会话范围以编程方式提供 ExternalContext＃getSessionMap（） ，它将封底委托给 HttpSession＃get / setAttribute（）。

The session scope is programmatically available by ExternalContext#getSessionMap() which delegates under the covers to HttpSession#get/setAttribute().

Map<String, Object> sessionMap = FacesContext.getCurrentInstance().getExternalContext().getSessionMap();
// ...

您当然也可以将托管bean放入会话范围。可以通过< managed-property> 从其他托管bean访问它（或者只使用托管bean名称作为映射键遍历会话映射）。

You can of course also just put a managed bean in the session scope. It's accessible from other managed beans by <managed-property> (or just a traversal of the session map using the managed bean name as map key).