exceltoxlxstream = async function (file) {
    return new Promise(resolve => {
        if (file) {
            const reader = new FileReader();
            reader.onload = async function (e) {
                const data = new Uint8Array(e.target.result);
                const workbook = XLSX.read(data, { type: 'array', codepage: 936 });
                const fileStream = XLSX.write(workbook, { type: 'array', bookType: 'xlsx', codepage: 936 });
                const blob = new Blob([fileStream], { type: 'application/vnd.ms-excel;charset=utf-8' });
                const url = URL.createObjectURL(blob);
                // 创建隐藏的下载链接并点击
                const downloadLink = document.createElement('a');
                downloadLink.href = url;
                downloadLink.download = file.name;
                downloadLink.style.display = 'none';
                document.body.appendChild(downloadLink);
                downloadLink.click();
                document.body.removeChild(downloadLink);

                // 释放资源
                URL.revokeObjectURL(url);
                resolve(fileStream);
            };
            reader.readAsArrayBuffer(file);
        }
    });
}