为什么我的这个框架加了登陆判断后显示不出来呢?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN " "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd ">
<html xmlns= "http://www.w3.org/1999/xhtml ">
<%@ include file= "checkvalid.jsp " %>
<head>
<meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 " />
<title> </title>
</head>
<frameset rows= "126,* " cols= "* " frameborder= "no " border= "0 " framespacing= "0 ">
<frame src= "top.html " name= "topFrame " scrolling= "No " noresize= "noresize " id= "topFrame " title= "top " />
<frameset rows= "* " cols= "257,* " framespacing= "0 " frameborder= "no " border= "0 ">
<frame src= "left.jsp " name= "leftFrame " scrolling= "No " noresize= "noresize " id= "leftFrame " title= "left " />
<frame src= "main.jsp " name= "rightFrame " id= "rightFrame " />
</frameset>
</frameset>
<noframes> <body>
</body>
</noframes> </html>
在TOMCAT下显示不出来
哪个checkvalid.jsp页面如下:
<%@page contentType= "text/html; charset=gb2312 "%>
<%request.setCharacterEncoding( "gb2312 ");%>
<%@ page language= "java " import= "java.util.*,java.sql.* " pageEncoding= "gb2312 "%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN ">
<html>
<head>
<title> My JSP 'checkvalid.jsp ' starting page </title>
<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 ">
<!--
<link rel= "stylesheet " type= "text/css " href= "styles.css ">
-->
</head>
<body>
<!--验证用户是否经过有效检查 -->
<%