下载Excle

 getExcle(){
   getStrengthExcle().then(data => {
           let blob = new Blob([data], { type: 'application/vnd.ms-excel' })
           let objectUrl = window.URL.createObjectURL(blob) // 创建URL
           let link = document.createElement('a')
           link.style.display = 'none'
           link.href = objectUrl
           link.download = '基地实力情况.xls' // 自定义文件名
           document.body.appendChild(link)
           link.click() // 下载文件
           window.URL.revokeObjectURL(objectUrl) // 释放内存
         })
 },