frameset 搞笑问题
framest   页面代码如下: 
  <%@   page    
 language= "java "   contentType= "text/html;   charset=GBK "   pageEncoding= "GBK "   
 %>    
  <!DOCTYPE   HTML   PUBLIC    "-//W3C//DTD   HTML   4.01   Transitional//EN ">  
  <html:html   locale= "true ">  
        <head>  
  <META   http-equiv= "Content-Type "   content= "text/html;   charset=GBK ">  
              <title> main.jsp </title>  
 	 <!-- 
 	 <link   rel= "stylesheet "   type= "text/css "   href= "styles.css ">  
 	-->    
        </head>          
        <frameset   cols= "130,* "   frameborder= "NO "   border= "0 "   framespacing= "0 ">  
        <frame   name= "leftFrame "   src= "/mail/left.jsp ">  
        <frame   name= "mainFrame "   src= "send.action ">  
        </frameset>  
        <noframes>  <body>  
  <p> 不行啊,不支持FRAMSET </p>  
  </body>  </noframes>  
  </html:html>    
 出现的问题是从IE地址栏输入frameset页面时,页面显示正常,但,从ACTION转发到framset页面时左边的页面提示The   requested   resource   (/mail/left.jsp)   is   not   available. 
 但右边的页面正常.也试过将左边连接改为多种形式,如:src= "../mail/left.jsp "         src= "   /left.jsp    "   src= "left.jsp "情况都一样.
------解决方案--------------------  最安全的办法用.do(left.do)   
 用jsp直接连的话最好加上 
 request.getContextPath()   
 但我试过 src= " <%=request.getContextPath()%> /mail/left.jsp "   
 这样才不至于把路径问题给高混乱~