VUE 前端读取excel表格内容

  <el-upload
      class="upload-demo"
      :action="''"
      :show-file-list="false"
      :auto-upload="false"
      :before-upload="beforeUpload"
      :on-success="handleSuccess"
      :on-change="handleFileChange"
      :accept="acceptString"
      name="file"
  >
    <el-button class="opt-row-btn" slot="trigger">上传表格</el-button>
  </el-upload>

    async handleFileChange(file) {
      console.log(file);
      const dataBinary = await new Promise((resolve) => {
        // Web API构造函数FileReader，可实例化对象，去调用其身上方法，去读取解析文件信息
        const reader = new FileReader();
        reader.readAsBinaryString(file.raw); // 读取raw的File文件
        reader.onload = (ev) => {
          // console.log("文件解析流程进度事件", ev);
          resolve(ev.target.result); // 将解析好的结果扔出去，以供使用
        };
      });
      const workBook = read(dataBinary, {type: 'binary', cellDates: true});
      const firstWorkSheet = workBook.Sheets[workBook.SheetNames[0]];
      // 分为第一行的数据，和第一行下方的数据
      const header = this.getHeaderRow(firstWorkSheet);
      console.log('读取的excel表头数据（第一行）', header);
      const data = utils.sheet_to_json(firstWorkSheet);
      console.log('读取所有excel数据', data);

      this.exportVisible = false;
    },
    getHeaderRow(sheet) {
      const headers = []; // 定义数组，用于存放解析好的数据
      const range = utils.decode_range(sheet['!ref']); // 读取sheet的单元格数据
      let C;
      const R = range.s.r;
      /* start in the first row */
      for (C = range.s.c; C <= range.e.c; ++C) {
        /* walk every column in the range */
        const cell = sheet[utils.encode_cell({c: C, r: R})];
        /* find the cell in the first row */
        let hdr = 'UNKNOWN ' + C; // <-- replace with your desired default
        if (cell && cell.t) hdr = utils.format_cell(cell);
        headers.push(hdr);
      }
      return headers; // 经过上方一波操作遍历，得到最终的第一行头数据
    },