blobDownload(src){
let url = src;
let xhr = new XMLHttpRequest();
xhr.open("GET",url,true);//可使用post
//此处可设置相应请求头 token xhr.setRequestHeader("token",token)
xhr.responseType =
blobDownload(src){
let url = src;
let xhr = new XMLHttpRequest();
xhr.open("GET",url,true);//可使用post
//此处可设置相应请求头 token xhr.setRequestHeader("token",token)
xhr.responseType =