一、svg图片准备

src/assets/icons/svg
其中svg目录里，存放了所需要的图片

index.js

import Vue from 'vue'
import SvgIcon from '@/components/SvgIcon'// svg component// register globally
Vue.component('svg-icon', SvgIcon)const req = require.context('./svg', false, /\.svg$/)
const requireAll = requireContext => requireContext.keys().map(requireContext)
requireAll(req)

main.js
全局导入项目

import './assets/icons' // icon

二、自定义Svg组件

开发第一步中所需要的SvgIcon 组件

<template><div v-if="isExternal" :style="styleExternalIcon" class="svg-external-icon svg-icon" v-on="$listeners" /><svg v-else :class="svgClass" aria-hidden="true" v-on="$listeners"><use :xlink:href="iconName" /></svg>
</template><script>
import { isExternal } from '@/utils/validate'export default {name: 'SvgIcon',props: {iconClass: {type: String,required: true},className: {type: String,default: ''}},computed: {isExternal() {return isExternal(this.iconClass)},iconName() {return `#icon-${this.iconClass}`},svgClass() {if (this.className) {return 'svg-icon ' + this.className} else {return 'svg-icon'}},styleExternalIcon() {return {mask: `url(${this.iconClass}) no-repeat 50% 50%`,'-webkit-mask': `url(${this.iconClass}) no-repeat 50% 50%`}}}
}
</script><style scoped>
.svg-icon {width: 1em;height: 1em;vertical-align: -0.15em;fill: currentColor;overflow: hidden;
}.svg-external-icon {background-color: currentColor;mask-size: cover!important;display: inline-block;
}
</style>

三、svg插件开发

package.json

    "svg-sprite-loader": "5.1.1",

vue.config.js

'use strict'
const path = require('path')function resolve(dir) {return path.join(__dirname, dir)
}
module.exports = {devServer: {port: 8081,host: '0.0.0.0',open: true,proxy: {// detail: https://cli.vuejs.org/config/#devserver-proxy[process.env.VUE_APP_BASE_API]: {target: `http://localhost:8080`,changeOrigin: true,pathRewrite: {['^' + process.env.VUE_APP_BASE_API]: ''}}}},chainWebpack(config) {// set svg-sprite-loaderconfig.module.rule('svg').exclude.add(resolve('src/assets/icons')).end()config.module.rule('icons').test(/\.svg$/).include.add(resolve('src/assets/icons')).end().use('svg-sprite-loader').loader('svg-sprite-loader').options({symbolId: 'icon-[name]'}).end()}
}

四、Svg组件使用

比如登陆页面的form表单：svg-icon
其中，icon-class="user"对应：src/assets/icons/svg/user.svg图片

      <el-form-item prop="username"><el-inputv-model="loginForm.username"type="text"auto-complete="off"placeholder="账号"><svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" /></el-input></el-form-item>

效果