//Calsquare.jsp
<%@ page language="java" pageEncoding="utf-8"%>
<html>
<head>
</head>
<body>
<jsp:include page="square.jsp">
<jsp:param value="17" name="number"/>
</jsp:include>
</body>
</html>
//square.jsp
<%@page language="java" pageEncoding="utf-8"%>
<html>
<head>
</head>
<body>
<%
int number= Integer.parseInt(request.getParameter("number"));
out.println(number+"的平方是:"+number*number);
%>
</body>
</html>
//