vue下载文件流

arr(data).then(res=>{
let blob = new Blob([res], {
type: ‘’,
});
let url = window.URL.createObjectURL(blob);
const link = document.createElement(‘a’); // 创建a标签
link.href = url;
link.download = id+‘.mp4’;
link.click();
URL.revokeObjectURL(url); // 释放内存
})
接口添加responseType:‘blob’,