<%@ page contentType="text/html;charset=gb2312"%>
<%
    int i=1000;
%>
<h1>includeDeom3.jsp的i的值是 <%=i%> </h1>

<%@ page contentType="text/html;charset=gb2312"%>
<h1>你好</h1>
<% 
   int i=10;
%>
<h1>includeDeom4.jsp的i的值是 <%=i%> </h1>
 
<jsp:include page="includeDemo3.jsp"/>

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>

------解决方案--------------------
探讨

6楼的代码有效，谢谢了，哎！这个破网吧