代码语言：javascript复制
JSP 页面代码：
<form action="#" name="uploadForm" method="post" enctype="multipart/form-data">
<input type="file" name="upload" id="upload" onchange="loadImageFile(event)">
<img id="image" src="" >
<input type="submit" value="上传">
</form>
JS 代码：
function loadImageFile(event)
{
var image = document.getElementById('image');
image.src = URL.createObjectURL(event.target.files[0]);
};
</pre> 
