<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src="jquery-2.1.1.min.js"></script>
<script>
$(function(){
$('.file').change(function(){
$filePath=URL.createObjectURL(this.files[0]);
$('img').attr('src',$filePath);
})
})
</script>
</head>
<body>
<input type="file" class="file">
<br>
<img src="" alt="">
</body>
</html>
Front-end style
<img height="30px" src="${pageContext.request.contextPath}/static/imgs/${c.pic_name}" class="imgs">
<input type=file id=browsefile style="visibility:hidden" onchange=filename.value=event.target.files[0].name class="file">
<input type=textfield id=filename>
<input type=button id=filebutton value=browser onclick="browsefile.click()">
Very practical, watching the changing needs of it