Vue-cli 3集成Cesium

之前记录了在Vue-Cli 2的基础上集成了Cesium，但现在Vue-Cli已更新到3，之前方法已不适用。在参考Vue-cli 3.0 + cesium 构建的基础上，验证记录Vue-Cli 3脚手架工具中集成Cesium的过程。

安装环境

• node.js: v10.16.0
• npm: 6.9.0
• vue: 2.6.10
• cesium: 1.45.0
• vue-cli: 3.9.2
• webpack: 4.28.4

安装配置

• 安装nodejs

• 安装vue-cli脚手架

npm install -g @vue/cli
vue create my-project
cd my-project
npm run serve

• 安装 cesium

npm i cesium --save

• 新建 vue.config.js 文件，配置内容如下:

const CopyWebpackPlugin = require('copy-webpack-plugin')
const webpack = require('webpack')
const path = require('path')

const debug = process.env.NODE_ENV !== 'production'
let cesiumSource = './node_modules/cesium/Source'
let cesiumWorkers = '../Build/Cesium/Workers'
module.exports = {
    baseUrl: '',
    devServer: {
        port: 9999
    },
    configureWebpack: {
        output: {
            sourcePrefix: ' '
        },
        amd: {
            toUrlUndefined: true
        },
        resolve: {
            alias: {
                'vue$': 'vue/dist/vue.esm.js',
                '@': path.resolve('src'),
                'cesium': path.resolve(__dirname, cesiumSource)
            }
        },
        plugins: [
            new CopyWebpackPlugin([ { from: path.join(cesiumSource, cesiumWorkers), to: 'Workers'}]),
            new CopyWebpackPlugin([ { from: path.join(cesiumSource, 'Assets'), to: 'Assets'}]),
            new CopyWebpackPlugin([ { from: path.join(cesiumSource, 'Widgets'), to: 'Widgets'}]),
            new CopyWebpackPlugin([ { from: path.join(cesiumSource, 'ThirdParty/Workers'), to: 'ThirdParty/Workers'}]),
            new webpack.DefinePlugin({
                CESIUM_BASE_URL: JSON.stringify('./')
            })
        ],
        module: {
            unknownContextCritical: /^.\/.*$/,
            unknownContextCritical: false

        }
    }
}

• 在 src/components 下新建 CesiumViewer.vue 文件，内容如下:

<template>
    <div id="cesiumContainer" class="fullSize">

    </div>
</template>

<script>
export default {
    name: "CesiumViewer"
}
</script>

<style scoped>
.fullSize {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    border: none;
    width: 100%;
    height: 100%;
}
</style>

• 修改 router.js ，引入 CesiumViewer组件，内容如下:

import Vue from 'vue'
import Router from 'vue-router'
import CesiumViewer from './components/CesiumViewer.vue'

Vue.use(Router)

export default new Router({
  routes: [
    {
      path: '/',
      name: 'CesiumViewer',
      component: CesiumViewer
    }
  ]
})

• 修改App.vue ，内容如下：

<template>
  <div id="app">
    <router-view/>
  </div>
</template>

<style lang="css">
  html, body, #cesiumContainer {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
  }
  #app {
    font-family: 'Avenir', Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-align: center;
    color: #2c3e50;
  }
</style>

• 最后修改 main.js 内容如下:

import Vue from 'vue'
import App from './App.vue'
import router from './router'
import store from './store'
import Cesium from 'cesium/Cesium'
// noinspection ES6UnusedImports
import widget from 'cesium/Widgets/widgets.css'

Vue.config.productionTip = false

new Vue({
  router,
  store,
  render: h => h(App),
  mounted () {
    var viewer = new Cesium.Viewer('cesiumContainer')
  }
}).$mount('#app')

• 最后 npm serve ，打开浏览器输入localhost:8080查看效果。

注意事项

不应将viewer定义在vue组件的data对象中，因为vue会劫持数据，导致cesium卡顿。具体请参考vue+cesium cesium数据量太大导致浏览器卡顿解决办法。

参考链接

1. Vue-cli 3.0 + cesium 构建,by QingMings.
2. cesium-and-webpack,by marsgis.
3. Vue.js集成Cesium,by jack huang.
4. Cesium笔记 — Vue+Cesium开发环境搭建（基于Cesium1.69）,by 芒果香蕉.
5. vue+cesium cesium数据量太大导致浏览器卡顿解决办法,by 浮年似水.