//创建内存中的表单对象
var
form =
new
FormData();
//向其中添加要传输的数据
form.append(
"参数名"
, 参数值);
axios.post(downloadUrl, form
, { responseType: 'blob'
}).then(res => {
let blob = res.data
let reader = new FileReader()
reader.readAsDataURL(blob)
reader.onload = (e) => {
let a = document.createElement('a')
a.download = '文件名'
a.href = e.target.result
document.body.appendChild(a)
a.click()
document.body.removeChild(a) }
})