SPA项目开发之首页导航和左侧菜单栏

1. Mock.js 

  前后端分离之后,前端迫切需要一种机制,不再需要依赖后端接口开发,而今天的主角mockjs就可以做到这一点 

   Mock.js是一个模拟数据的生成器,用来帮助前端调试开发、进行前后端的原型分离以及用来提高自动化测试效率。

   众所周知Mock.js因为两个重要的特性风靡前端:

   数据类型丰富

   支持生成随机的文本、数字、布尔值、日期、邮箱、链接、图片、颜色等。

   拦截Ajax请求

   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。

    更多内容,可以云Mockjs官方查看“http://mockjs.com/”

2. Mock.js使用步骤   

  2.1 安装mockjs依赖

      npm install mockjs -D              #只在开发环境使用

 2.2 引入

      为了只在开发环境使用mock,而打包到生产环境时自动不使用mock,我们可以在env中做一个配置

      (1)dev.env

'use strict'
const merge = require('webpack-merge')
const prodEnv = require('./prod.env')

module.exports = merge(prodEnv, {
  NODE_ENV: '"development"',
   	MOCK: 'true'
})

  (2)prod.env  

'use strict'
module.exports = {
  NODE_ENV: '"production"',
  MOCK: 'false'
}

  

  //开发环境下才会引入mockjs

      process.env.MOCK && require('@/mock')

 

      注1:import是ES6标准中的模块化解决方案,require是node中遵循CommonJS规范的模块化解决方案

          后者支持动态引入,也就是require(${path}/xx.js)

main.js

// 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 'element-ui/lib/theme-chalk/index.css'
process.env.MOCK && require('@/mock')
import App from './App'
import router from './router'
import ElementUI from 'element-ui'
import axios from '@/api/http'
import VueAxios from 'vue-axios'

Vue.use(ElementUI)
Vue.use(VueAxios,axios)
Vue.config.productionTip = false

/* eslint-disable no-new */
new Vue({
  el: '#app',
  data(){
    return{
      Bus:new Vue({

      })
    }
  },
  router,
  components: { App },
  template: '<App/>'
})

  

目录和文件创建

      在src目录下创建mock目录,定义mock主文件index.js,并在该文件中定义拦截路由配置,

      /src/mock/index.js

 

      注1:如何同时拦截get/post请求,并对get和post请求大小写不敏感呢?那就请使用正则表达式吧

           Mock.mock(url, /post|get/i,{})

 

      注2:Mockjs如何拦截带参数的GET请求

           在实践过程中,发现mockjs对GET请求的支持并不是很友好。

           例如:使用 Mock.mock("/user/getUserInfo", "get", mockData) 的时候,它只会拦截url等于 /user/getUserInfo 的请求,

           而对于带参数的请求,如/user/getUserInfo?id=12,因为不等于 /user/getUserInfo 就拦截不到。

           解决方案:通过正则表达式实现

           Mock.mock(RegExp(url + ".*"), /post|get/i, {...});  

index.js

import Mock from 'mockjs' //引入mockjs,npm已安装
import action from '@/api/action' //引入请求地址

//全局设置:设置所有ajax请求的超时时间,模拟网络传输耗时
Mock.setup({
	// timeout: 400  //延时400s请求到数据
	timeout: 200 - 400 //延时200-400s请求到数据
})

//引登陆的测试数据,并添加至mockjs
import loginInfo from '@/mock/json/login-mock.js'
let s1 = action.getFullPath('SYSTEM_USER_DOLOGIN')
Mock.mock(s1, "get", loginInfo)
// Mock.mock(s1, /post|get/i, loginInfo)

  lonin-mock.js

// const loginInfo = {
// 	code: -1,
// 	message: '密码错误'
// }

//使用mockjs的模板生成随机数据
const loginInfo = {
	'code|0-1': 0,
	'msg|3-10': 'msg'
}
export default loginInfo;

  后台首页:

Appmain.vue

<template>
	<el-container class="main-container">
		<el-aside v-bind:class="asideClass">
			<LeftNav></LeftNav>
		</el-aside>
		<el-container>
			<el-header class="main-header">
				<TopNav></TopNav>
			</el-header>
			<el-main class="main-center">Main</el-main>
		</el-container>
	</el-container>
</template>

<script>
	// 导入组件
	import TopNav from '@/components/TopNav.vue'
	import LeftNav from '@/components/LeftNav.vue'

	// 导出模块
	export default {
		data() {
		  return {
		    asideClass:'main-aside '
		  }
		},
    components:{
      TopNav,LeftNav
    } ,created(){
      this.$root.Bus.$on("collaspsed-side", (v)=>{
        this.asideClass = v ? 'main-aside-collapsed' :'main-aside ' ;
      });
}
	};
</script>
<style scoped>
	.main-container {
		height: 100%;
		width: 100%;
		box-sizing: border-box;
	}

	.main-aside-collapsed {
		/* 在CSS中,通过对某一样式声明! important ,可以更改默认的CSS样式优先级规则,使该条样式属性声明具有最高优先级 */
		width: 64px !important;
		height: 100%;
		background-color: #334157;
		margin: 0px;
	}

	.main-aside {
		width: 240px !important;
		height: 100%;
		background-color: #334157;
		margin: 0px;
	}

	.main-header,
	.main-center {
		padding: 0px;
		border-left: 2px solid #333;
	}
</style>

  左侧菜单栏leftNav.vue

<template>
  <el-menu default-active="2" class="el-menu-vertical-demo" background-color="#334157" text-color="#fff"
    active-text-color="#ffd04b" :collapse="collapsed">
    <!-- <el-menu default-active="2" :collapse="collapsed" collapse-transition router :default-active="$route.path" unique-opened class="el-menu-vertical-demo" background-color="#334157" text-color="#fff" active-text-color="#ffd04b"> -->
    <div class="logobox">
      <img class="logoimg" src="../assets/img/logo.png" alt="">
    </div>
    <el-submenu index="1">
      <template slot="title">
        <i class="el-icon-location"></i>
        <span>导航一</span>
      </template>
      <el-menu-item-group>
        <template slot="title">分组一</template>
        <el-menu-item index="1-1">选项1</el-menu-item>
        <el-menu-item index="1-2">选项2</el-menu-item>
      </el-menu-item-group>
      <el-menu-item-group title="分组2">
        <el-menu-item index="1-3">选项3</el-menu-item>
      </el-menu-item-group>
      <el-submenu index="1-4">
        <template slot="title">选项4</template>
        <el-menu-item index="1-4-1">选项1</el-menu-item>
      </el-submenu>
    </el-submenu>
    <el-menu-item index="2">
      <i class="el-icon-menu"></i>
      <span slot="title">导航二</span>
    </el-menu-item>
    <el-menu-item index="3" disabled>
      <i class="el-icon-document"></i>
      <span slot="title">导航三</span>
    </el-menu-item>
    <el-menu-item index="4">
      <i class="el-icon-setting"></i>
      <span slot="title">导航四</span>
    </el-menu-item>
  </el-menu>
</template>
<script>
  export default {
    data() {
      return {
        collapsed:false
      }
    },
    created(){
      this.$root.Bus.$on("collaspsed-side", (v)=>{
        this.collapsed = v;
      });

    }
  }
</script>
<style>
  .el-menu-vertical-demo:not(.el-menu--collapse) {
    width: 240px;
    min-height: 400px;
  }

  .el-menu-vertical-demo:not(.el-menu--collapse) {
    border: none;
    text-align: left;
  }

  .el-menu-item-group__title {
    padding: 0px;
  }

  .el-menu-bg {
    background-color: #1f2d3d !important;
  }

  .el-menu {
    border: none;
  }

  .logobox {
    height: 40px;
    line-height: 40px;
    color: #9d9d9d;
    font-size: 20px;
    text-align: center;
    padding: 20px 0px;
  }

  .logoimg {
    height: 40px;
  }
</style>

  导航条:TopNav.vue

<template>
  <!-- <el-menu :default-active="activeIndex2" class="el-menu-demo" mode="horizontal" @select="handleSelect" background-color="#545c64"
	 text-color="#fff" active-text-color="#ffd04b">
		<el-menu-item index="1">处理中心</el-menu-item>
		<el-submenu index="2">
			<template slot="title">我的工作台</template>
			<el-menu-item index="2-1">选项1</el-menu-item>
			<el-menu-item index="2-2">选项2</el-menu-item>
			<el-menu-item index="2-3">选项3</el-menu-item>
			<el-submenu index="2-4">
				<template slot="title">选项4</template>
				<el-menu-item index="2-4-1">选项1</el-menu-item>
				<el-menu-item index="2-4-2">选项2</el-menu-item>
				<el-menu-item index="2-4-3">选项3</el-menu-item>
			</el-submenu>
		</el-submenu>

		<el-menu-item index="3" disabled>消息中心</el-menu-item>
		<el-menu-item index="4"><a href="https://www.ele.me" target="_blank">订单管理</a></el-menu-item>
	</el-menu> -->
  <el-menu class="el-menu-demo" mode="horizontal" background-color="#334157" text-color="#fff" active-text-color="#fff">
    <el-button class="buttonimg">
      <img class="showimg" :src="collapsed?imgshow:imgsq" @click="doToggle()">
    </el-button>
    <el-submenu index="2" class="submenu">
      <template slot="title">超级管理员</template>
      <el-menu-item index="2-1">设置</el-menu-item>
      <el-menu-item index="2-2">个人中心</el-menu-item>
      <el-menu-item @click="exit()" index="2-3">退出</el-menu-item>
    </el-submenu>
  </el-menu>
</template>

<script>
  export default {
    data() {
      return {
        collapsed: false,
        imgshow: require('../assets/img/show.png'),
        imgsq: require('../assets/img/sq.png')
      }
    },
    methods:{
      exit(){
        this.$router.push({
          path:'/Login'
        })
      },
      doToggle(){
        this.collapsed = ! this.collapsed;
          this.$root.Bus.$emit("collaspsed-side",this.collapsed);
      }
    }
  }
</script>

<style scoped>
  .el-menu-vertical-demo:not(.el-menu--collapse) {
    border: none;
  }

  .submenu {
    float: right;
  }

  .buttonimg {
    height: 60px;
    background-color: transparent;
    border: none;
  }

  .showimg {
    width: 26px;
    height: 26px;
    position: absolute;
    top: 17px;
    left: 17px;
  }

  .showimg:active {
    border: none;
  }
</style>

  展示:

SPA项目开发之首页导航和左侧菜单栏

 

 

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