import axios from 'axios'
export default {
  post(url, param, title) {
    axios.post(url, param, { responseType: 'arraybuffer' })
      .then((res) => {
        if(res.status == "200") {
          const aLink = document.createElement("a");
          let blob = new Blob([res.data], {type: "application/vnd.ms-excel"})
          aLink.href = URL.createObjectURL(blob)
          aLink.download = title
          aLink.click()
          document.body.appendChild(aLink)
        }
      })
  }
}

（注意：此情况，后台返回的数据是以文件流的形式返回的）