struts2中获得request和session

request:

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

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

session:

HttpSession session = ServletActionContext.getRequest().getSession();   
  
HttpSession session = (HttpSession)ActionContext.getContext().get(ServletActionContext.SESSION);   
  
Map map = (Map)ActionContext.getContext().getSession();