关于javascript:xlsx使用小计

upload_excel(e) {      let fileReader = new FileReader();      fileReader.onload = async (event) => {        var workbook = XLSX.read(event.target.result, { type: 'binary' });        console.log(workbook);        let json = XLSX.utils.sheet_to_json(workbook.Sheets.Sheet1, { range: 1, dateNF: 'FMT 22' });        console.log(this);        let data = json.map((temp) => {          switch (temp['号牌品种']) {            case '大型汽车':              var type = '01';              break;            case '挂车':              var type = '15';              break;            case '小型汽车':              var type = '02';              break;          }          switch (temp['是否解决']) {            case '未解决':              var handle = '1';              break;            case '已解决':              var handle = '3';              break;          }          return {            type: type,            chepai: temp['号牌号码'],            wf_time: this.formatDate(temp['守法工夫']),            wf_address: temp['守法地点'],            content: temp['违法行为'],            handle: handle,            pay_type: temp['缴款状态'] == '未交款' ? 0 : 1,          };        });        let result = await create({ data: data });        if (result.err == 0) {          this.tableRef.current.reload();          message.success(result.msg);        } else {          message.success(result.msg);        }      };      fileReader.readAsBinaryString(e.file); //二进制  }