<input type="file">这个控件在不同的浏览器下，显示出的效果如下：
为了达到样式统一，解决办法如下：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<style type="text/css">
*
{
margin: 0;
padding: 0;
}
body
{
margin: 30px;
}
.upload1 {
position: relative;
width: 260px;
height: 30px;
}
.ipt_text {
width: 174px;
height: 24px;
line-height: 24px;
padding: 2px;
border: 1px solid #aaa;
}
.btn {
width: 70px;
height: 30px;
line-height: 30px;
border: 1px solid #aaa;
}
.upload_file1 {
position: absolute;
left: 0;
top: 0;
width: 260px;
height: 30px;
line-height: 30px;
opacity: 0;
filter: alpha(opacity : 0);
}
</style>
</head>
<body>
<div class="upload1">
<input type="text" class="ipt_text" id="file_text" />
<input type="button" class="btn" value="浏 览" />
<input type="file" class="upload_file1" size="26" onchange="document.getElementById('file_text').value=this.value" />
</div>
</body>
</html>
