封装基于el-upload的上传(文件)模块

<template>
  <div class="warpper">
    <div class="flex-center padding-top-20">
      <el-upload
        ref="uploadRef"
        :limit="limit"
        :accept="accept"
        :headers="uploadConfig.headers"
        :action="baseUrl + uploadConfig.uploadUrl"
        :disabled="uploadConfig.isUploading"
        :on-progress="handleFileUploadProgress"
        :on-success="handleFileSuccess"
        :on-error="handleFileError"
        :on-change="handleFileChange"
        :before-upload="beforeUploadFile"
        :auto-upload="autoUpload"
        drag
        :name="uploadConfig.name"
        :data="uploadConfig.params"
      >
        <i class="el-icon-upload"></i>
        <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
        <div class="el-upload__tip text-center" slot="tip">
          <span>仅允许导入xls、xlsx格式文件。</span>
        </div>
      </el-upload>
    </div>
    <div class="flex-center">
      <el-button type="text" @click="downloadTemp"