axios处理请求返回流格式的文件

流文件只需处理对格式即可

Axios({
  url: url,
  method: 'get',
  params: {},
  responseType: 'blob' // 改参数会以blob流格式返回
}).then((res) => {
  let blob = new Blob([res.data])
  let url = URL.createObjectURL(blob)
  // 下载该blob链接
  downloadFile(url, 'abc.text')
})

// 下载方法
function downloadFile (downUrl, fileName) {
  const aLinkUrl = document.createElementNS('http://www.w3.org/1999/xhtml', 'a')
  aLinkUrl.href = downUrl
  aLinkUrl.download = fileName
  const clickAlink = (obj) => { // 模拟点击
    const ev = document.createEvent('MouseEvents')
    ev.initMouseEvent('click', true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null)
    obj.dispatchEvent(ev)
  }
  clickAlink(aLinkUrl)
}