纯前端实现导入excel数据

准备工作 - 下载 xlsx

npm install xlsx

下面直接上代码👇

<template><div><input type="file" accept=".xlsx, .xls" @change="handleClick"></div>
</template><script lang='ts' setup>
import * as XLSX from 'xlsx'const handleClick = async (e) => {const res = await readerData(e.target.files[0])console.log(res); // 获取的数据格式 { header: [], results: [{}] }
}// 纯前端导入excel
const readerData = (rawFile) => {return new Promise((resolve, reject) => {// 创建一个文件读取的实例const reader = new FileReader()reader.onload = e => { // onload是加载完实例后执行（异步）const data = e.target.resultconst workbook = XLSX.read(data, { type: 'array' })// 获取一张表的表名const firstSheetName = workbook.SheetNames[0]// 根据表名拿到表里面的内容const worksheet = workbook.Sheets[firstSheetName]// 解析成jsonconst results = XLSX.utils.sheet_to_json(worksheet)// 获取表头数据const header = getHeaderRow(worksheet)resolve({ header, results })}// 读取成一个Buffer格式文件reader.readAsArrayBuffer(rawFile)})
}// 获取表头数据
const getHeaderRow = (sheet) => {const headers = []const range = XLSX.utils.decode_range(sheet['!ref'])let Cconst R = range.s.r/* start in the first row */for (C = range.s.c; C <= range.e.c; ++C) { /* walk every column in the range */const cell = sheet[XLSX.utils.encode_cell({ c: C, r: R })]/* find the cell in the first row */let hdr = 'UNKNOWN ' + C // <-- replace with your desired defaultif (cell && cell.t) hdr = XLSX.utils.format_cell(cell)headers.push(hdr)}return headers
}
</script>