关于文件导出vue+iview

 setExcelLogFn: async function(){
      let this_ = this;
      
      var obj={
        dt_json:JSON.stringify({
          advance:[]
        }),
        time_range:JSON.stringify(this.time_range)
      };
     
      let info = await sendExcel(obj);
//关键代码
      const blob = new Blob([info.data], {
        type: 'application/octet-stream'
      });
      let fileName = this.formBase.title+'.xls';
      if ('download' in document.createElement('a')) { // 非IE下载
          const elink = document.createElement('a')
          elink.download = fileName
          elink.style.display = 'none'
          elink.href = URL.createObjectURL(blob)
          document.body.appendChild(elink)
          elink.click()
          URL.revokeObjectURL(elink.href) // 释放URL 对象
          document.body.removeChild(elink)
        } else { // IE10+下载
          navigator.msSaveBlob(blob, fileName)
        };
    },

export const sendExcel = async (data) => {
  return await request({
    url:'/xxx/xxx/xxxx',  //向后台请求的地址
    method: 'post',
    data: data,
    responseType: 'arraybuffer'
  })
}