SPA项目开发之首页导航+左侧菜单

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。

 

2. Mock.js使用步骤   

 

  2.1 安装mockjs依赖

 

      npm install mockjs -D 

下载成功后 package.json中会有

"mockjs": "^1.0.1-beta3",

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

开发环境 dev.env.js

 

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

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

 

生产环境 prod.env.js

'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 {
      /* 总线*/
      Bus:new Vue({

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

2.3 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)

login-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;

登录成功后跳转首页

   this.$router.push({
       path:"/AppMain"
   })    

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("collapsed-side",(v)=>{
          this.asideClass= v ? 'main-aside-collapsed' : 'main-aside'
        })
      }
    };
</script>
<style scoped>
    .main-container {
        height: 100%;
         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 */
         64px !important;
        height: 100%;
        background-color: #334157;
        margin: 0px;
    }

    .main-aside {
         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 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("collapsed-side",(v)=>{
          this.collapsed=v
        })
      }
    }
</script>
<style>
    .el-menu-vertical-demo:not(.el-menu--collapse) {
         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>

顶部导航栏 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("collapsed-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 {
         26px;
        height: 26px;
        position: absolute;
        top: 17px;
        left: 17px;
    }

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

vue Bus总线

    将一个空的Vue实例放到根组件下，所有的子组件都能调用

        main.js     

　　Bus:new Vue({

　　})

 

效果图：