jsp页面不显示？？？？？
我用的是struts+javabean
服务器是tomcat。
在跳转到main.jsp页面后，main.jsp竟然什么都没有显示???
main.jsp代码如下：
<%@ page language= "java " pageEncoding= "gb2312 "%>
<%@ taglib uri= "WEB-INF/struts-bean.tld " prefix= "bean " %>
<%@ taglib uri= "WEB-INF/struts-html.tld " prefix= "html " %>
<html:html lang= "true ">
<head>
<title> 后台管理 </title>
</head>
<body> 11
<FRAMESET id=topframeset border=0 frameSpacing=0 borderColor=menu frameBorder=0 rows= "85,* ">
<frame name= "topFrame " scrolling= "NO " noresize src= "top.htm ">
<frameset id=bottomframeset rows= "*,30 " border= "0 " framespacing= "0 " borderColor=menu >
<FRAMESET id=testframeset border=0 frameSpacing=0 borderColor=#FFFFFF rows=* cols=250,* scrolling=1>
<FRAME border=1 name=leftFrame src= " <html:rewrite page= "user/userAction.view?do=doLeftview "/> " frameBorder=0 scrolling=AUTO>
<FRAME border=1 name=mainFrame src= " <html:rewrite page= "user/userAction.view?do=doWelcomeview "/> " frameBorder=0 scrolling=auto>
</FRAMESET>
<frame name= "bottomFrame " scrolling= "NO " noresize src= " <html:rewrite page= "user/userAction.view?do=doBotview "/> ">
</frameset>
</frameset>
<noframes> </noframes>
</body>
</html:html>
非常确定已经跳转到这个页面，标题都出来了。
但是frame里面的页面怎么也不显示？
把代码改成这样也一样：
<%@ page language= "java " pageEncoding= "gb2312 "%>
<%@ taglib uri= "WEB-INF/struts-bean.tld " prefix= "bean " %>
<%@ taglib uri= "WEB-INF/struts-html.tld " prefix= "html " %>
<html:html lang= "true ">
<head>
<title> 后台管理 </title>
</head>
<body>
<FRAMESET id=topframeset border=0 frameSpacing=0 borderColor=menu frameBorder=0 rows= "85,* ">
<frame name= "topFrame " scrolling= "NO " noresize src= "/top.htm ">
<frameset id=bottomframeset rows= "*,30 " border= "0 " framespacing= "0 " borderColor=menu >
<FRAMESET id=testframeset border=0 frameSpacing=0 borderColor=#FFFFFF rows=* cols=250,* scrolling=1>
<FRAME border=1 name=leftFrame src= "/left.jsp " frameBorder=0 scrolling=AUTO>
<FRAME border=1 name=mainFrame src= "/welcome.html " frameBorder=0 scrolling=auto>
</FRAMESET>
<frame name= "bottomFrame " scrolling= "NO " noresize src= "bot.htm ">
</frameset>
</frameset>
<noframes> </noframes>
</body>
</html:html>
其中的top.htm，left.jsp，welcome.html都是很简单的文件，不会有错。
我都不知道怎么debug了，那位大虾能给指个路？
[解决办法]
你的浏览器不支持frame吧