JSP | 基础 | JSP行为 | incline && forward

语法	描述
jsp:include	用于在当前页面中包含静态或动态资源
jsp:forward	从一个JSP文件向另一个文件传递一个包含用户请求的request对象

index.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<%
	String side = request.getParameter("side");
	if(side == null) {
%>
	<jsp:forward page="index.jsp">
		<jsp:param name="side" value="10"/>
	</jsp:forward>
<%
	}
	int l = Integer.parseInt(side);
%>
<h3>实验三：计算立方</h3>
<jsp:include page="page1.jsp">
	<jsp:param name="side" value="<%=l %>" />
</jsp:include>
</body>
</html>

page1.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<%
	String side = request.getParameter("side");
	int l = Integer.parseInt(side);
%>

<%=side %>的立方是：
<%= l*l*l %>
</body>
</html>