支持ie9及以上的大多数主流浏览器的文件上传。
如果想支持多文件上传，需要自己修改formdata的值
<!DOCTYPE html>
<html>
<head>
<title>upload file</title>
</head>
<body>
<input id="upload-file" type="file">
<button id="upload-button">上传</button>
</body>
<script type="text/javascript">
document.getElementById('upload-button').onclick = function(){
var formData = new FormData();
var $ajax = new XMLHttpRequest();
if(!document.getElementById('upload-file').files[0]){
alert('no files');
return;
}
formData.append('files',document.getElementById('upload-file').files[0]);
$ajax.open('post','http://localhost:8888/fsslr-webserver/ad/fileCenter/uploadFile',true);
$ajax.upload.onprogress = function(evt){
console.log(Math.round(evt.loaded * 100 / evt.total));
}
$ajax.send(formData);
$ajax.onreadystatechange = function (){
if($ajax.readyState == 4){
if($ajax.status == 200){
alert($ajax.responseText);
return $ajax.responseText;
}else{
return "访问服务器出现错误";
}
}
}
};
</script>
</html>
服务器配置事项
