vue前端 多次同步请求一个等一个下载

sleep(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
},
/** 导出按钮操作 */
 handleExport() {
  if (this.ids.length === 0) {
    this.$message.warning("请至少选择一条记录进行导出");
    return;
  }

  this.$confirm('是否确认导出所选交接记录?', "警告", {
    confirmButtonText: "确定",
    cancelButtonText: "取消",
    type: "warning"
  }).then(async () => {
      try {
        this.$message.info("正在导出...")
          for (const id of this.ids) {
            await this.sleep(1000)
            await exportTxJjjlExcel(id).then(response => {
              this.download(response,id);
            });
          }
        this.$message.success('导出完成');
      } catch (error) {
        this.$message.error(`导出失败: ${error.message}`);
      } finally {
      }


  });
},

// 下载文件
download(res,id) {
  // 检查响应是否为JSON格式的错误信息

  let find = this.jjjlList.find((e)=>e.ID==id);
  console.log("res",res)
  if (res.type === 'application/json') {
    // 读取JSON错误信息
    const reader = new FileReader();
    reader.onload = e => {
      try {
        const errorInfo = JSON.parse(e.target.result);
        this.$message.error(`导出失败: ${errorInfo.msg || '未知错误'}`);
      } catch (error) {
        this.$message.error('导出失败，请联系管理员');
      }
    };
    reader.readAsText(res);
    return;
  }

  // 正常处理Excel文件下载
  const blob = new Blob([res], { type: 'application/vnd.ms-excel' });
  const link = document.createElement('a');
  link.href = URL.createObjectURL(blob);
  link.download = `${this.parseTime(find.JBRQ,'{y}-{m}-{d}')}_${find.JBBYB}_${new Date().getTime()}.xlsx`;
  link.click();
  URL.revokeObjectURL(link.href);
}