<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<button onclick="downloadFile()">Download</button>
<script>
function downloadFile() {
var request = new XMLHttpRequest();
request.responseType = "blob";
// 传入文件链接
request.open("GET", "http://124.128.28.25/20200524140900315079.pdf");
request.onload = function () {
var url = window.URL.createObjectURL(this.response);
var a = document.createElement("a");
document.body.appendChild(a);
a.href = url;
a.download = "your_download.pdf"
a.click();
}
request.send();
}
</script>
</body>
</html>