vue 读取本地excel文件

本文已参与「新人创作礼」活动，一起开启掘金创作之路。

一、安装依赖

npm install xlsx --save    或    npm instatll xlsx@0.17.0 --save   // 建议安装低版本
npm install file-saver --save

二、引入

import axios from "axios";
import XLSX from "xlsx";
import transformSheets from "../scripts/read_xlsx"; //导入转制函数

三、方法

created() {
    var url = "msg.xlsx"; //放在public目录下的文件可以直接访问
    this.readExcelFile(url)
  },

readExcelFile(url) {
   axios.get(url,{responseType:'arraybuffer'})
  .then((res)=>{
    let data = new Uint8Array(res.data)
    var a = XLSX
    let wb = XLSX.read(data, {type:"array"})
    console.log('wb',wb)
    let sheets = wb.Sheets // 获取文档数据
    this.content = this.transformSheets(sheets)
    console.log('*****content-获取的excel数据*****',this.content)
  }).catch( err =>{
    this.err = err
  })
},
transformSheets(sheets){
  let content1 = []
  let tmplist = []
  for (let key in sheets){
    //读出来的workbook数据很难读,转换为json格式,参考https://github.com/SheetJS/js-xlsx#utility-functions
    tmplist.push(XLSX.utils.sheet_to_json(sheets[key]).length)
    content1.push(XLSX.utils.sheet_to_json(sheets[key]))
  }
  return content1
  console.log(tmplist)
  console.log(content1)
}

四、关键--->导入转制函数 read_xlsx.js

/* eslint-disable prettier/prettier */
const XLSX = require("xlsx");
// 将行,列转换
function transformSheets(sheets) {
    var content = [];
    var content1 = [];
    var tmplist = [];
    for (let key in sheets) {
        //读出来的workbook数据很难读,转换为json格式,参考https://github.com/SheetJS/js-xlsx#utility-functions
        tmplist.push(XLSX.utils.sheet_to_json(sheets[key]).length);
        content1.push(XLSX.utils.sheet_to_json(sheets[key]));
    }
    var maxLength = Math.max.apply(Math, tmplist);
    //进行行列转换
    for (let y in [...Array(maxLength)]) {
        content.push([]);
        for (let x in [...Array(tmplist.length)]) {
            try {
                for (let z in content1[x][y]) {
                    content[y].push(content1[x][y][z]);
                }
            } catch (error) {
                content[y].push(" ");
            }
        }
    }
    content.unshift([]);
    for (let key in sheets) {
        content[0].push(key);
    }
    return content;
}

export { transformSheets as default };