HttpServletRequest request 获取当前登录的用户-获取当前用户

当然需要引用这个啦

import javax.servlet.http.HttpServletRequest;

然后 

 HttpSession session = request.getSession();//import javax.servlet.http.HttpSession;
        UserModel user = (UserModel) session.getAttribute("USER_SESSION");//用户类import com.hs.model.UserModel;