Java Spring随时随地取得Session的方法

[Spring]随时随地取得Session的方法
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;


import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

HttpSession session = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getRequest().getSession();