struts2 request和session

在struts2中,如何将参数放到request和session里?

放到request里:
    HttpServletRequest request = ServletActionContext.getRequest();
    request.setAttribute("bean", swbltljl);



方到session里:
     ActionContext.getContext().getSession().put("key",value);

或者是
HttpSession session = request.getSession();

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