打印的data：

<template>
    <div class="index">
        <input type="file" @change="importFile(this)" id="imFile" style="display: none"
            accept="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/vnd.ms-excel"/>
        <Button type="primary" @click="uploadFile">导入</Button>
    </div>
</template>

<script>
// 引入xlsx
var XLSX = require("xlsx");
export default {
    name: "Index",
    data() {
        return {
            fullscreenLoading: false, // 加载中
            imFile: "", // 导入文件el
            errorMsg: "", // 错误信息内容
        };
    },
    mounted()