vue 前端一键导出excel文件并附带表格样式

news2024/10/6 6:03:38

1、安装xlsx、xlsx-style、file-saver三个包

//xlsx与file-saver指定版本安装，解决默认安装utils未定义的问题
npm install --save xlsx@0.17.0 
npm install --save file-saver@2.0.5
npm install xlsx-style --save

2、在使用的页面引入

import XLSX from 'xlsx' // 导入导出都要用到的插件
import FileSaver from 'file-saver' // 导出需要用到的插件
import XLSXStyle from 'xlsx-style';//导出引入样式

3、封装导出处理函数

//导出excel文件-并修改表头样式
export function exportExcelData(data,titles,filename){
  Object.prototype.toString.call();
  let proV = toString.call(titles[0]);
  let headerValue = proV === '[object Object]' ? toArray(titles,'value') : titles;//表头value
  let headerName = proV === '[object Object]' ? toArray(titles,'name') : titles;//表头名称

  let dataArr = [headerName];//表格数据
  for (let i = 0; i< data.length; i++){
    let arr = headerValue.map((item,index)=>{
      return data[i][item];
    });
    dataArr.push(arr)
  }
  var sheet = XLSX.utils.json_to_sheet(dataArr, {
    skipHeader: true,
  });
  /**设置标题头背景色 */
  for (const key in sheet) {
    // 第一行，表头
    if (key.replace(/[^0-9]/ig, '') === '1') {
      sheet[key].s = {
        fill: { //背景色
          fgColor: {
            rgb: 'C0C0C0'
          }
        },
        font: {//字体
          name: '宋体',
          sz: 12,
          bold: true
        },
        border: {//边框
          bottom: {
            style: 'thin',
            color: '#9a9a9a'
          }
        },
        alignment:{
          horizontal:'center' //水平居中
        }
      }
    }else if (Number(key.replace(/[^0-9]/ig, '')) > 1){
      sheet[key].s = {
        alignment:{
          horizontal:'center' //水平居中
        }
      }
    }
    let colsP = headerName.map((item,index)=>{
      let obj = {
        'wch': 20 //列宽
      }
      if (item == '序号'){
        obj['wch'] = 10
      }else {
        obj['wch'] = 18
      }
      return obj;
    })
    sheet['!cols']  = colsP;//列宽
  }
  openDownload(sheet2blob(sheet,filename), filename+".xlsx");
}
function sheet2blob(sheet, sheetName) {
  let wb = XLSX.utils.book_new();
  wb.SheetNames.push(sheetName)
  wb.Sheets[sheetName] = sheet;
  var wbout = XLSXStyle.write(wb, { bookType: '', bookSST: false, type: 'binary' })
  var blob = new Blob([s2ab(wbout)], { type: "" },sheetName);
  // 字符串转ArrayBuffer
  function s2ab(s) {
    var buf = new ArrayBuffer(s.length);
    var view = new Uint8Array(buf);
    for (var i = 0; i != s.length; ++i) view[i] = s.charCodeAt(i) & 0xff;
    return buf;
  }
  return blob;
}
function openDownload(url, saveName) {
  if (typeof url == "object" && url instanceof Blob) {
    url = URL.createObjectURL(url); // 创建blob地址
  }
  var aLink = document.createElement("a");
  aLink.href = url;
  aLink.download = saveName || ""; // HTML5新增的属性，指定保存文件名，可以不要后缀，注意，file:///模式下不会生效
  var event;
  if (window.MouseEvent) event = new MouseEvent("click");
  else {
    event = document.createEvent("MouseEvents");
    event.initMouseEvent(
      "click",
      true,
      false,
      window,
      0,
      0,
      0,
      0,
      0,
      false,
      false,
      false,
      false,
      0,
      null
    );
  }
  aLink.dispatchEvent(event);
}

4、vue页面引入使用

import {exportExcelData} from '@/utils/index.js'

methods方法里面的代码

// 导出按钮触发事件
//this.tableDataOne：表格数据；this.tableHeadOne：表头；"绿色交易合同信息管理"：导出文件名称
      getExport() {
        exportExcelData(this.tableDataOne,this.tableHeadOne,"绿色交易合同信息管理");
      },