Vue 3: how to load local SVG as icons

I am a newbie on Vue. I searched various replies in stackoverflow, seems no good answer got. The SVG Icon couldn’t be rendered. Can anyone help me to figure this out?

my purpose is to use a component to load the svg more conveniently, instead of loading it one by one

all my svg are saved in /icons/svg/ folder, /icons/index.js:

import SvgIcon from '@/components/SvgIcon'

const req = require.context('./svg', false, /\.svg$/)
const requireAll = requireContext => requireContext.keys().map(requireContext)
requireAll(req)

export default (app) => {
    app.component('svg-icon', SvgIcon)
}

/components/SvgIcon/index.vue

<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>

main.js

import { createApp } from 'vue'
import App from './App.vue'
import router from '@/router/router'
import axios from 'axios'
import ElementPlus from 'element-plus'
import 'element-plus/dist/index.css' 
import '@/icons'

const app = createApp(App)
app.use(ElementPlus)

axios.defaults.baseURL = 'http://0.0.0.0:8880'
app.use(router, axios).mount('#app')

landing index.vue:

<template>
  <span class="svg-container">
    <svg-icon icon-class="user" /> 
  </span>  
</template>