@RequestMapping("/myContext/**")
public void redirect(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String requestUrl = request.getRequestURI();
        log.info("request.getRequestURI(): old "+requestUrl);
        requestUrl = requestUrl.replace("myContext","myContext2"); 
　　　　　log.info("request.getRequestURI(): new " + requestUrl); request.getRequestDispatcher(requestUrl).forward(request,response); 
}