如何使用Struts2中的request,response对象方法

***************1.[一般推荐使用](只能获得request,而response则得不到)**********************

ActionContext.getContext().put("liuwei", "andy"); //request.setAttribute("liuwei", "andy");

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

   map.put("username", "name");

*************2.[强烈推荐使用]***********

HttpServletRequest request = ServletActionContext.getRequest();

   HttpServletResponse response = ServletActionContext.getResponse();

   request.getSession().setAttribute("username","liuwei");

   request.setAttribute("pass", "132");

*************3[一般不推荐](麻烦,与servlet API 耦合大).*****************

继承 implements ServletRequestAware

类中申明:private HttpServletRequest request;

实现接口的方法:

public void setServletRequest(HttpServletRequest request)

{

   this.request = request;

}