Forwarding requests on to non-java pages from servlet.

Question

I have designed a web application using a form of single controller pattern.
I have a number of JSPs.
Each of these JSP's has a form element which if submitted got to a single servlet (Controller)which then forwards on the request to a different class based on the paramter passed. For example this form would call the SubmitFeedback class.
<form name="feedbackform" method="post" action="<%=request.getContextPath()%>/controller">
<input type="hidden" name="action" value="SubmitFeedback"/>
<input type="hidden" name="page"   value="feedback.jsp">
<tr><td><input type="submit" name="go" value="Go"/></td></tr>
</table>
</form>After the class has done its processing it returns what page to go next to the Controller class and this forwards the request on. to the next jsp
String nextPage = createAction(request.getParameter(PARAM_ACTION)).handleRequest(this,request, response, request.getParameter(PARAM_PAGE));          
request.getRequestDispatcher(nextPage).forward(request, response);
return;This is all fine but now I have a sitation where after the user submits the form I want do some processing then forward them onto another page which is not part of my system, nor java. But the RequestDispatcher is only for the current Context within a Servlet Container.
Could someone explain how I do this, what am Im missing please.

Answer 1

i am not a JavaScript expert, so I can't be sure this is everything, but:
1) The javascript has to be put inside a <script></script> block (you also had an extra close bracket):
<script type="text/javascript">
  <!--
  function validateAccept() {
    toReturn=true;
    if (form.accept.checked==false) {
      alert("You must select at least one checkbox to search");
      toReturn=false;
    return toReturn;
  //-->
</script>The script block is usually put in the head section also, but that is not necessary.
2) I would call this function from the onsubit event of the form rather than the onclick of the submit button
<form  name="form" action="..." method="post" onsubmit="return validateAccept();">
  //...3) You will need to identify the form that you want to use inside the function. Just using the name form won't work, it has to be retrieved from a certain context. The easiest thing is to pass it in as a parameter:
<script type="text/javascript">
  <!--
  function validateAccept(form) {
<form  name="form" action="..." method="post" onsubmit="return validateAccept(this);">