要在JSF中取得session....

把object放到session中:
Map sessionMap = FacesContext.getCurrentInstance().getExternalContext().getSessionMap();

sessionMap.put("aaaa");
從session中把object拿出來:
Map sessionMap = FacesContext.getCurrentInstance().getExternalContext().getSessionMap();

_logger.debug("textss" + sessionMap.get("aaaa"));