excel与json转换

import XLSX from 'xlsx'
// 引入之后 下面是转json和excel
_toJson (e) {
      
      let file = e.target.files[0]
      let reader = new FileReader()
      reader.onload = (event) => {
        console.log(event);
        let data = event.target.result;
        var workbook = XLSX.read(data, {
          type: 'binary'
        });
        let resultArray = []
        workbook.SheetNames.forEach(function (sheetName) {
          console.log('workbook.Sheets[sheetName]', workbook.Sheets[sheetName]);
          const data = XLSX.utils.sheet_to_json(workbook.Sheets[sheetName], { header: 1 });
          console.log('data', data);
          let mainData = data.slice(1)
          if (mainData.length > 0) {
            for (let row = 0; row < mainData.length; row++) {
              let rowData = {}
              for (let col = 0; col < data[0].length; col++) {
                rowData[data[0][col]] = mainData[row][col] || ''
              }
              resultArray.push(rowData)
            }
          } else {
            alert('至少需要一行有效数据')
          }
        })
        console.log('resultArray', resultArray);

      }
      reader.readAsBinaryString(file);

    },
    _toExcel () {
      let data = [{ "业务政策": 1, "产品名称": 2, "证件号码": 5 }, { "产品名称": 2 }]
      const ws = XLSX.utils.json_to_sheet(data);
      const wb = XLSX.utils.book_new();
      XLSX.utils.book_append_sheet(wb, ws, "People");
      XLSX.writeFile(wb, "sheetjs.xlsx");
    }