JSF EL的内嵌变量

·application: ServletContext or PortletContext, The ServletContext or PortletContext, depending on whether an application is running in a servlet or portlet context, respectively.·applicationScope: Map A map for storing application-scoped data. This is the same map into which application-scoped managed beans are stored.·component: (JSF 2.0 only) UIComponent The UIComponent instance being currently processed. cc (JSF 2.0 only) UIComponent The top-level composite component currently being processed.·cookie: Map A map view of values in the HTTP Set-Cookie header.·facesContext: FacesContext The actual FacesContext instance.·flash: (2.0 only) Map A map whose values are guaranteed to be present only on the “next” request. (A detailed explanation of flash is found in the text.)·header Map: A map view of all the HTTP headers for this request.·headerValues: Map A map view of all the HTTP headers for this request. Each value in the map is an array of strings containing all the values for that key.·initParam: Map A map view of the init parameters for this application.·param: Map A map view of all the query parameters for this request.·paramValues: Map A map view of all the HTTP headers for this request. Each value in the map is an array of strings containing all the values for that key.·request: ServletRequest or PortletRequest, The ServletRequest or PortletRequest, depending on whether the code is executing in a servlet or portlet environment, respectively.·requestScope: Map A map for storing request-scoped data. This is the same scope into which request-scoped managed beans are stored.·resource: Resource Allow a resource reference to be rendered to the page.·session: HttpSession or PortletSession, The HttpSession or PortletSession, depending onwhether code is executing in a servlet or portlet environment, respectively.·sessionScope: Map A map view of the session-scoped attributes.·view: UIViewRoot The current UIViewRoot for this view.·viewScope: (JSF 2.0 only) Map A map view of the attributes scoped to the current view.