public String execute() throws Exception {
        java.io.InputStream is = new java.io.FileInputStream(upload);
        java.io.OutputStream os = new java.io.FileOutputStream(ServletActionContext
                .getServletContext().getRealPath( "/UploadImages" ) + "/" + uploadFileName);
                //"d://upload//"+ uploadFileName);
        
        String s2=httpservletrequest.getSession().getServletContext().getRealPath("/");
        System.out.println(s2);
        byte buffer[] = new byte[8192];
        int count = 0;
        while ((count = is.read(buffer)) > 0) {
            os.write(buffer, 0, count);
        }
        os.close();
        is.close();
//        String s1=ServletActionContext.getServletContext().getRealPath("/");
//        String s2=httpservletrequest.getSession().getServletContext().getRealPath("/") ;
//        System.out.println(s2);
        return SUCCESS;
    }