vue + axios get下载文件功能

<button class="os_myProduct_td6Div5Btn2" @click.s="downloadReport(item,index)">下载当天报表</button>

methods:{
 downloadReport(item,index){
 let date = item.plans[this.daysIndex[index]]
 let url = '/Ecp.Export.exportXls.jdn?entityId='+item.FId+'&date='+date.FDeparture_date+'&token=' + sessionStorage.getItem("token")
 this.axios({
 method:'get',
 url:url,
 responseType:'blob',
 })
 .then((data) => {
 if (!data) {
  return
 }
 debugger
 let url = window.URL.createObjectURL(data.data)
 let link = document.createElement('a')
 link.style.display = 'none'
 link.href = url
 link.setAttribute('download', 'excel.xls')
 document.body.appendChild(link)
 link.click()
 })
 },
 }