NitroX?looks?for?a?meta?tag?to?determin?the?charset?that?should?be?used?to?encode?the?page?file.?The?page?directive?is?usually?used?to?determin?the?charset?used?by?the?server?to?serve?the?page?to?the?browser.?These?2?are?not?the?same?(for?good?reasons).?
So,?try?something?like:?
<meta?http-equiv="Content-Type"?content="text/html;?charset=UTF-8"?/>?
M7?Support
<%@?page?language="java"?pageEncoding="UTF-8"%>
<!DOCTYPE?HTML?PUBLIC?"-//W3C//DTD?HTML?4.01?Transitional//EN">
<html>
??<head>
????<title>下部框架页</title>
????<meta?http-equiv="Content-Type"?content="text/html;?charset=UTF-8"?>?
????<meta?http-equiv="pragma"?content="no-cache">
????<meta?http-equiv="cache-control"?content="no-cache">
????<meta?http-equiv="expires"?content="0">
。。。。。。。。。。
<%@?page?language="java"?pageEncoding="UTF-8"%>
<%@?page?import="jbc.util.WebHelper"?%>
<%@?include?file="resource.jsp"%>

<!DOCTYPE?HTML?PUBLIC?"-//W3C//DTD?HTML?4.01?Transitional//EN">
<html:html?lang="true">
??<head>
??
????<html:base?/>???
????
????<title>desktop.jsp</title>
????<meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?>?
????<meta?http-equiv="pragma"?content="no-cache">
????<meta?http-equiv="cache-control"?content="no-cache">
????<meta?http-equiv="expires"?content="0">????
。。。。。。。。。。。。
<%@?page?language="java"?pageEncoding="UTF-8"%>
<%@?page?import="jbc.util.WebHelper"?%>
<%@?include?file="resource.jsp"%>

<!DOCTYPE?HTML?PUBLIC?"-//W3C//DTD?HTML?4.01?Transitional//EN">
<html:html?lang="true">
??<head>
????<title>desktop.jsp</title>
????<meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?>?
????<meta?http-equiv="pragma"?content="no-cache">
????<meta?http-equiv="cache-control"?content="no-cache">
????<meta?http-equiv="expires"?content="0">????
????<meta?http-equiv="keywords"?content="keyword1,keyword2,keyword3">
????<meta?http-equiv="description"?content="This?is?my?page">
????<common:validate/>
????<html:base?/>
??</head>