STRUTS2

struts2

在action中获取request、session、application的方法；
1、获取map对象
ActionContext context = ActionContext.getContext();
Map request = (Map)context.get("request");
Map session = context.getSession();
Map application = context.getApplication();
或者：
RequestAware.setRequest(Map request)
SeesionAware.setSession(Map session)
ApplicationAware.setApplication(Map application)

2、获取对象；
ServletActionContext
HttpServletRequest getRequest();
ServletContext getServletContext();
HttpServletResponse getResponse();
或者： ActionContext.getContent().get(ServletActionContext.HTTP_REQUES;T)
 ActionContext.getContent().get(ServletActionContext.SERVLET_CONTEXT)
 ActionContext.getContent().get(ServletActionContext.HTTP_RESPONSE)
或者：实现ServletRequestAware.setServletRequest(HttpServletRequest req)
   ServletContextAware.setServletContext(ServletContext context)