angular2利用iframe下载文件

/**

  * 附件下载

  * @param attachNoList 附件内码

  */

  public static attachDownload(attachNoList) {

    // 下载链接

    let downloadURL = "";

    // 构建下载链接

    if (attachNoList.length == 1) { // 单个文件下载

      downloadURL = "/pms/v1/common/fundFile/file/" + attachNoList[0] + "?token=" + sessionStorage.getItem('token');

    } else { // 多个文件下载

      downloadURL = "/pms/v1/common/fundFile/files?token=" + sessionStorage.getItem('token') + '&attachNos=' + attachNoList.join(',');

    }

// 下载

let iframe = window['$']( " < iframe id = ' downloadiframe ' > " );

    iframe.attr('style', 'display:none');

    iframe.attr('src', environment.server + downloadURL);

    window['$']('body').append(iframe);

    setTimeout("$('#downloadiframe').remove()", 60000);

  }