thanks before typing this topic! for your attention!!
now!!
I've created a JSP project with netbeans 7.0 and tomcat 7.0 too with no problem!
but when export it to a web archive (war) and deploy it into my tomcat server (without netbeans) i saw a problem;
this tag doesn't work:
<%if (request.getParameter("submit").contains("اضاف ه")) {...
<%if (request.getParameter("emplist") != null) {
has any body now what's the problem!!!?
thans for any advise!