url为文件的src地址
url必须符合同源策略或者url的接口地址允许跨域,否则浏览器会报跨域错误
axios.get(data.url ,{
responseType: ‘blob’,
})
.then( response=>{
let blob = new Blob([response.data]);
let url = window.URL.createObjectURL(blob); // 创建 url 并指向 blob
let a = document.createElement(‘a’);
a.href = url;
a.download = data.fileName;
a.click();
window.URL.revokeObjectURL(url); // 释放该 url
});