如果两者都部署在同一服务器和上下文中，那么，是的，JSF肯定使用与Servlet完全相同的HTTP会话.作为基于Servlet的MVC框架，JSF只是在标准Servlet API之上运行，并将托管bean作为会话属性存储，而托管bean名称作为键.

If both are deployed on the same server and context, then, yes, JSF definitely uses the very same HTTP session as the servlet. JSF as being a servlet based MVC framework just runs on top of the standard servlet API and stores managed beans as session attributes with the managed bean name as key.

• 在任何与Servlet相关的类中按名称获取JSF托管Bean
• servlet如何工作?实例化，会话，共享变量和多线程

• Get JSF managed bean by name in any Servlet related class
• How do servlets work? Instantiation, sessions, shared variables and multithreading