ant design upload組件的beforeUpload阻止默認上傳行為

  const onImportExcel = (file) => {
    return new Promise(async (resolve, reject) => {
 
      ...  //要執行的語句
        return reject(false);  //加上這個就會阻止默認上傳
     
    });
  };
    <Upload
          name="file"
          className="avatar-uploader"
          showUploadList={false}
          beforeUpload={onImportExcel}
          accept=".xlsx,.xls,.xlt"
        >
          <Button type="primary" icon={<DownloadOutlined />}>
            導入
          </Button>
        </Upload>