点击下载按钮根据需要的id调接口拿到返回需要下载的文件

再看返回的数据结构
数组中一个对象，就是一个文件，多个对象就是多个文件

下载函数

 // 下载tableDownload(row) {getuploadInventoryDownload({ sysBatch: row.sysBatch, fileName: row.fileName }).then((res) => {console.log(res)res.forEach((file, index) => {// elink.download = decodeURI(file.headers['Content-Disposition'][0].split(';')[1].split('=')[1])const name = decodeURI(file.headers['Content-Disposition'][0].split(';')[1].split('=')[1])const name2 = name.slice(8)console.log(name.slice(8))const blob = this.buildBlob(file.body)this.downLoadFile(blob, name2)})})},downLoadFile(blob, filename) {const link = document.createElement('a')link.href = window.URL.createObjectURL(blob)link.download = filenamedocument.body.appendChild(link)link.click()URL.revokeObjectURL(link.href) // 释放URL 对象document.body.removeChild(link)},buildBlob(data) {const raw = window.atob(data)const rawLength = raw.lengthconst uInt8Array = new Uint8Array(rawLength)for (let i = 0; i < rawLength; ++i) {uInt8Array[i] = raw.charCodeAt(i)}return new Blob([uInt8Array])},