JSP :: How To Get Rid Of Webpage Expired Error When Clicking Browser Back Button

I am getting Web Page Expired error while clicking the back button of the browser, after submitting a form. The form method is POST. ( I have to keep it that way). I tried this code

<%session.setHeader("Cache-Control", "no-cache");
response.setHeader("Cache-Control", "no-store");
response.setDateHeader("Expires", 0);
response.setHeader("Pragma", "no-cache");
%>

In my jsp. Still it is not working. I also tried

<script language="JavaScript" type="text/javascript">
window.history.forward(1);
</script>