多个空格<span style="width:50px;"></span>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%
String username=(String)session.getAttribute("username");
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>OA系统用户数据</title>
</head>
<body>
<a href="http://www.w3school.com.cn">数据检索</a> <a href="http://www.w3school.com.cn">数据录入</a>
</body>
</html>
原文：http://strongdady.blog.51cto.com/12535764/1894205