什么是微前端
微前端指的是在于浏览器中得微服务。
微前端是用户界面中的一部分,可以分割为多个react、Vue、Angular等框架来渲染组合。没有微前端可由不同的开发团队只管里选择不同框架。比如拥有独立的git仓库、独立构建等。
构建主应用
1、安装single-spa依赖npm install single-spa --save -d并在mian.js中引入
import Vue from 'vue'
import App from './App.vue'
import router from './router'
import store from './store'
import './single-spa-config.js'
Vue.config.productionTip = false
new Vue({
router,
store,
render: h => h(App)
}).$mount('#app')
2、创建single-spa的配置文件为single-spa-config
singleSpa.registerApplication: 注册子应用;
appName: 子应用名称;
applicationOrLoadingFn: 子应用注册函数,子应用需要返回 single-spa 的生命周期对象;
activityFn: 回调函数入参 location 对象,可以写自定义匹配路由加载规则;
/* eslint-disable */
import * as singleSpa from 'single-spa'; //导入single-spa
import axios from 'axios';
/*
* runScript:一个promise同步方法。可以代替创建一个script标签,然后加载服务
* */
const runScript = async (url) => {
return new Promise((resolve, reject) => {
const script = document.createElement('script');
script.src = url;
script.onload = resolve;
script.onerror = reject;
const firstScript = document.getElementsByTagName('script')[0];
firstScript.parentNode.insertBefore(script, firstScript);
});
};
/*
* getManifest:远程加载manifest.json 文件,解析需要加载的js
* */
const getManifest = (url, bundle) => new Promise(async (resolve) => {
console.log(url, bundle)
const { data } = await axios.get(url);
const { entrypoints, publicPath } = data;
const assets = entrypoints[bundle].assets;
for (let i = 0; i < assets.length; i++) {
await runScript(publicPath + assets[i]).then(() => {
if (i === assets.length - 1) {
resolve()
}
})
}
});
singleSpa.registerApplication( //注册微前端服务
'cv',
async () => {
// 注册用函数,
// return 一个singleSpa 模块对象,模块对象来自于要加载的js导出
// 如果这个函数不需要在线引入,只需要本地引入一块加载:
// () => import('xxx/main.js')
let singleVue = null;
await getManifest('http://localhost:3000/manifest.json', 'app').then(() => {
singleVue = window.singleVue;
});
return singleVue;
},
location => location.pathname.startsWith('/cv/') // 配置微前端模块前缀
);
singleSpa.registerApplication( //注册微前端服务
'lb',
async () => {
let singleVue = null;
await getManifest('http://localhost:5000/manifest.json', 'app').then(() => {
singleVue = window.singleVue;
});
return singleVue;
},
location => location.pathname.startsWith('/lb/') // 配置微前端模块前缀
);
singleSpa.start(); // 启动
3、在路由中注册统一路由,我们注册一个子服务路由,可填不填写component字段。
{
path: '/cv',
name: 'cv',
component: () => import(/* webpackChunkName: "about" */ '@/components/child.vue')
},
child.vue文件
App.vue 增加一个 子项目dom 的 id
// 点击路由跳转
// 子项目id
子项目创建
1、安装single-spa-vue依赖npm install single-spa-vue --save -d
在mian.js中引入
import Vue from 'vue'
import App from './App.vue'
import router from './router'
import store from './vuex/store'
import singleSpaVue from 'single-spa-vue'
import ElementUI from 'element-ui';
import 'element-ui/lib/theme-chalk/index.css';
Vue.config.productionTip = false
Vue.use(ElementUI);
const errorHandler = (error, vm) => {
console.error('抛出全局异常', error);
}
Vue.config.errorHandler = errorHandler;
Vue.prototype.$throw = (error) => errorHandler(error, this);
const vueOptions = {
el: '#childApp',
router,
store,
render: h => h(App)
}
// 判断当前页面使用singleSpa应用,不是就渲染
if (!window.singleSpaNavigate) {
delete vueOptions.el
new Vue(vueOptions).$mount('#app')
}
// singleSpaVue包装一个vue微前端服务对象
const vueLifecycles = singleSpaVue({
Vue,
appOptions: vueOptions
})
export const bootstrap = vueLifecycles.bootstrap // 启动时
export const mount = vueLifecycles.mount // 挂载时
export const unmount = vueLifecycles.unmount // 卸载时
export default vueLifecycles
2、安装stats-webpack-plugin插件npm install stats-webpack-plugin --save -d
vue.config.js
const StatsPlugin = require('stats-webpack-plugin');
module.exports = {
publicPath: '//localhost:5000',
// css在所有环境下,都不单独打包为文件。这样是为了保证最小引入(只引入js)
css: {
extract: false
},
configureWebpack: (config) => {
if (env === 'production') {
config.plugins.push(
new UglifyJsPlugin({
uglifyOptions: {
compress: {
// warnings: false,
drop_debugger: true, // console
drop_console: true,
pure_funcs: ['console.log'] // 移除console
}
}
})
);
}
config.plugins.push(
new StatsPlugin('manifest.json', {
chunkModules: false,
entrypoints: true,
source: false,
chunks: false,
modules: false,
assets: false,
children: false,
exclude: [/node_modules/]
}))
config.output.library = 'singleVue'
config.output.libraryTarget = 'window'
},
devtool: 'none'
},
devServer: {
contentBase: path.join(__dirname, 'dist'),
compress: true,
port: 5000,
headers: {"Access-Control-Allow-Origin":"*"} //本地跨域处理
}
}
3、router 配置
const router = new VueRouter({
mode: 'history',
base: '/cv/',
routes
})