请求接口类型blob,下载文件

axiosGet () {
      var This = this
      var url = '/group1/M00/00/21/MejEvGOX_zOAL2kiAAAAUhB5Iqg138.txt?token=895acb60323e38e6d85b5c9a82466b61&ts=1670934451'
      axios.get(url, {responseType: 'blob'})
        .then((response) => {
          console.log('跨域，设置返回类型', response)
          This.handleExport(response.data)
        })
    },
    handleExport (data) {
      // 动态创建iframe下载文件
      let fileName = 'test' // this.selectedTabelRow[0].dirName
      if (!data) {
        return
      }
      let blob = new Blob([data], { type: 'application/octet-stream' })
      if ('download' in document.createElement('a')) {
        // 不是IE浏览器
        let url = window.URL.createObjectURL(blob)
        let link = document.createElement('a')
        link.style.display = 'none'
        link.href = url
        link.setAttribute('download', fileName)
        document.body.appendChild(link)
        link.click()
        document.body.removeChild(link) // 下载完成移除元素
        window.URL.revokeObjectURL(url) // 释放掉blob对象
      } else {
        // IE 10+
        window.navigator.msSaveBlob(blob, fileName)
      }
    },