javaweb查看后台session所有的值

@RequestMapping(value ="/test2")
    public String upload2( HttpSession session) {
　　　　　　　　Enumeration e = session.getAttributeNames();
     while (e.hasMoreElements()) {
            String sessionName = (String) e.nextElement();
            System.out.println("\nsession item name=" + sessionName);
            System.out.println("\nsession item value=" + request.getSession().getAttribute(sessionName));
        }
        return "test";
    }