vue點擊按鈕下載：

<span class='down' @click='handelDown'>
    <i class='img'></i>
</span>

handelDown() {
    window.open(this.$api._api + `/system/dowmloadDict`)
}

a標(biāo)簽下載

<span class='down' >
   <a :href='downloadUrl'>
   </a>
    <i class='img'></i>
</span>


data() {
    return {
        downloadUrl: this.$api.api + '/system/dowmloadDict'
    }
}