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<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@taglib uri="/struts-tags" prefix="s" %>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Hello World</title>
</head>
<body>
<div>
<h1>
<%-- <s:property value="message"/> --%>
</h1>
</div>
<hr/>
<div>
<form action="helloWorld.action" method="post">
<input name="name" type="text">
<input name="submit" value="提交">
</form>
<c:if test="${empty user }">abc</c:if>
</div>
</body>
</html>