btnExport() {
            console.log('导出')
            /**
             *
             * @params
             * exportEnum	导出种类,
             */
            // let params = {
            //     exportEnum: val
            // }
            let config = {
                responseType: 'blob'
            }
            // 根据你的内容是否填加入参params
            this.$axios
                .get(MAINURL + '/materialRrewindRecord/downloadRecordExcel', config)
                .then(res => {
                    console.log(res)
                    // console.log(window.decodeURI(res.headers['content-disposition'].split('=')[1], 'UTF-8'))
                    const url = window.URL.createObjectURL(
                        new Blob([res.data], {
                            type: 'application/vnd.ms-excel,charset=utf-8'
                        })
                    )
                    const link = document.createElement('a')
                    //  window.decodeURI(res.headers['content-disposition'].split('=')[1], 'UTF-8')
                    const fileName = 'window.decodeURI(res.headers['content-disposition'].split('=')[1], 'UTF-8')'
                    link.style.display = 'none'
                    link.href = url
                    link.setAttribute('download', fileName)
                    //注意：上面的self.$route.query.type是你要下载的文件名加文件后缀，例如test.docx
                    document.body.appendChild(link)
                    link.click()
                    URL.revokeObjectURL(link.href) // 释放URL对象
                    document.body.removeChild(link)
                    this.promptTitle = '导出成功'
                    this.promptStatus = true
                    this.isPrompt = true
                    this.clearDsq()
                })
                .catch(err => {
                    console.log(err)
                })
        },