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<!DOCTYPE html>
<%@ page language="java" pageEncoding="utf-8"%>
<html>
<head>
<title>MyHtml.html</title>
<meta http-equiv="Content-Type" content="text/html; charset=GBK" />
<script src="jquery.js" type="text/javascript"></script>
</head>
<body>
<form action="./test" method="get" enctype ="multipart/form-data">
<input type="text" name="name" value=""/><br/>
<input type="file" id="path" name="file" />
<fieldset style="width:80px;height:80px">
<legend>预览</legend>
<img id="imge" width="50px" height="50px" style="visibility:hidden" />
</fieldset>
<input type="submit" value="submit"/>
</form>
</body>
<script type="text/javascript">
$("#path").change(function(e){
var reader = new FileReader();
var file = this.files[0];
reader.onloadstart = function (e) {};
reader.onprogress = function (e) {};
reader.onabort = function (e) {};
reader.onerror = function (e) {};
reader.onload = function (e) {
$("#imge").attr("style","visibility:visible");
$("#imge").attr("src", e.target.result);
};
reader.readAsDataURL(file);
});
</script>
</html>
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原文地址：http://www.cnblogs.com/wbjgogogo/p/5909866.html
