使用JavaScript进行文件下载

通过创建 a 标签进行下载

后端返回数据：

{
    "result": {
        "fileName":"xxxx.xls",
        "fileData":"data:application/vnd.ms-excel;base64,0M8R4KGxGuEAAAAAAAAAAAAAAAAAAAAAOwADAP7/CQAGAAAAAAAAAAAAAAABAAAAPgAAAAAA....."
    }
}

前端处理：

/* 模拟 a 标签的点击下载*/
let {result} = response
let {fileName, fileData} = result

let a = document.createElement("a")
a.href = fileData
a.download = fileName

document.body.appendChild(a)

a.click()
a.remove()