public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
int id = RequestUtils.getRequiredIntParameter(request, "contactId");
Contact contact = contactManager.getById(new Long(id));
Acl acl = aclService.readAclById(new ObjectIdentityImpl(contact));
Map model = new HashMap();
model.put("contact", contact);
model.put("acl", acl);