please help me(it is really urgent...trying from many days)

i was happy when my xhtml mp page worked...
but my jsp contained only xhtml mp code..thats why it worked
but when i tried to but some jsp code into it...it gives me bad content type error

as i told before i have set mime types in web.xml file

also i tried setting it in jsp file but did not work
like response.setContentType("application/xhtml+xml");etc

what could be wrong

please if any one can help me..it would be really nice
thanks

my jsp file
<?xml version="1.0"?>
<!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.0//EN"
"http://www.wapforum.org/DTD/xhtml-mobile10.dtd" >
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>XHTML Mobile Profile Document</title>
</head>
<body>
<p> sash</p>
</body>
</html>