vue3采用xlsx库实现本地上传excel文件功能

npm install xlsx

<template>
  <div>
    <input type="file" class="file-btn hoverPointer" accept=".xls,.xlsx"

                            @change="changeExcel($event)" />
    <div v-if="tableData.length > 0">
      <table>
        <thead>
          <tr>
            <th v-for="header in headers" :key="header">{{ header }}</th>
          </tr>
        </thead>
        <tbody>
          <tr v-for="(row, index) in tableData" :key="index">
            <td v-for="cell in row" :key="cell">{{ cell }}</td>
          </tr>
        </tbody>
      </table>
    </div>
  </div>
</template>

<script>
import { ref } from 'vue';
import * as XLSX from 'xlsx';

export default {
  setup() {
    const headers = ref([]);
    const tableData = ref([]);

    const changeExcel= (event) => {

        const files = e.target.files

        if (files.length <= 0) {

            return false

        } else if (!/\.(xls|xlsx)$/.test(files[0].name.toLowerCase())) {

            console.log('上传格式不正确，请上传xls或者xlsx格式')

            return false

        }

      const reader = new FileReader();
      reader.onload = (e) => {
        const data = e.target.result;
        const workbook = XLSX.read(data, { type: 'binary' });
        const sheetName = workbook.SheetNames[0];
        const worksheet = workbook.Sheets[sheetName];
        const json = XLSX.utils.sheet_to_json(worksheet, { header: 1 });

        headers.value = json[0]; // 表头
        tableData.value = json.slice(1); // 表格数据
      };
      reader.readAsBinaryString(files);
    };

    return {
      headers,
      tableData,
      handleFileUpload,
    };
  },
};
</script>

<style scoped>
table {
  width: 100%;
  border-collapse: collapse;
}
th, td {
  border: 1px solid #ccc;
  padding: 8px;
  text-align: left;
}
</style>

<template>
  <div id="app">
    <ExcelUpload />
  </div>
</template>

<script>
import ExcelUpload from './components/ExcelUpload.vue';

export default {
  name: 'App',
  components: {
    ExcelUpload,
  },
};
</script>