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README.md
Apache-2.0

一、项目描述

  • React 版本请点击这里查看,全新界面超级好看!!!(o ゚ v ゚)ノ
  • 一个基于 Vue、Datav、Echart 框架的 " 数据大屏项目 ",通过 Vue 组件实现数据动态刷新渲染,内部图表可实现自由替换。部分图表使用 DataV 自带组件,可进行更改,详情请点击下方 DataV 文档。
  • 项目需要全屏展示(按 F11)。
  • 项目部分区域使用了全局注册方式,增加了打包体积,在实际运用中请使用 按需引入
  • 拉取项目之后,建议按照自己的功能区域重命名文件,现以简单的位置进行区分。
  • 项目环境:Vue-cli-3.0、DataV-2.7.3、Echarts-4.6.0(如果5.x版本有问题,请切换到4.x版本)、Webpack-4.0、Npm-6.13、Node-v12.16。
  • 请拉取 master 分支的代码,其余是开发分支。

友情链接:

  1. Vue 官方文档
  2. DataV 官方文档
  3. echarts 实例echarts API 文档
  4. 项目 gitee 地址(国内速度快)

项目展示 项目展示

二、主要文件介绍

文件 作用/功能
main.js 主目录文件,引入 Echart/DataV 等文件
utils 工具函数与 mixins 函数等
views/ index.vue 项目主结构
views/其余文件 界面各个区域组件(按照位置来命名)
assets 静态资源目录,放置 logo 与背景图片
assets / style.scss 通用 CSS 文件,全局项目快捷样式调节
assets / index.scss Index 界面的 CSS 文件
components/echart 所有 echart 图表(按照位置来命名)
common/... 全局封装的 ECharts 和 flexible 插件代码(适配屏幕尺寸,可定制化修改)

三、使用介绍

启动项目

需要提前安装好 nodejsnpm,下载项目后在项目主目录下运行 npm/cnpm install 拉取依赖包。安装完依赖包之后然后使用 vue-cli 或者直接使用命令npm run serve,就可以启动项目,启动项目后需要手动全屏(按 F11)。如果编译项目的时候提示没有 DataV 框架的依赖,输入 npm install @jiaminghi/data-view 或者 yarn add @jiaminghi/data-view 进行手动安装。

封装组件渲染图表

所有的 ECharts 图表都是基于 common/echart/index.vue 封装组件创建的,已经对数据和屏幕改动进行了监听,能够动态渲染图表数据和大小。在监听窗口小大的模块,使用了防抖函数来控制更新频率,节约浏览器性能。

项目配置了默认的 ECharts 图表样式,文件地址:common/echart/theme.json

封装的渲染图表组件支持传入以下参数,可根据业务需求自行添加/删除。

参数名称 类型 作用/功能
id String 唯一 id,渲染图表的节点(非必填,使用了 $el)
className String class样式名称(非必填)
options Object ECharts 配置(必填)
height String 图表高度(建议填)
width String 图表宽度(建议填)

动态渲染图表

动态渲染图表案例为 components 目录下各个图表组件,index 文件负责数据获取和处理,chart 文件负责监听和数据渲染。

chart 文件的主要逻辑为:

<template>
  <div>
    <Echart :options="options" id="id" height="height" width="width" ></Echart>
  </div>
</template>

<script>
  // 引入封装组件
import Echart from '@/common/echart'
export default {
  // 定义配置数据
  data(){ return { options: {}}},
  // 声明组件
  components: { Echart},
  // 接收数据
  props: {
    cdata: {
      type: Object,
      default: () => ({})
    },
  },
  // 进行监听,也可以使用 computed 计算属性实现此功能
  watch: {
    cdata: {
      handler (newData) {
        this.options ={
          // 这里编写 ECharts 配置
        }
      },
      // 立即监听
      immediate: true,
      // 深度监听
      deep: true
    }
  }
};
</script>

复用图表组件

复用图表组件案例为中间部分的 任务通过率与任务达标率 模块,两个图表类似,区别在于颜色和主要渲染数据。只需要传入对应的唯一 id 和样式,然后在复用的组件 components/echart/center/centerChartRate 里进行接收并在对应位置赋值即可。

如:在调用处 views/center.vue 里去定义好数据并传入组件

//组件调用
<span>今日任务通过率</span>
<centerChart :id="rate[0].id" :tips="rate[0].tips" :colorObj="rate[0].colorData" />

<span>今日任务达标率</span>
<centerChart :id="rate[1].id" :tips="rate[1].tips" :colorObj="rate[1].colorData" />

...
import centerChart from "@/components/echart/center/centerChartRate";

data() {
  return {
    rate: [
      {
        id: "centerRate1",
        tips: 60,
        ...
      },
      {
        id: "centerRate2",
        tips: 40,
        colorData: {
          ...
        }
      }
    ]
  }
}

更换边框

边框是使用了 DataV 自带的组件,只需要去 views 目录下去寻找对应的位置去查找并替换就可以,具体的种类请去 DavaV 官网查看 如:

<dv-border-box-1></dv-border-box-1>
<dv-border-box-2></dv-border-box-2>
<dv-border-box-3></dv-border-box-3>

更换图表

直接进入 components/echart 下的文件修改成你要的 echarts 模样,可以去echarts 官方社区里面查看案例。

Mixins 解决自适应适配功能

使用 mixins 注入解决了界面大小变动图表自适应适配的功能,函数在 utils/resizeMixins.js 中,应用在 common/echart/index.vue 的封装渲染组件,主要是对 this.chart 进行了功能注入。

屏幕适配

本项目借助了 flexible 插件,通过改变 rem 的值来进行适配,原设计为 1920px。 ,适配区间为:1366px ~ 2560px,本项目有根据实际情况进行源文件的更改,小屏幕(如:宽为 1366px)需要自己舍弃部分动态组件进行适配,如'动态文字变换组件'会影响布局,需要手动换成一般节点,

// flexible文件位置: `common/flexible.js`,修改部分如下
function refreshRem() {
  var width = docEl.getBoundingClientRect().width;
  // 最小1366px,最大适配2560px
  if (width / dpr < 1366) {
    width = 1366 * dpr;
  } else if (width / dpr > 2560) {
    width = 2560 * dpr;
  }
  // 原项目是1920px我设置成24等份,这样1rem就是80px
  var rem = width / 24;
  docEl.style.fontSize = rem + 'px';
  flexible.rem = win.rem = rem;
}

请求数据

现在的项目未使用前后端数据请求,建议使用 axios 进行数据请求,在 main.js 位置进行全局配置。

  • axios 的 main.js 配置参考范例(因人而异)
import axios from 'axios';

//把方法放到vue的原型上,这样就可以全局使用了
Vue.prototype.$http = axios.create({
  //设置20秒超时时间
  timeout: 20000,
  baseURL: 'http://172.0.0.1:80080', //这里写后端地址
});

四、更新情况

  1. 增加了 Echart 组件复用的功能,如:中间任务达标率的两个百分比图使用的是同一个组件。
  2. 修复了头部右侧的图案条不对称的问题。
  3. 修复屏幕适配问题,更换了所有的尺寸单位,统一使用 rem。
  4. 使用 Mixins 注入图表响应式代码。
  5. vue-awesome 改成按需引入的方式。
  6. 封装渲染函数,抽离了数据使逻辑更加清晰。
  7. 新增地图组件,并添加自动轮播功能

五、其余

这个项目是个人的作品,难免会有问题和 BUG,如果有问题请进行评论,我也会尽力去更新,自己也在前端学习的路上,欢迎交流,非常感谢!

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简介

一个基于 vue、datav、Echart 框架的大数据可视化(大屏展示)模板,提供数据动态刷新渲染、屏幕适应、内部图表自由替换、Mixins注入等功能,持续更新.... 展开 收起
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