Struts2获得request和session方法

ValueStack request = ActionContext.getContex().getValueStack();

HttpServletRequest request = ServletActionContext.getRequest();

HttpServletRequest request = (HttpServletRequest ActionContext.getContext().get(ServletActionContext.HTTP_REQUEST);

HttpSession session = ServletActionContext.getRequest().getSession();

HttpSession session = (HttpSession)ActionContext.getContext().get(ServletActionContext.SESSION);

Map map = (Map)ActionContext.getContext().getSession();