在項目中嘗試了mockjs,mock數據,實現先後端分離開發。前端
關於mockjs,官網描述的是vue
1.先後端分離webpack
2.不須要修改既有代碼,就能夠攔截 Ajax 請求,返回模擬的響應數據。ios
3.數據類型豐富git
4.經過隨機數據,模擬各類場景。github
等等優勢。web
總結起來就是在後端接口沒有開發完成以前,前端能夠用已有的接口文檔,在真實的請求上攔截ajax,並根據mockjs的mock數據的規則,模擬真實接口返回的數據,並將隨機的模擬數據返回參與相應的數據交互處理,這樣真正實現了先後臺的分離開發。ajax
與以往的本身模擬的假數據不一樣,mockjs能夠帶給咱們的是:在後臺接口未開發完成以前模擬數據,並返回,完成前臺的交互;在後臺數據完成以後,你所作的只是去掉mockjs:中止攔截真實的ajax,僅此而已。vue-cli
下面一步步的來實現vue-cli建立項目並添加一條新聞類的數據模擬接口:npm
1.安裝vue-cli全局腳手架
npm install --global vue-cli
2.建立vue項目
vue init webpack mockjs
cd mockjs
npm install axios --save
3.安裝mockjs
npm install mockjs --save-dev
4.項目目錄
axios/api 用來封裝axios
Hello.vue 頁面首頁
NeswCell.vue 新聞組件
router/index.js 路由
main.js 入口js
mock.js mockjs文件
在來看下完成後的效果
5.在入口js(main.js)裏引入mockjs
// The Vue build version to load with the `import` command // (runtime-only or standalone) has been set in webpack.base.conf with an alias. import Vue from 'vue' import App from './App' import router from './router' Vue.config.productionTip = false // 引入mockjs require('./mock.js') /* eslint-disable no-new */ new Vue({ el: '#app', router, template: '<App/>', components: { App } }) Vue.filter('getYMD', function(input) { return input.split(' ')[0]; })
這裏我添加了額一個經常使用的時間整理過濾器 getYMD
6. 添加一個mock規則(mock.js)
// 引入mockjs const Mock = require('mockjs'); // 獲取 mock.Random 對象 const Random = Mock.Random; // mock一組數據 const produceNewsData = function() { let articles = []; for (let i = 0; i < 100; i++) { let newArticleObject = { title: Random.csentence(5, 30), // Random.csentence( min, max ) thumbnail_pic_s: Random.dataImage('300x250', 'mock的圖片'), // Random.dataImage( size, text ) 生成一段隨機的 Base64 圖片編碼 author_name: Random.cname(), // Random.cname() 隨機生成一個常見的中文姓名 date: Random.date() + ' ' + Random.time() // Random.date()指示生成的日期字符串的格式,默認爲yyyy-MM-dd;Random.time() 返回一個隨機的時間字符串 } articles.push(newArticleObject) } return { articles: articles } } // Mock.mock( url, post/get , 返回的數據); Mock.mock('/news/index', 'post', produceNewsData);
7.在Hello.vue 中請求文檔接口,並接收mock數據
<template> <div class="index"> <div v-for="(item, key) in newsListShow"> <news-cell :newsDate="item" :key="key" ></news-cell> </div> </div> </template> <script> import api from './../axios/api.js' import NewsCell from './NewsCell.vue' export default { name: 'index', data () { return { newsListShow: [], } }, components: { NewsCell }, created() { this.setNewsApi(); }, methods:{ setNewsApi: function() { api.JH_news('/news/index', 'type=top&key=123456') .then(res => { console.log(res); this.newsListShow = res.articles; }); }, } } </script> <!-- Add "scoped" attribute to limit CSS to this component only --> <style scoped> .topNav{ width: 100%; background: #ED4040; position: fixed; top:0rem; left: 0; z-index: 10; } .simpleNav{ width: 100%; line-height: 1rem; overflow: hidden; overflow-x: auto; text-align: center; font-size: 0; font-family: '微軟雅黑'; white-space: nowrap; } .simpleNav::-webkit-scrollbar{height:0px} .simpleNavBar{ display: inline-block; width: 1.2rem; color:#fff; font-size:0.3rem; } .navActive{ color: #000; border-bottom: 0.05rem solid #000; } .placeholder{ width:100%; height: 1rem; } </style>
注意:api.JH_news是我封裝的axios函數
axios/api.js以下
import axios from 'axios' import vue from 'vue' axios.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded' // 請求攔截器 axios.interceptors.request.use(function(config) { return config; }, function(error) { return Promise.reject(error); }) // 響應攔截器 axios.interceptors.response.use(function(response) { return response; }, function(error) { return Promise.reject(error); }) // 封裝axios的post請求 export function fetch(url, params) { return new Promise((resolve, reject) => { axios.post(url, params) .then(response => { resolve(response.data); }) .catch((error) => { reject(error); }) }) } export default { JH_news(url, params) { return fetch(url, params); } }
8.在NewsCell.vue展現數據
<template> <section class="financial-list"> <section class="collect" @click="jumpPage"> <aside> <h2>{{newsDate.title}}</h2> <section class="Cleft clearfix"> <img class="fl" src="./../assets/icon/eyes.png" style="width:0.24rem;height:0.2rem;"> <span class="fl">{{newsDate.author_name}}</span> </section> <section class="Cright"> <img src="./../assets/icon/clock.png" style="width:0.2rem;height:0.2rem;"> <span>{{newsDate.date | getYMD}}</span> </section> <div style="clear: both"></div> </aside> <aside> <img :src="newsDate.thumbnail_pic_s" style="border-radius: 0.2rem;"> </aside> <div style="clear: both"></div> </section> </section> </template> <script> export default { name: 'NewsCell', props: { newsDate: Object }, data () { return { } }, computed: { }, methods: { jumpPage: function () { window.location.href = this.newsDate.url } } } </script> <style scoped> .financial-list { width: 100%; height: 100%; background-color: white; padding: 0.28rem 0; border-bottom: 1px solid #ccc; } .financial-list .collect { width: 92%; margin: 0 auto; } .financial-list .collect aside:nth-of-type(1) { width: 63%; float: left; } .financial-list .collect aside:nth-of-type(2) { width: 32%; height: 2rem; float: left; margin-left: 0.3rem; } .financial-list .collect h2 { width: 100%; height: 0.96rem; font-size: 0.32rem; color: #333333; line-height: 0.48rem; text-overflow: ellipsis; -o-text-overflow: ellipsis; overflow: hidden; } .financial-list .collect aside:nth-of-type(2) img { width: 100%; height: 100%; } .financial-list .collect aside .Cleft { width: 45%; float: left; margin-top: 0.66rem; } .financial-list .collect aside .Cleft span{ display: block; width: 1.4rem; margin-left: 0.05rem; white-space: nowrap; text-overflow: ellipsis; -o-text-overflow: ellipsis; overflow: hidden; } .financial-list .collect aside .Cright { width: 55%; float: right; margin-top: 0.66rem; } .financial-list .collect aside .Cright span{ display: inline-block; margin: 0.04rem 0 0 0.05rem; } .financial-list .collect aside span { font-size: 0.2rem; color: #999999; } .financial-list .collect aside .Cleft img, .financial-list .collect aside .Cright img { width: 0.18rem; height: 0.24rem; margin-top: 0.09rem; } </style>
完成
9.全部代碼能夠查看個人github: https://github.com/Jasonwang911/vue_mockjs