前端vue使用js-xlsx导出excel的三种方法

Posted 2020-11-24 dragonKings

npm install --save xlsx file-saver

在组件里面引入

 import FileSaver from ‘file-saver‘
    import XLSX from ‘xlsx‘

第一种 其中#outTable是在el-table上定义的id

exportExcel() {
      var xlsxParam = { raw: true };//转换成excel时，使用原始的格式
      var wb = XLSX.utils.table_to_book(document.querySelector("#outTable"),xlsxParam);//outTable为列表id
      var wbout = XLSX.write(wb, {
        bookType: "xlsx",
        bookSST: true,
        type: "array"
      });
      try {
        FileSaver.saveAs(
          new Blob([wbout], { type: "application/octet-stream;charset=utf-8" }),
          "sheetjs.xlsx"
        );
      } catch (e) {
        if (typeof console !== "undefined") console.log(e, wbout);
      }
      return wbout;
}

第二种 通过数组导出excel

      var _data = [

        [ "id",    "name", "value" ],

        [    1, "sheetjs",    7262 ],

        [    2, "js-xlsx",    6969 ]

      ];
      const ws= XLSX.utils.aoa_to_sheet(_data);

      /* generate workbook and add the worksheet */
      const wb = XLSX.utils.book_new();
      XLSX.utils.book_append_sheet(wb, ws, ‘Sheet1‘);

      /* save to file */
      XLSX.writeFile(wb, ‘SheetJS.xlsx‘);

第三种通过json导出excel

exportExcel() {

var wopts = {

        bookType: ‘xlsx‘,
        bookSST: true,
        type: ‘binary‘
      };
      var workBook = {
        SheetNames: [‘Sheet1‘],
        Sheets: {},
        Props: {}
      };
      var table = [];
        for(var i=0;i<this.multipleSelection.length;i++){
          var params = {
            姓名: this.multipleSelection[i].name,
            部门: this.multipleSelection[i].department,
            职务名称: this.multipleSelection[i].titles,
            档案编号:this.multipleSelection[i].fileNum,
            校验状态:this.multipleSelection[i].verifyStatus,
            审核状态:this.multipleSelection[i].checkedStatus,
            备注:this.multipleSelection[i].checkedReason,
          }
          table[i] = params
      };
      //1、XLSX.utils.json_to_sheet(data) 接收一个对象数组并返回一个基于对象关键字自动生成的“标题”的工作表，默认的列顺序由使用Object.keys的字段的第一次出现确定
      //2、将数据放入对象workBook的Sheets中等待输出
      workBook.Sheets[‘Sheet1‘] = XLSX.utils.json_to_sheet(table);

      //3、XLSX.write() 开始编写Excel表格
      //4、changeData() 将数据处理成需要输出的格式
      FileSaver.saveAs(new Blob([this.changeData(XLSX.write(workBook, wopts))], {type: ‘application/octet-stream‘}), "sheetjs.xlsx")
    },
     changeData(s) {

    //如果存在ArrayBuffer对象(es6) 最好采用该对象
    if (typeof ArrayBuffer !== ‘undefined‘) {

      //1、创建一个字节长度为s.length的内存区域
      var buf = new ArrayBuffer(s.length);

      //2、创建一个指向buf的Unit8视图，开始于字节0，直到缓冲区的末尾
      var view = new Uint8Array(buf);

      //3、返回指定位置的字符的Unicode编码
      for (var i = 0; i != s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;
      return buf;

    } else {
      var buf = new Array(s.length);
      for (var i = 0; i != s.length; ++i) buf[i] = s.charCodeAt(i) & 0xFF;
      return buf;
    }
  },

第三种适合导出选中的数据如果选中的json数据字段都是你需要的可以用下面的方法导出

const workSheet =
  XLSX.utils.json_to_sheet(this.multipleSelection, {
    header: [‘列1‘, ‘列2‘, ‘列3‘, ‘列1‘, ‘列2‘, ‘列3‘, ‘列1‘, ‘列2‘],
    skipHeader: true// 跳过上面的标题行
  });
const ws = XLSX.utils.aoa_to_sheet(workSheet);
const wb = XLSX.utils.book_new();
XLSX.utils.book_append_sheet(wb, ws, ‘Sheet1‘);

/* save to file */
XLSX.writeFile(wb, ‘SheetJS.xlsx‘);