jsp页面包孕

第一种：include指令：当JSP转换成Servlet时引入指定文件 <%@ page contentType="text/html; charset=GB2312" language="java" errorPage=""%>
<%@ include file="head.jsp"%>
<%@ include file="body.jsp"%>
<%@ include file="tail.jsp"%>
第二种：<jsp:include>动作元素：当JSP页面被请求时引入指定文件
<%@ page contentType="text/html; charset=GB2312" language="java" errorPage=""%>
<jsp:include page="head.jsp"/>
<jsp:include page="body.jsp"/>
<jsp:include page="tail.jsp"/>


第二种方法可以很方便的用<jsp:param>来向所包含页传递参数，方法如下：
<%@ page contentType="text/html; charset=GB2312" language="java" errorPage=""%>
<jsp:include page="head.jsp"/>
<jsp:include page="body.jsp">
<jsp:param name="uid" value="username"/>
<jsp:param name="pwd" value="password"/>
</jsp:include>
<jsp:include page="tail.jsp"/>