JSP语法——include指令
jsp代码：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> 这是页头<br/>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> 这是页脚<br/>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>include指令(静态包含(编译时包含) 它包含的所有jsp会编译成一个servlet)</title>
</head>
<body>
<%@ include file="/public/head.jsp" %>
aaaaaaaaaaa<br/>
<%@ include file="/public/foot.jsp" %>
</body>
</html><%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>动态包含(运行时包含，会把包含的所有jsp分别生成多个servlet，尽量使用静态包含，性能好)</title>
</head>
<body>
<%
request.getRequestDispatcher("/public/head.jsp").include(request,response);
%>
<%
response.getWriter().write("aaaaaaaaaaaaaaa<br/>");
%>
<%
request.getRequestDispatcher("/public/foot.jsp").include(request,response);
%>
</body>
</html>
