nodejs 使用 exceljs 库读取 execl 或写入 execl 数据后保存文件

安装库 exceljs

npm i exceljs

读取execl

const exceljs = require('exceljs')

const workbook = new exceljs.Workbook()
await workbook.xlsx.readFile('test.xlsx')
// 读取第一个工作表
const worksheet = workbook.worksheets[0]
// 遍历工作表的每一行
worksheet.eachRow((row, rowNumber) => {
  console.log(`Row ${rowNumber}: ${JSON.stringify(row.values)}`)
})

写入execl

const exceljs = require('exceljs')
const fs = require('fs')

const data = [
  {
    name: '张',
    age: 18,
    height: '180cm'
  },
  {
    name: '李',
    age: 19,
    height: '185cm'
  }
]

;(async () => {
  const workbook = new exceljs.Workbook()
  const worksheet1 = workbook.addWorksheet('Sheet 1')
  const worksheet2 = workbook.addWorksheet('Sheet 2')
  worksheet1.addRow(['姓名', '年龄', '身高'])
  data.forEach((row) => {
    worksheet1.addRow(Object.values(row))
  })
  worksheet2.addRow(['学校', '年级', '班级'])

  const title_name = 'test.xlsx'
  fs.writeFileSync(title_name, '')
  const excelFileStream = fs.createWriteStream(title_name)
  await workbook.xlsx.write(excelFileStream)
  excelFileStream.end()
})()

exceljs文档

https://github.com/exceljs/exceljs/blob/HEAD/README_zh.md