vue+mockjs 模拟数据,实现前后端分离开发
在项目中尝试了mockjs,mock数据,实现前后端分离开发。
关于mockjs,官网描述的是
1.前后端分离
2.不需要修改既有代码,就可以拦截 Ajax 请求,返回模拟的响应数据。
3.数据类型丰富
4.通过随机数据,模拟各种场景。
等等优点。
总结起来就是在后端接口没有开发完成之前,前端可以用已有的接口文档,在真实的请求上拦截ajax,并根据mockjs的mock数据的规则,模拟真实接口返回的数据,并将随机的模拟数据返回参与相应的数据交互处理,这样真正实现了前后台的分离开发。
与以往的自己模拟的假数据不同,mockjs可以带给我们的是:在后台接口未开发完成之前模拟数据,并返回,完成前台的交互;在后台数据完成之后,你所做的只是去掉mockjs:停止拦截真实的ajax,仅此而已。
下面一步步的来实现vue-cli创建项目并添加一条新闻类的数据模拟接口:
1.安装vue-cli全局脚手架
npm install --global vue-cli
2.创建vue项目
vue init webpack mockjs
cd mockjs
npm install axios --save
3.安装mockjs
npm install mockjs --save-dev
4.项目目录
axios/api 用来封装axios
Hello.vue 页面首页
NeswCell.vue 新闻组件
router/index.js 路由
main.js 入口js
mock.js mockjs文件
在来看下完成后的效果
5.在入口js(main.js)里引入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];
})
这里我添加了额一个常用的时间整理过滤器 getYMD
6. 添加一个mock规则(mock.js)
// 引入mockjsconst Mock = require(\'mockjs\');
// 获取 mock.Random 对象
const Random = Mock.Random;
// mock一组数据
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的图片\'), // Random.dataImage( size, text ) 生成一段随机的 Base64 图片编码
author_name: Random.cname(), // Random.cname() 随机生成一个常见的中文姓名
date: Random.date() + \' \' + Random.time() // Random.date()指示生成的日期字符串的格式,默认为yyyy-MM-dd;Random.time() 返回一个随机的时间字符串
}
articles.push(newArticleObject)
}
return {
articles: articles
}
}
// Mock.mock( url, post/get , 返回的数据);
Mock.mock(\'/news/index\', \'post\', produceNewsData);
7.在Hello.vue 中请求文档接口,并接收mock数据
<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: \'微软雅黑\';
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是我封装的axios函数
axios/api.js如下
import axios from \'axios\'import vue from \'vue\'
axios.defaults.headers.post[\'Content-Type\'] = \'application/x-www-form-urlencoded\'
// 请求拦截器
axios.interceptors.request.use(function(config) {
return config;
}, function(error) {
return Promise.reject(error);
})
// 响应拦截器
axios.interceptors.response.use(function(response) {
return response;
}, function(error) {
return Promise.reject(error);
})
// 封装axios的post请求
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展示数据
<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.所有代码可以查看我的github: https://github.com/Jasonwang911/vue_mockjs
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