice(index, 1)}this.history.unshift(key)setHistoryList(this.history)// 跳轉到搜索列表頁this.$router.push(`/searchlist?search=${key}`)},clear () {this.history = []setHistoryList([])}}
}
</script><style lang="less" scoped>
.search {.searchBtn {background-color: #fa2209;color: #fff;}::v-deep .van-search__action {background-color: #c21401;color: #fff;padding: 0 20px;border-radius: 0 5px 5px 0;margin-right: 10px;}::v-deep .van-icon-arrow-left {color: #333;}.title {height: 40px;line-height: 40px;font-size: 14px;display: flex;justify-content: space-between;align-items: center;padding: 0 15px;}.list {display: flex;justify-content: flex-start;flex-wrap: wrap;padding: 0 10px;gap: 5%;}.list-item {width: 30%;text-align: center;padding: 7px;line-height: 15px;border-radius: 50px;background: #fff;font-size: 13px;border: 1px solid #efefef;overflow: hidden;white-space: nowrap;text-overflow: ellipsis;margin-bottom: 10px;}
}
</style>

src/utils/storage.js

// 約定一個通用的鍵名
const INFO_KEY = 'hm_shopping_info'
const HISTORY_KEY = 'hm_history_list'// 獲取搜索歷史
export const getHistoryList = () => {const res = localStorage.getItem(HISTORY_KEY)return res ? JSON.parse(res) : []
}
// 設置搜索歷史
export const setHistoryList = (arr) => {localStorage.setItem(HISTORY_KEY, JSON.stringify(arr))
}

效果：

24. 搜索列表 - 靜態布局 & 動態渲染

目標：實現搜索列表頁靜態結構，封裝接口，完成搜索列表頁的渲染

（1）搜索關鍵字搜索

1. src/views/search/list.vue

<template><div class="search"><van-nav-bar fixed title="商品列表" left-arrow @click-left="$router.go(-1)" /><van-searchreadonlyshape="round"background="#ffffff":value="querySearch || '搜索商品'"show-action@click="$router.push('/search')"><template #action><van-icon class="tool" name="apps-o" /></template></van-search><!-- 排序選項按鈕 --><div class="sort-btns"><div class="sort-item">綜合</div><div class="sort-item">銷量</div><div class="sort-item">價格 </div></div><div class="goods-list"><GoodsItem v-for="item in proList" :key="item.goods_id" :item="item"></GoodsItem></div></div>
</template><script>
import GoodsItem from '@/components/GoodsItem.vue'
import { getProList } from '@/api/product'
export default {name: 'SearchIndex',components: {GoodsItem},computed: {// 獲取地址欄的搜索關鍵字querySearch () {return this.$route.query.search}},data () {return {page: 1,proList: []}},async created () {const { data: { list } } = await getProList({categoryId: this.$route.query.categoryId,goodsName: this.querySearch,page: this.page})this.proList = list.data}
}
</script><style lang="less" scoped>
.search {padding-top: 46px;::v-deep .van-icon-arrow-left {color: #333;}.tool {font-size: 24px;height: 40px;line-height: 40px;}.sort-btns {display: flex;height: 36px;line-height: 36px;.sort-item {text-align: center;flex: 1;font-size: 16px;}}
}// 商品樣式
.goods-list {background-color: #f6f6f6;
}
</style>

2. src/api/product.js

import request from '@/utils/request'// 獲取搜索商品列表的數據
export const getProList = (obj) => {const { categoryId, goodsName, page } = objreturn request.get('/goods/list', {params: {categoryId,goodsName,page}})
}// 獲取商品詳情數據
export const getProDetail = (goodsId) => {return request.get('/goods/detail', {params: {goodsId}})
}// 獲取商品評價
export const getProComments = (goodsId, limit) => {return request.get('/comment/listRows', {params: {goodsId,limit}})
}

效果：

（2）分類id搜索

1. src/api/category.js

import request from '@/utils/request'// 獲取分類數據
export const getCategoryData = () => {return request.get('/category/list')
}

2. src/views/layout/category.vue

<template><div class="category"><!-- 分類 --><van-nav-bar title="全部分類" fixed /><!-- 搜索框 --><van-searchreadonlyshape="round"background="#f1f1f2"placeholder="請輸入搜索關鍵詞"@click="$router.push('/search')"/><!-- 分類列表 --><div class="list-box"><div class="left"><ul><li v-for="(item, index) in list" :key="item.category_id"><a :class="{ active: index === activeIndex }" @click="activeIndex = index" href="javascript:;">{{ item.name }}</a></li></ul></div><div class="right"><div @click="$router.push(`/searchlist?categoryId=${item.category_id}`)" v-for="item in list[activeIndex]?.children" :key="item.category_id" class="cate-goods"><img :src="item.image?.external_url" alt=""><p>{{ item.name }}</p></div></div></div></div>
</template><script>
import { getCategoryData } from '@/api/category'
export default {name: 'CategoryPage',created () {this.getCategoryList()},data () {return {list: [],activeIndex: 0}},methods: {async getCategoryList () {const { data: { list } } = await getCategoryData()this.list = list}}
}
</script><style lang="less" scoped>
// 主題 padding
.category {padding-top: 100px;padding-bottom: 50px;height: 100vh;.list-box {height: 100%;display: flex;.left {width: 85px;height: 100%;background-color: #f3f3f3;overflow: auto;a {display: block;height: 45px;line-height: 45px;text-align: center;color: #444444;font-size: 12px;&.active {color: #fb442f;background-color: #fff;}}}.right {flex: 1;height: 100%;background-color: #ffffff;display: flex;flex-wrap: wrap;justify-content: flex-start;align-content: flex-start;padding: 10px 0;overflow: auto;.cate-goods {width: 33.3%;margin-bottom: 10px;img {width: 70px;height: 70px;display: block;margin: 5px auto;}p {text-align: center;font-size: 12px;}}}}
}// 導航條樣式定制
.van-nav-bar {z-index: 999;
}// 搜索框樣式定制
.van-search {position: fixed;width: 100%;top: 46px;z-index: 999;
}
</style>

效果：

25. 商品詳情 - 靜態布局 & 渲染

目標：實現商品詳情靜態結構，封裝接口，完成商品詳情頁渲染

1. src/views/prodetail/index.vue

見27

2. src/api/product.js

// 獲取商品詳情數據
export const getProDetail = (goodsId) => {return request.get('/goods/detail', {params: {goodsId}})
}// 獲取商品評價
export const getProComments = (goodsId, limit) => {return request.get('/comment/listRows', {params: {goodsId,limit}})
}

3. src/utils/vant-ui.js

import { ActionSheet } from 'vant';Vue.use(ActionSheet);

26. 加入購物車 - 喚起彈層

目標：點擊加入購物車，喚起彈層效果

27. 加入購物車 - 封裝數字框組件

目標：封裝彈層中的數字框組件

分析：組件名CountBox

1. 靜態結構，左中右三部分

2. 數字框的數字，應該是外部傳遞進來的（父傳子）

3. 點擊 + - 號，可以修改數字（子傳父）

4. 使用v-model實現封裝（:value和@input的簡寫）

5. 數字不能減到小于1

①src/components/CountBox.vue

<template><div class="count-box"><button @click="handleSub" class="minus">-</button><input :value="value" class="inp" type="text"><button @click="handleAdd" class="add">+</button></div>
</template><script>
export default {// 父傳子props: {value: {type: Number,default: 1}},methods: {// 子傳父handleSub () {if (this.value <= 1) {return}this.$emit('input', this.value - 1)},handleAdd () {this.$emit('input', this.value + 1)}}
}
</script><style lang="less" scoped>
.count-box {width:110px;display: flex;.add, .minus {width: 30px;height: 30px;outline: none;border: none;background-color: #efefef;}.inp {width: 40px;height: 30px;outline: none;border: none;margin: 0 5px;background-color: #efefef;text-align: center;}
}
</style>

②src/views/prodetail/index.vue

<template><div class="prodetail"><van-nav-bar fixed title="商品詳情頁" left-arrow @click-left="$router.go(-1)" /><van-swipe :autoplay="4000" @change="onChange"><van-swipe-item v-for="(image, index) in images" :key="index"><img :src="image.external_url" /></van-swipe-item><template #indicator><div class="custom-indicator">{{ current + 1 }} / {{ images.length }}</div></template></van-swipe><!-- 商品說明 --><div class="info"><div class="title"><div class="price"><span class="now">￥{{ detail.goods_price_min }}</span><span class="oldprice">￥{{ detail.goods_price_max }}</span></div><div class="sellcount">已售 {{ detail.goods_sales }} 件</div></div><div class="msg text-ellipsis-2">{{ detail.goods_name }}</div><div class="service"><div class="left-words"><span><van-icon name="passed" />七天無理由退貨</span><span><van-icon name="passed" />48小時發貨</span></div><div class="right-icon"><van-icon name="arrow" /></div></div></div><!-- 商品評價 --><div class="comment"><div class="comment-title"><div class="left">商品評價 ({{ total }}條)</div><div class="right">查看更多 <van-icon name="arrow" /> </div></div><div class="comment-list"><div class="comment-item" v-for="item in commentList" :key="item.comment_id"><div class="top"><img :src="item.user.avatar_url || defaultImg" alt=""><div class="name">{{ item.user.nick_name }}</div><van-rate :size="16" :value="item.score / 2" color="#ffd21e" void-icon="star" void-color="#eee"/></div><div class="content">{{ item.content }}</div><div class="time">{{ item.create_time }}</div></div></div></div><!-- 商品描述 --><div class="desc" v-html="detail.content"></div><!-- 底部 --><div class="footer"><div @click="$router.push('/')" class="icon-home"><van-icon name="wap-home-o" /><span>首頁</span></div><div @click="$router.push('/cart')" class="icon-cart"><span v-if="cartTotal > 0" class="num">{{ cartTotal }}</span><van-icon name="shopping-cart-o" /><span>購物車</span></div><div @click="addFn" class="btn-add">加入購物車</div><div @click="buyNow" class="btn-buy">立刻購買</div></div><!-- 加入購物車/立即購買 公用的彈層 --><van-action-sheet v-model="showPannel" :title="mode === 'cart' ? '加入購物車' : '立刻購買'"><div class="product"><div class="product-title"><div class="left"><img :src="detail.goods_image" alt=""></div><div class="right"><div class="price"><span>￥</span><span class="nowprice">{{ detail.goods_price_min }}</span></div><div class="count"><span>庫存</span><span>{{ detail.stock_total }}</span></div></div></div><div class="num-box"><span>數量</span><!-- v-model 本質上 :value 和 @input 的簡寫 --><CountBox v-model="addCount"></CountBox></div><!-- 有庫存才顯示提交按鈕 --><div class="showbtn" v-if="detail.stock_total > 0"><div class="btn" v-if="mode === 'cart'">加入購物車</div><div class="btn now" v-else @click="goBuyNow">立刻購買</div></div><div class="btn-none" v-else>該商品已搶完</div></div></van-action-sheet></div>
</template><script>
import { getProComments, getProDetail } from '@/api/product'
import defaultImg from '@/assets/default-avatar.png'
import CountBox from '@/components/CountBox.vue'export default {name: 'ProDetail',// mixins: [loginConfirm],components: {CountBox},data () {return {images: [],current: 0,detail: {},total: 0, // 評價總數commentList: [], // 評價列表defaultImg,showPannel: false, // 控制彈層的顯示隱藏mode: 'cart', // 標記彈層狀態addCount: 1, // 數字框綁定的數據cartTotal: 0 // 購物車角標}},computed: {goodsId () {return this.$route.params.id}},created () {this.getDetail()this.getComments()},methods: {onChange (index) {this.current = index},async getDetail () {const { data: { detail } } = await getProDetail(this.goodsId)this.detail = detailthis.images = detail.goods_imagesconsole.log(this.images)},async getComments () {const { data: { list, total } } = await getProComments(this.goodsId, 3)this.commentList = listthis.total = total},addFn () {this.mode = 'cart'this.showPannel = true},buyNow () {this.mode = 'buyNow'this.showPannel = true},goBuyNow () {if (this.loginConfirm()) {return}this.$router.push({path: '/pay',query: {mode: 'buyNow',goodsId: this.goodsId,goodsSkuId: this.detail.skuList[0].goods_sku_id,goodsNum: this.addCount}})}}
}
</script><style lang="less" scoped>
.prodetail {padding-top: 46px;::v-deep .van-icon-arrow-left {color: #333;}img {display: block;width: 100%;}.custom-indicator {position: absolute;right: 10px;bottom: 10px;padding: 5px 10px;font-size: 12px;background: rgba(0, 0, 0, 0.1);border-radius: 15px;}.desc {width: 100%;overflow: scroll;::v-deep img {display: block;width: 100%!important;}}.info {padding: 10px;}.title {display: flex;justify-content: space-between;.now {color: #fa2209;font-size: 20px;}.oldprice {color: #959595;font-size: 16px;text-decoration: line-through;margin-left: 5px;}.sellcount {color: #959595;font-size: 16px;position: relative;top: 4px;}}.msg {font-size: 16px;line-height: 24px;margin-top: 5px;}.service {display: flex;justify-content: space-between;line-height: 40px;margin-top: 10px;font-size: 16px;background-color: #fafafa;.left-words {span {margin-right: 10px;}.van-icon {margin-right: 4px;color: #fa2209;}}}.comment {padding: 10px;}.comment-title {display: flex;justify-content: space-between;.right {color: #959595;}}.comment-item {font-size: 16px;line-height: 30px;.top {height: 30px;display: flex;align-items: center;margin-top: 20px;img {width: 20px;height: 20px;}.name {margin: 0 10px;}}.time {color: #999;}}.footer {position: fixed;left: 0;bottom: 0;width: 100%;height: 55px;background-color: #fff;border-top: 1px solid #ccc;display: flex;justify-content: space-evenly;align-items: center;.icon-home, .icon-cart {display: flex;flex-direction: column;align-items: center;justify-content: center;font-size: 14px;.van-icon {font-size: 24px;}}.btn-add,.btn-buy {height: 36px;line-height: 36px;width: 120px;border-radius: 18px;background-color: #ffa900;text-align: center;color: #fff;font-size: 14px;}.btn-buy {background-color: #fe5630;}}
}.tips {padding: 10px;
}// 彈層的樣式
.product {.product-title {display: flex;.left {img {width: 90px;height: 90px;}margin: 10px;}.right {flex: 1;padding: 10px;.price {font-size: 14px;color: #fe560a;.nowprice {font-size: 24px;margin: 0 5px;}}}}.num-box {display: flex;justify-content: space-between;padding: 10px;align-items: center;}.btn, .btn-none {height: 40px;line-height: 40px;margin: 20px;border-radius: 20px;text-align: center;color: rgb(255, 255, 255);background-color: rgb(255, 148, 2);}.btn.now {background-color: #fe5630;}.btn-none {background-color: #cccccc;}
}.footer .icon-cart {position: relative;padding: 0 6px;.num {z-index: 999;position: absolute;top: -2px;right: 0;min-width: 16px;padding: 0 4px;color: #fff;text-align: center;background-color: #ee0a24;border-radius: 50%;}
}
</style>

效果：

28. 加入購物車 - 判斷token添加登錄提示

目標：給未登錄的用戶，添加登錄提示

說明：加入購物車，是一個登錄后的用戶才能進行的操作，所以需要進行鑒權判斷，判斷用戶token是否存在。

1.? 若存在：繼續加入購物車操作

2. 不存在：提示用戶未登錄，引導到登錄頁，登錄完回跳

29. 加入購物車 - 封裝接口進行請求

目標：封裝接口，進行加入購物車的請求

1. api/cart.js中封裝接口

2. 頁面中調用接口

3. 遇到問題：接口需要傳遞token

4. 解決問題：請求攔截器中統一攜帶token

5. 小圖標定制

①src/utils/vant-ui.js

import { Dialog } from 'vant';// 全局注冊
Vue.use(Dialog);

②src/views/login/index.vue

    // 登錄async login () {if (!this.validFn()) {return}if (!/^\d{6}$/.test(this.msgCode)) {this.$toast('請輸入正確的手機驗證碼')return}console.log('發送登錄請求')const res = await codeLogin(this.mobile, this.msgCode)this.$store.commit('user/setUserInfo', res.data)this.$toast('登錄成功')// 進行判斷，看地址欄有無回跳地址// 1. 如果有，說明是其他頁面，攔截到登錄來的，需要回跳// 2. 如果沒有，正常去首頁const url = this.$route.query.backUrl || '/'this.$router.replace(url)}

③src/api/cart.js

import request from '@/utils/request'// 加入購物車
// goodsId    => 商品id     iphone8
// goodsSkuId => 商品規格id  紅色的iphone8  粉色的iphone8
export const addCart = (goodsId, goodsNum, goodsSkuId) => {return request.post('/cart/add', {goodsId,goodsNum,goodsSkuId})
}

④src/mixins/loginConfirm.js

export default {// 此處編寫的就是 Vue組件實例的 配置項，通過一定語法，可以直接混入到組件內部// data methods computed 生命周期函數 ...// 注意點：// 1. 如果此處 和 組件內，提供了同名的 data 或 methods， 則組件內優先級更高// 2. 如果編寫了生命周期函數，則mixins中的生命周期函數 和 頁面的生命周期函數，//    會用數組管理，統一執行created () {// console.log('嘎嘎')},data () {return {title: '標題'}},methods: {sayHi () {// console.log('你好')},// 根據登錄狀態，判斷是否需要顯示登錄確認框// 1. 如果未登錄 => 顯示確認框 返回 true// 2. 如果已登錄 => 啥也不干   返回 falseloginConfirm () {// 判斷 token 是否存在if (!this.$store.getters.token) {// 彈確認框this.$dialog.confirm({title: '溫馨提示',message: '此時需要先登錄才能繼續操作哦',confirmButtonText: '去登陸',cancelButtonText: '再逛逛'}).then(() => {// 如果希望，跳轉到登錄 => 登錄后能回跳回來，需要在跳轉去攜帶參數（當前的路徑地址）this.$router.replace({path: '/login',query: {// this.$route.fullPath(會包含查詢參數)backUrl: this.$route.fullPath}})}).catch(() => {})return true}return false}}
}

⑤src/views/prodetail/index.vue

<template><div class="prodetail"><van-nav-bar fixed title="商品詳情頁" left-arrow @click-left="$router.go(-1)" /><van-swipe :autoplay="4000" @change="onChange"><van-swipe-item v-for="(image, index) in images" :key="index"><img :src="image.external_url" /></van-swipe-item><template #indicator><div class="custom-indicator">{{ current + 1 }} / {{ images.length }}</div></template></van-swipe><!-- 商品說明 --><div class="info"><div class="title"><div class="price"><span class="now">￥{{ detail.goods_price_min }}</span><span class="oldprice">￥{{ detail.goods_price_max }}</span></div><div class="sellcount">已售 {{ detail.goods_sales }} 件</div></div><div class="msg text-ellipsis-2">{{ detail.goods_name }}</div><div class="service"><div class="left-words"><span><van-icon name="passed" />七天無理由退貨</span><span><van-icon name="passed" />48小時發貨</span></div><div class="right-icon"><van-icon name="arrow" /></div></div></div><!-- 商品評價 --><div class="comment"><div class="comment-title"><div class="left">商品評價 ({{ total }}條)</div><div class="right">查看更多 <van-icon name="arrow" /> </div></div><div class="comment-list"><div class="comment-item" v-for="item in commentList" :key="item.comment_id"><div class="top"><img :src="item.user.avatar_url || defaultImg" alt=""><div class="name">{{ item.user.nick_name }}</div><van-rate :size="16" :value="item.score / 2" color="#ffd21e" void-icon="star" void-color="#eee"/></div><div class="content">{{ item.content }}</div><div class="time">{{ item.create_time }}</div></div></div></div><!-- 商品描述 --><div class="desc" v-html="detail.content"></div><!-- 底部 --><div class="footer"><div @click="$router.push('/')" class="icon-home"><van-icon name="wap-home-o" /><span>首頁</span></div><div @click="$router.push('/cart')" class="icon-cart"><span v-if="cartTotal > 0" class="num">{{ cartTotal }}</span><van-icon name="shopping-cart-o" /><span>購物車</span></div><div @click="addFn" class="btn-add">加入購物車</div><div @click="buyNow" class="btn-buy">立刻購買</div></div><!-- 加入購物車/立即購買 公用的彈層 --><van-action-sheet v-model="showPannel" :title="mode === 'cart' ? '加入購物車' : '立刻購買'"><div class="product"><div class="product-title"><div class="left"><img :src="detail.goods_image" alt=""></div><div class="right"><div class="price"><span>￥</span><span class="nowprice">{{ detail.goods_price_min }}</span></div><div class="count"><span>庫存</span><span>{{ detail.stock_total }}</span></div></div></div><div class="num-box"><span>數量</span><!-- v-model 本質上 :value 和 @input 的簡寫 --><CountBox v-model="addCount"></CountBox></div><!-- 有庫存才顯示提交按鈕 --><div class="showbtn" v-if="detail.stock_total > 0"><div class="btn" v-if="mode === 'cart'" @click="addCart">加入購物車</div><div class="btn now" v-else @click="goBuyNow">立刻購買</div></div><div class="btn-none" v-else>該商品已搶完</div></div></van-action-sheet></div>
</template><script>
import { getProComments, getProDetail } from '@/api/product'
import defaultImg from '@/assets/default-avatar.png'
import CountBox from '@/components/CountBox.vue'
import { addCart } from '@/api/cart'
import loginConfirm from '@/mixins/loginConfirm'export default {name: 'ProDetail',mixins: [loginConfirm],components: {CountBox},data () {return {images: [],current: 0,detail: {},total: 0, // 評價總數commentList: [], // 評價列表defaultImg,showPannel: false, // 控制彈層的顯示隱藏mode: 'cart', // 標記彈層狀態addCount: 1, // 數字框綁定的數據cartTotal: 0 // 購物車角標}},computed: {goodsId () {return this.$route.params.id}},created () {this.getDetail()this.getComments()},methods: {onChange (index) {this.current = index},async getDetail () {const { data: { detail } } = await getProDetail(this.goodsId)this.detail = detailthis.images = detail.goods_imagesconsole.log(this.images)},async getComments () {const { data: { list, total } } = await getProComments(this.goodsId, 3)this.commentList = listthis.total = total},addFn () {this.mode = 'cart'this.showPannel = true},buyNow () {this.mode = 'buyNow'this.showPannel = true},async addCart () {// 判斷token是否存在// 1. 如果token不存在，彈確認框// 2. 如果token存在，繼續請求操作if (this.loginConfirm()) {return}console.log('正常請求')const { data } = await addCart(this.goodsId, this.addCount, this.detail.skuList[0].goods_sku_id)this.cartTotal = data.cartTotalthis.$toast('加入購物車成功')this.showPannel = false},goBuyNow () {if (this.loginConfirm()) {return}this.$router.push({path: '/pay',query: {mode: 'buyNow',goodsId: this.goodsId,goodsSkuId: this.detail.skuList[0].goods_sku_id,goodsNum: this.addCount}})}}
}
</script><style lang="less" scoped>
.prodetail {padding-top: 46px;::v-deep .van-icon-arrow-left {color: #333;}img {display: block;width: 100%;}.custom-indicator {position: absolute;right: 10px;bottom: 10px;padding: 5px 10px;font-size: 12px;background: rgba(0, 0, 0, 0.1);border-radius: 15px;}.desc {width: 100%;overflow: scroll;::v-deep img {display: block;width: 100%!important;}}.info {padding: 10px;}.title {display: flex;justify-content: space-between;.now {color: #fa2209;font-size: 20px;}.oldprice {color: #959595;font-size: 16px;text-decoration: line-through;margin-left: 5px;}.sellcount {color: #959595;font-size: 16px;position: relative;top: 4px;}}.msg {font-size: 16px;line-height: 24px;margin-top: 5px;}.service {display: flex;justify-content: space-between;line-height: 40px;margin-top: 10px;font-size: 16px;background-color: #fafafa;.left-words {span {margin-right: 10px;}.van-icon {margin-right: 4px;color: #fa2209;}}}.comment {padding: 10px;}.comment-title {display: flex;justify-content: space-between;.right {color: #959595;}}.comment-item {font-size: 16px;line-height: 30px;.top {height: 30px;display: flex;align-items: center;margin-top: 20px;img {width: 20px;height: 20px;}.name {margin: 0 10px;}}.time {color: #999;}}.footer {position: fixed;left: 0;bottom: 0;width: 100%;height: 55px;background-color: #fff;border-top: 1px solid #ccc;display: flex;justify-content: space-evenly;align-items: center;.icon-home, .icon-cart {display: flex;flex-direction: column;align-items: center;justify-content: center;font-size: 14px;.van-icon {font-size: 24px;}}.btn-add,.btn-buy {height: 36px;line-height: 36px;width: 120px;border-radius: 18px;background-color: #ffa900;text-align: center;color: #fff;font-size: 14px;}.btn-buy {background-color: #fe5630;}}
}.tips {padding: 10px;
}// 彈層的樣式
.product {.product-title {display: flex;.left {img {width: 90px;height: 90px;}margin: 10px;}.right {flex: 1;padding: 10px;.price {font-size: 14px;color: #fe560a;.nowprice {font-size: 24px;margin: 0 5px;}}}}.num-box {display: flex;justify-content: space-between;padding: 10px;align-items: center;}.btn, .btn-none {height: 40px;line-height: 40px;margin: 20px;border-radius: 20px;text-align: center;color: rgb(255, 255, 255);background-color: rgb(255, 148, 2);}.btn.now {background-color: #fe5630;}.btn-none {background-color: #cccccc;}
}// 角標
.footer .icon-cart {position: relative;padding: 0 6px;.num {z-index: 999;position: absolute;top: -2px;right: 0;min-width: 16px;padding: 0 4px;color: #fff;text-align: center;background-color: #ee0a24;border-radius: 50%;}
}
</style>

6. src/utils/request.js

import store from '@/store'// 自定義配置 - 請求/響應 攔截器
// 添加請求攔截器
instance.interceptors.request.use(function (config) {// 在發送請求之前做些什么// 開啟loading，禁止背景點擊（節流處理，防止多次無效觸發）Toast.loading({message: '加載中...',forbidClick: true,loadingType: 'spinner', // 配置loading圖標duration: 0 // 不會自動消失})// 只有有token，就在請求時攜帶，便于請求需要授權的接口const token = store.getters.tokenif (token) {config.headers['Access-Token'] = tokenconfig.headers.platform = 'H5'}return config
}, function (error) {// 對請求錯誤做些什么return Promise.reject(error)
})

30. 購物車模塊

說明：購物車數據聯動關系較多，且通常會封裝一些小組件，所以為了便于維護，一般都會將購物車的數據基于vuex分模塊管理

需求分析：

1. 基本靜態結構（快速實現）

2. 構建vuex cart模塊，獲取數據存儲

3. 基于數據動態渲染購物車列表

4. 封裝getters實現動態統計

5. 全選反選功能

6. 數字框修改數量功能

7. 編輯切換狀態，刪除功能

8. 空購物車處理

①src/utils/vant-ui.js

import { Checkbox } from 'vant';Vue.use(Checkbox);

②新建 src/store/modules/cart.js 模塊，封裝action和mutation

import { changeCount, delSelect, getCartList } from '@/api/cart'
import { Toast } from 'vant'export default {namespaced: true,state () {return {cartList: []}},mutations: {// 提供一個設置cartList的mutationsetCartList (state, newList) {state.cartList = newList},toggleCheck (state, goodsId) {// 讓對應的id的項的狀態取反const goods = state.cartList.find(item => item.goods_id === goodsId)goods.isChecked = !goods.isChecked},toggleAllCheck (state, flag) {// 讓所有的小選框同步設置state.cartList.forEach(item => {item.isChecked = flag})},changeCount (state, { goodsId, goodsNum }) {const goods = state.cartList.find(item => item.goods_id === goodsId)goods.goods_num = goodsNum}},actions: {async getCartAction (context) {const { data } = await getCartList()// 后臺返回的數據中，不包含復選框的選中狀態，為了實現將來的功能// 需要手動維護數據，給每一項，添加一個isChecked狀態，標記當前商品是否選中data.list.forEach(item => {item.isChecked = true})context.commit('setCartList', data.list)},async changeCountAction (context, obj) {const { goodsNum, goodsId, goodsSkuId } = obj// 先本地修改context.commit('changeCount', { goodsId, goodsNum })// 再同步到后臺await changeCount(goodsId, goodsNum, goodsSkuId)},// 刪除購物車數據async delSelect (context) {const selCartList = context.getters.selCartListconst cartIds = selCartList.map(item => item.id)await delSelect(cartIds)Toast('刪除成功')// 重新拉取最新的購物車數據（重新渲染）context.dispatch('getCartAction')}},getters: {// 求所有的商品累加總數cartTotal (state) {return state.cartList.reduce((sum, item) => sum + item.goods_num, 0)},// 選中的商品項selCartList (state) {return state.cartList.filter(item => item.isChecked)},// 選中的總數selCount (state, getters) {return getters.selCartList.reduce((sum, item) => sum + item.goods_num, 0)},// 選中的總價selPrice (state, getters) {return getters.selCartList.reduce((sum, item) => sum + item.goods_num * item.goods.goods_price_min, 0).toFixed(2)},// 判斷是否全部選中isAllChecked (state) {return state.cartList.every(item => item.isChecked)}}
}

③掛載到store上面，scr/store/index.js

import Vue from 'vue'
import Vuex from 'vuex'
import user from './modules/user'
import cart from './modules/cart'Vue.use(Vuex)export default new Vuex.Store({state: {},getters: {token (state) {return state.user.userInfo.token}},mutations: {},actions: {},modules: {user,cart}
})

④封裝API接口，src/api/cart.js

// 獲取購物車列表
export const getCartList = () => {return request.get('/cart/list')
}// 更新購物車商品數量
export const changeCount = (goodsId, goodsNum, goodsSkuId) => {return request.post('/cart/update', {goodsId,goodsNum,goodsSkuId})
}// 刪除購物車商品
export const delSelect = (cartIds) => {return request.post('/cart/clear', {cartIds})
}

⑤src/views/layout/cart.vue

<template><div class="cart"><van-nav-bar title="購物車" fixed /><div v-if="isLogin && cartList.length > 0"><!-- 購物車開頭 --><div class="cart-title"><span class="all">共<i>{{ cartTotal }}</i>件商品</span><span class="edit" @click="isEdit = !isEdit"><van-icon name="edit" />編輯</span></div><!-- 購物車列表 --><div class="cart-list"><div class="cart-item" v-for="item in cartList" :key="item.goods_id"><van-checkbox @click="toggleCheck(item.goods_id)"  :value="item.isChecked"></van-checkbox><div class="show"><img :src="item.goods.goods_image" alt=""></div><div class="info"><span class="tit text-ellipsis-2">{{ item.goods.goods_name }}</span><span class="bottom"><div class="price">￥ <span>{{ item.goods.goods_price_min }}</span></div><!-- 既希望保留原本的形參，又需要通過調用函數傳參 => 箭頭函數包裝一層 --><CountBox @input="(value) => changeCount(value, item.goods_id, item.goods_sku_id)" :value="item.goods_num"></CountBox></span></div></div></div><div class="footer-fixed"><div @click="toggleAllCheck" class="all-check"><van-checkbox :value="isAllChecked"  icon-size="18"></van-checkbox>全選</div><div class="all-total"><div class="price"><span>合計：</span><span>￥ <i class="totalPrice">{{ selPrice }}</i></span></div><div v-if="!isEdit" class="goPay" :class="{ disabled: selCount === 0 }"  @click="goPay">結算({{ selCount }})</div><div v-else @click="handleDel" class="delete" :class="{ disabled: selCount === 0 }" >刪除</div></div></div></div><div class="empty-cart" v-else><img src="@/assets/empty.png" alt=""><div class="tips">您的購物車是空的, 快去逛逛吧</div><div class="btn" @click="$router.push('/')">去逛逛</div></div></div>
</template><script>
import CountBox from '@/components/CountBox.vue'
import { mapGetters, mapState } from 'vuex'
export default {name: 'CartPage',components: {CountBox},data () {return {isEdit: false}},computed: {...mapState('cart', ['cartList']),...mapGetters('cart', ['cartTotal', 'selCartList', 'selCount', 'selPrice', 'isAllChecked']),isLogin () {return this.$store.getters.token}},created () {// 必須是登錄過的用戶，才能用戶購物車列表if (this.isLogin) {this.$store.dispatch('cart/getCartAction')}},methods: {// 小選控制全選toggleCheck (goodsId) {this.$store.commit('cart/toggleCheck', goodsId)},// 全選控制小選toggleAllCheck () {this.$store.commit('cart/toggleAllCheck', !this.isAllChecked)},changeCount (goodsNum, goodsId, goodsSkuId) {// console.log(goodsNum, goodsId, goodsSkuId)// 調用 vuex 的 action，進行數量的修改this.$store.dispatch('cart/changeCountAction', {goodsNum,goodsId,goodsSkuId})},async handleDel () {if (this.selCount === 0) returnawait this.$store.dispatch('cart/delSelect')this.isEdit = false},goPay () {// 判斷有沒有選中商品if (this.selCount > 0) {// 有選中的 商品 才進行結算跳轉this.$router.push({path: '/pay',query: {mode: 'cart',cartIds: this.selCartList.map(item => item.id).join(',') // 'cartId,cartId,cartId'}})}}},watch: {// 監視編輯狀態，動態控制復選框狀態isEdit (value) {if (value) {this.$store.commit('cart/toggleAllCheck', false)} else {this.$store.commit('cart/toggleAllCheck', true)}}}
}
</script><style lang="less" scoped>
// 主題 padding
.cart {padding-top: 46px;padding-bottom: 100px;background-color: #f5f5f5;min-height: 100vh;.cart-title {height: 40px;display: flex;justify-content: space-between;align-items: center;padding: 0 10px;font-size: 14px;.all {i {font-style: normal;margin: 0 2px;color: #fa2209;font-size: 16px;}}.edit {.van-icon {font-size: 18px;}}}.cart-item {margin: 0 10px 10px 10px;padding: 10px;display: flex;justify-content: space-between;background-color: #ffffff;border-radius: 5px;.show img {width: 100px;height: 100px;}.info {width: 210px;padding: 10px 5px;font-size: 14px;display: flex;flex-direction: column;justify-content: space-between;.bottom {display: flex;justify-content: space-between;.price {display: flex;align-items: flex-end;color: #fa2209;font-size: 12px;span {font-size: 16px;}}.count-box {display: flex;width: 110px;.add,.minus {width: 30px;height: 30px;outline: none;border: none;}.inp {width: 40px;height: 30px;outline: none;border: none;background-color: #efefef;text-align: center;margin: 0 5px;}}}}}
}.footer-fixed {position: fixed;left: 0;bottom: 50px;height: 50px;width: 100%;border-bottom: 1px solid #ccc;background-color: #fff;display: flex;justify-content: space-between;align-items: center;padding: 0 10px;.all-check {display: flex;align-items: center;.van-checkbox {margin-right: 5px;}}.all-total {display: flex;line-height: 36px;.price {font-size: 14px;margin-right: 10px;.totalPrice {color: #fa2209;font-size: 18px;font-style: normal;}}.goPay, .delete {min-width: 100px;height: 36px;line-height: 36px;text-align: center;background-color: #fa2f21;color: #fff;border-radius: 18px;&.disabled {background-color: #ff9779;}}}}.empty-cart {padding: 80px 30px;img {width: 140px;height: 92px;display: block;margin: 0 auto;}.tips {text-align: center;color: #666;margin: 30px;}.btn {width: 110px;height: 32px;line-height: 32px;text-align: center;background-color: #fa2c20;border-radius: 16px;color: #fff;display: block;margin: 0 auto;}
}
</style>

效果：

31. 訂單結算臺

說明1：所有的結算，本質上就是跳轉到“訂單結算臺”，并且，跳轉的同時，需要攜帶上對應的訂單相關參數，具體需要哪些參數，基于“訂單結算臺”的需求來定。

目標：封裝通用的訂單信息確認接口

說明2：這里的訂單信息確認結算，有兩種情況

1. 購物車結算
2. 立即購買結算
訂單信息確認，可以共用同一個接口（參數不同）

①src/api/address.js

import request from '@/utils/request'// 獲取地址列表
export const getAddressList = () => {return request.get('/address/list')
}

②src/api/order.js

import request from '@/utils/request'// 訂單信息確認
// mode: cart => obj { cartIds }
// mode: buyNow => obj { goodsId, goodsNum, goodsSkuId }
export const checkOrder = (mode, obj) => {return request.get('/checkout/order', {params: {mode, // cart or buyNowdelivery: 10, // 10 快遞, 20 門店自提couponId: 0, // 優惠券id，傳0表示不使用優惠券isUsePoints: 0, // 積分，傳0，表示不使用積分...obj // 將傳遞過來的參數動態展開}})
}// 提交訂單
// 訂單信息確認
// mode: cart => obj { cartIds, remark }
// mode: buyNow => obj { goodsId, goodsNum, goodsSkuId, remark }
export const submitOrder = (mode, obj) => {return request.post('/checkout/submit', {mode,delivery: 10, // 配送方式-快遞couponId: 0, // 優惠券isUsePoints: 0, // 積分payType: 10, // 支付方式 - 余額支付...obj})
}

③src/views/pay/index.vue

<template><div class="pay"><van-nav-bar fixed title="訂單結算臺" left-arrow @click-left="$router.go(-1)" /><!-- 地址相關 --><div class="address"><div class="left-icon"><van-icon name="logistics" /></div><div class="info" v-if="selectedAddress.address_id"><div class="info-content"><span class="name">{{ selectedAddress.name }}</span><span class="mobile">{{ selectedAddress.phone }}</span></div><div class="info-address">{{ longAddress }}</div></div><div class="info" v-else>請選擇配送地址</div><div class="right-icon"><van-icon name="arrow" /></div></div><!-- 訂單明細 --><div class="pay-list" v-if="order.goodsList"><div class="list"><div class="goods-item" v-for="item in order.goodsList" :key="item.goods_id"><div class="left"><img :src="item.goods_image" alt="" /></div><div class="right"><p class="tit text-ellipsis-2">{{ item.goods_name }}</p><p class="info"><span class="count">x{{ item.total_num }}</span><span class="price">￥{{ item.total_pay_price }}</span></p></div></div></div><div class="flow-num-box"><span>共 {{ order.orderTotalNum }} 件商品，合計：</span><span class="money">￥{{ order.orderTotalPrice }}</span></div><div class="pay-detail"><div class="pay-cell"><span>訂單總金額：</span><span class="red">￥{{ order.orderTotalPrice }}</span></div><div class="pay-cell"><span>優惠券：</span><span>無優惠券可用</span></div><div class="pay-cell"><span>配送費用：</span><span v-if="!selectedAddress">請先選擇配送地址</span><span v-else class="red">+￥0.00</span></div></div><!-- 支付方式 --><div class="pay-way"><span class="tit">支付方式</span><div class="pay-cell"><span><van-icon name="balance-o" />余額支付（可用 ￥ {{ personal.balance }} 元）</span><!-- <span>請先選擇配送地址</span> --><span class="red"><van-icon name="passed" /></span></div></div><!-- 買家留言 --><div class="buytips"><textarea v-model="remark" placeholder="選填：買家留言（50字內）" name="" id="" cols="30" rows="10"></textarea></div></div><!-- 底部提交 --><div class="footer-fixed"><div class="left">實付款：<span>￥{{ order.orderTotalPrice }}</span></div><div class="tipsbtn" @click="submitOrder">提交訂單</div></div></div>
</template><script>
import { getAddressList } from '@/api/address'
import { checkOrder, submitOrder } from '@/api/order'
import loginConfirm from '@/mixins/loginConfirm'
export default {name: 'PayIndex',mixins: [loginConfirm],data () {return {addressList: [],order: {},personal: {},remark: '' // 備注留言}},computed: {selectedAddress () {// 這里地址管理非主線業務，直接獲取第一個項作為選中的地址return this.addressList[0] || {}},longAddress () {const region = this.selectedAddress.regionreturn region.province + region.city + region.region + this.selectedAddress.detail},mode () {return this.$route.query.mode},cartIds () {return this.$route.query.cartIds},goodsId () {return this.$route.query.goodsId},goodsSkuId () {return this.$route.query.goodsSkuId},goodsNum () {return this.$route.query.goodsNum}},created () {this.getAddressList()this.getOrderList()},methods: {async submitOrder () {// 購物車結算if (this.mode === 'cart') {await submitOrder(this.mode, {cartIds: this.cartIds,remark: this.remark})}// 立即購買if (this.mode === 'buyNow') {await submitOrder(this.mode, {goodsId: this.goodsId,goodsSkuId: this.goodsSkuId,goodsNum: this.goodsNum,remark: this.remark})}this.$toast.success('支付成功')this.$router.replace('/myorder')},async getAddressList () {const { data: { list } } = await getAddressList()this.addressList = list},async getOrderList () {// 購物車結算if (this.mode === 'cart') {const { data: { order, personal } } = await checkOrder(this.mode, {cartIds: this.cartIds})this.order = orderthis.personal = personal}// 立刻購買結算if (this.mode === 'buyNow') {const { data: { order, personal } } = await checkOrder(this.mode, {goodsId: this.goodsId,goodsSkuId: this.goodsSkuId,goodsNum: this.goodsNum})this.order = orderthis.personal = personal}}}
}
</script><style lang="less" scoped>
.pay {padding-top: 46px;padding-bottom: 46px;::v-deep {.van-nav-bar__arrow {color: #333;}}
}
.address {display: flex;align-items: center;justify-content: flex-start;padding: 20px;font-size: 14px;color: #666;position: relative;background: url(@/assets/border-line.png) bottom repeat-x;background-size: 60px auto;.left-icon {margin-right: 20px;}.right-icon {position: absolute;right: 20px;top: 50%;transform: translateY(-7px);}
}
.goods-item {height: 100px;margin-bottom: 6px;padding: 10px;background-color: #fff;display: flex;.left {width: 100px;img {display: block;width: 80px;margin: 10px auto;}}.right {flex: 1;font-size: 14px;line-height: 1.3;padding: 10px;padding-right: 0px;display: flex;flex-direction: column;justify-content: space-evenly;color: #333;.info {margin-top: 5px;display: flex;justify-content: space-between;.price {color: #fa2209;}}}
}.flow-num-box {display: flex;justify-content: flex-end;padding: 10px 10px;font-size: 14px;border-bottom: 1px solid #efefef;.money {color: #fa2209;}
}.pay-cell {font-size: 14px;padding: 10px 12px;color: #333;display: flex;justify-content: space-between;.red {color: #fa2209;}
}
.pay-detail {border-bottom: 1px solid #efefef;
}.pay-way {font-size: 14px;padding: 10px 12px;border-bottom: 1px solid #efefef;color: #333;.tit {line-height: 30px;}.pay-cell {padding: 10px 0;}.van-icon {font-size: 20px;margin-right: 5px;}
}.buytips {display: block;textarea {display: block;width: 100%;border: none;font-size: 14px;padding: 12px;height: 100px;}
}.footer-fixed {position: fixed;background-color: #fff;left: 0;bottom: 0;width: 100%;height: 46px;line-height: 46px;border-top: 1px solid #efefef;font-size: 14px;display: flex;.left {flex: 1;padding-left: 12px;color: #666;span {color:#fa2209;}}.tipsbtn {width: 121px;background: linear-gradient(90deg,#f9211c,#ff6335);color: #fff;text-align: center;line-height: 46px;display: block;font-size: 14px;}
}
</style>

如果出現收貨地址為空的問題，可以清空token，重新登錄，手機號填：18917286702（這個號應該是實現了編輯收貨地址）

效果：

32. 訂單管理 & 個人中心（快速實現）

目標：基于筆記，快速實現訂單管理和個人中心跑通流程

（1）訂單管理

①src/utils/vant-ui.js

import { Tab, Tabs } from 'vant';Vue.use(Tab);
Vue.use(Tabs);

②src/api/order.js

// 訂單列表
export const getMyOrderList = (dataType, page) => {return request.get('/order/list', {params: {dataType,page // List}})
}

③src/views/myorder/index.vue

<template><div class="order"><van-nav-bar title="我的訂單" left-arrow @click-left="$router.go(-1)" /><van-tabs v-model="active" sticky><van-tab name="all" title="全部"></van-tab><van-tab name="payment" title="待支付"></van-tab><van-tab name="delivery" title="待發貨"></van-tab><van-tab name="received" title="待收貨"></van-tab><van-tab name="comment" title="待評價"></van-tab></van-tabs><OrderListItem v-for="item in list" :key="item.order_id" :item="item"></OrderListItem></div>
</template><script>
import OrderListItem from '@/components/OrderListItem.vue'
import { getMyOrderList } from '@/api/order'
export default {name: 'OrderPage',components: {OrderListItem},data () {return {active: this.$route.query.dataType || 'all',page: 1,list: []}},methods: {async getOrderList () {const { data: { list } } = await getMyOrderList(this.active, this.page)list.data.forEach((item) => {item.total_num = 0item.goods.forEach(goods => {item.total_num += goods.total_num})})this.list = list.data}},watch: {active: {immediate: true,handler () {this.getOrderList()}}}
}
</script><style lang="less" scoped>
.order {background-color: #fafafa;
}
.van-tabs {position: sticky;top: 0;
}
</style>

④src/components/OrderListItem.vue

<template><div class="order-list-item" v-if="item.order_id"><div class="tit"><div class="time">{{ item.create_time }}</div><div class="status"><span>{{ item.state_text }}</span></div></div><div class="list" ><div class="list-item" v-for="(goods, index) in item.goods" :key="index"><div class="goods-img"><img :src="goods.goods_image" alt=""></div><div class="goods-content text-ellipsis-2">{{ goods.goods_name }}</div><div class="goods-trade"><p>￥ {{ goods.total_pay_price }}</p><p>x {{ goods.total_num }}</p></div></div></div><div class="total">共 {{ item.total_num }} 件商品，總金額 ￥{{ item.total_price }}</div><div class="actions"><div v-if="item.order_status === 10"><span v-if="item.pay_status === 10">立刻付款</span><span v-else-if="item.delivery_status === 10">申請取消</span><span v-else-if="item.delivery_status === 20 || item.delivery_status === 30">確認收貨</span></div><div v-if="item.order_status === 30"><span>評價</span></div></div></div>
</template><script>
export default {props: {item: {type: Object,default: () => {return {}}}}
}
</script><style lang="less" scoped>
.order-list-item {margin: 10px auto;width: 94%;padding: 15px;background-color: #ffffff;box-shadow: 0 0.5px 2px 0 rgba(0,0,0,.05);border-radius: 8px;color: #333;font-size: 13px;.tit {height: 24px;line-height: 24px;display: flex;justify-content: space-between;margin-bottom: 20px;.status {color: #fa2209;}}.list-item {display: flex;.goods-img {width: 90px;height: 90px;margin: 0px 10px 10px 0;img {width: 100%;height: 100%;}}.goods-content {flex: 2;line-height: 18px;max-height: 36px;margin-top: 8px;}.goods-trade {flex: 1;line-height: 18px;text-align: right;color: #b39999;margin-top: 8px;}}.total {text-align: right;}.actions {text-align: right;span {display: inline-block;height: 28px;line-height: 28px;color: #383838;border: 0.5px solid #a8a8a8;font-size: 14px;padding: 0 15px;border-radius: 5px;margin: 10px 0;}}
}
</style>

效果：

（2）個人中心

①src/api/user.js

import request from '@/utils/request'// 獲取個人信息
export const getUserInfoDetail = () => {return request.get('/user/info')
}

②src/store/modules/user.js

import { getInfo, setInfo } from '@/utils/storage'export default {namespaced: true,state () {return {// 個人權證相關userInfo: getInfo()}},mutations: {// 所有mutations的第一個參數都是statesetUserInfo (state, obj) {state.userInfo = objsetInfo(obj)}},actions: {logout (context) {// 重置個人信息context.commit('setUserInfo', {})// 重置購物車信息(跨模塊調用mutation) cart/setCartListcontext.commit('cart/setCartList', [], { root: true })}},getters: {}
}

③src/views/layout/user.vue

<template><div class="user"><div class="head-page" v-if="isLogin"><div class="head-img"><img src="@/assets/default-avatar.png" alt="" /></div><div class="info"><div class="mobile">{{ detail.mobile }}</div><div class="vip"><van-icon name="diamond-o" />普通會員</div></div></div><div v-else class="head-page" @click="$router.push('/login')"><div class="head-img"><img src="@/assets/default-avatar.png" alt="" /></div><div class="info"><div class="mobile">未登錄</div><div class="words">點擊登錄賬號</div></div></div><div class="my-asset"><div class="asset-left"><div class="asset-left-item"><span>{{ detail.pay_money || 0 }}</span><span>賬戶余額</span></div><div class="asset-left-item"><span>0</span><span>積分</span></div><div class="asset-left-item"><span>0</span><span>優惠券</span></div></div><div class="asset-right"><div class="asset-right-item"><van-icon name="balance-pay" /><span>我的錢包</span></div></div></div><div class="order-navbar"><div class="order-navbar-item" @click="$router.push('/myorder?dataType=all')"><van-icon name="balance-list-o" /><span>全部訂單</span></div><div class="order-navbar-item" @click="$router.push('/myorder?dataType=payment')"><van-icon name="clock-o" /><span>待支付</span></div><div class="order-navbar-item" @click="$router.push('/myorder?dataType=delivery')"><van-icon name="logistics" /><span>待發貨</span></div><div class="order-navbar-item" @click="$router.push('/myorder?dataType=received')"><van-icon name="send-gift-o" /><span>待收貨</span></div></div><div class="service"><div class="title">我的服務</div><div class="content"><div class="content-item"><van-icon name="records" /><span>收貨地址</span></div><div class="content-item"><van-icon name="gift-o" /><span>領券中心</span></div><div class="content-item"><van-icon name="gift-card-o" /><span>優惠券</span></div><div class="content-item"><van-icon name="question-o" /><span>我的幫助</span></div><div class="content-item"><van-icon name="balance-o" /><span>我的積分</span></div><div class="content-item"><van-icon name="refund-o" /><span>退換/售后</span></div></div></div><div class="logout-btn"><button v-if="isLogin" @click="logout">退出登錄</button></div></div>
</template><script>
import { getUserInfoDetail } from '@/api/user.js'
export default {name: 'UserPage',data () {return {detail: {}}},created () {if (this.isLogin) {this.getUserInfoDetail()}},computed: {isLogin () {return this.$store.getters.token}},methods: {async getUserInfoDetail () {const { data: { userInfo } } = await getUserInfoDetail()this.detail = userInfo},logout () {this.$dialog.confirm({title: '溫馨提示',message: '你確認要退出么'}).then(() => {// 退出是一個動作 => 包含了兩步，分別是將 user 和 cart 進行重置this.detail = {}this.$store.dispatch('user/logout')}).catch(() => {})}}
}
</script><style lang="less" scoped>
.user {min-height: 100vh;background-color: #f7f7f7;padding-bottom: 50px;
}.head-page {height: 130px;background: url("http://cba.itlike.com/public/mweb/static/background/user-header2.png");background-size: cover;display: flex;align-items: center;.head-img {width: 50px;height: 50px;border-radius: 50%;overflow: hidden;margin: 0 10px;img {width: 100%;height: 100%;object-fit: cover;}}
}
.info {.mobile {margin-bottom: 5px;color: #c59a46;font-size: 18px;font-weight: bold;}.vip {display: inline-block;background-color: #3c3c3c;padding: 3px 5px;border-radius: 5px;color: #e0d3b6;font-size: 14px;.van-icon {font-weight: bold;color: #ffb632;}}
}.my-asset {display: flex;padding: 20px 0;font-size: 14px;background-color: #fff;.asset-left {display: flex;justify-content: space-evenly;flex: 3;.asset-left-item {display: flex;flex-direction: column;justify-content: center;align-items: center;span:first-child {margin-bottom: 5px;color: #ff0000;font-size: 16px;}}}.asset-right {flex: 1;.asset-right-item {display: flex;flex-direction: column;justify-content: center;align-items: center;.van-icon {font-size: 24px;margin-bottom: 5px;}}}
}.order-navbar {display: flex;padding: 15px 0;margin: 10px;font-size: 14px;background-color: #fff;border-radius: 5px;.order-navbar-item {display: flex;flex-direction: column;justify-content: center;align-items: center;width: 25%;.van-icon {font-size: 24px;margin-bottom: 5px;}}
}.service {font-size: 14px;background-color: #fff;border-radius: 5px;margin: 10px;.title {height: 50px;line-height: 50px;padding: 0 15px;font-size: 16px;}.content {display: flex;justify-content: flex-start;flex-wrap: wrap;font-size: 14px;background-color: #fff;border-radius: 5px;.content-item {display: flex;flex-direction: column;justify-content: center;align-items: center;width: 25%;margin-bottom: 20px;.van-icon {font-size: 24px;margin-bottom: 5px;color: #ff3800;}}}
}.logout-btn {button {width: 60%;margin: 10px auto;display: block;font-size: 13px;color: #616161;border-radius: 9px;border: 1px solid #dcdcdc;padding: 7px 0;text-align: center;background-color: #fafafa;}
}
</style>

效果：

33. 打包發布

目標：明確打包的作用

說明：vue腳手架只是開發過程中，協助開發的工具，當真正開發完成了，腳手架不參與上線。

打包的作用：

①將多個文件壓縮合并成一個文件；

②語法降級

③less sass ts語法解析

打包后，可以生成瀏覽器能夠直接運行的網頁，就是需要上線的源碼

目標：打包的命令和配置

說明：vue腳手架工具已經提供了打包命令，直接使用即可。

①配置：默認情況下，需要放到服務器根目錄打開，如果希望雙擊運行，需要配置publicPath配成相對路徑

vue.config.js

const { defineConfig } = require('@vue/cli-service')
module.exports = defineConfig({publicPath: './',  // 相對路徑transpileDependencies: true
})

②打包構建

命令： npm run build

結果：在項目的根目錄會自動創建一個文件夾`dist`，dist中的文件就是打包后的文件，只需要放到服務器中即可。

③結果：將打包后的dist文件夾里的內容上傳到服務器當中，雙擊index.html在瀏覽器中即可查看項目

34. 打包優化：路由懶加載

目標：配置路由懶加載，實現打包優化

說明：當打包構建應用時，JavaScript包會變得非常大，影響頁面加載。如果我們能把不同路由對應的組件分割成不同的代碼塊，然后然后當路由被訪問的時候才加載對應組件，這樣就更加高效率。

步驟1：異步組件改造 => src/router/index.js

import Vue from 'vue'
import VueRouter from 'vue-router'import Layout from '@/views/layout'
import Home from '@/views/layout/home'
import Category from '@/views/layout/category'
import Cart from '@/views/layout/cart'
import User from '@/views/layout/user'import store from '@/store'const Login = () => import('@/views/login')
const Search = () => import('@/views/search')
const SearchList = () => import('@/views/search/list')
const ProDetail = () => import('@/views/prodetail')
const Pay = () => import('@/views/pay')
const MyOrder = () => import('@/views/myorder')Vue.use(VueRouter)

步驟2：路由中應用

const router = new VueRouter({routes: [...{ path: '/prodetail/:id', component: ProDetail },{ path: '/pay', component: Pay },...]
})

步驟3：構建

npm run build

結果：

至此，Vue2學習告一段落，接下來進入Vue3的學習。