vue2中引入svg

1.安装 svg-sprite-loader

npm install svg-sprite-loader --save

2. vue.config.js配置

// vue.config.js
const path = require('path')
const resolve = dir => {
    return path.join(__dirname, dir)
}
module.exports = {
chainWebpack: (config) => {
       // svg图标加载
config.module.rule('svg').exclude.add(resolve('src/icons')).end()
config.module.rule('icons').test(/\.svg$/).include.add(resolve('src/icons')).end().use('svg-sprite-loader').loader('svg-sprite-loader').options({symbolId: 'icon-[name]'}).end()
  },
}

3. 在views文件夹下创建svgIcon文件夹，创建index.vue文件

<template>
    <svg :class="svgClass" aria-hidden="true" v-on="$listeners">
      <use :href="iconName" />
    </svg>
  </template>
  
  <script>
  // doc: https://panjiachen.github.io/vue-element-admin-site/feature/component/svg-icon.html#usage
  
  export default {
    name: 'SvgIcon',
    props: {
      iconClass: {
        type: String,
        required: true
      },
      className: {
        type: String,
        default: ''
      }
    },
    computed: {
      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>

4. 在src文件夹下添加icons文件夹 (1) icons文件夹下建index.js

import Vue from 'vue'
import SvgIcon from '../views/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)

(2)创建svgo.yml

# replace default config

# multipass: true
# full: true

plugins:

  # - name
  #
  # or:
  # - name: false
  # - name: true
  #
  # or:
  # - name:
  #     param1: 1
  #     param2: 2

- removeAttrs:
    attrs:
      - 'fill'
      - 'fill-rule'

（3）需要使用的svg放入svg文件夹中

5. 最后在main.js引入icon

import '@/icons' // icon

6.使用

  <svg-icon icon-class="mysql"></svg-icon>