//数据转换为文件下载
                    var elink = document.createElement('a')
                    elink.download = '文件名称.zip'
                    elink.style.display = 'none'
                    var blob = new Blob([res.data], { type: 'application/zip' })
                    elink.href = URL.createObjectURL(blob)
                    document.body.appendChild(elink)
                    elink.click()
                    document.body.removeChild(elink)