struts2 Action中获取request, response对象的方法

struts2 Action中获取request, response对象的方法
ActionContext ctx = ActionContext.getContext();

HttpServletRequest request = (HttpServletRequest)ctx.get(ServletActionContext.HTTP_REQUEST);

HttpServletResponse response = (HttpServletResponse)ctx.get(ServletActionContext.HTTP_RESPONSE);

//ServletActionContext.APPLICATION;
//ServletActionContext.SESSION;
//ServletActionContext.PAGE_CONTEXT;

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