shiro exit filter logout --- Exit Clear HTTPSession data

Rewrite LogouFilter class

import org.apache.shiro.web.filter.authc.LogoutFilter;

public class ShiroLogoutFilter extends LogoutFilter {

    @Override
    protected boolean preHandle(ServletRequest request, ServletResponse response) throws Exception {
        //清除HTTPSession的用户信息
        HttpServletRequest httpServletRequest=(HttpServletRequest) request;
        HttpSession session = httpServletRequest.getSession();
        if (session.getAttribute("user")!=null) {
            session.removeAttribute("user");
        }
        System.out.println ( "= the HTTPSession user data are cleared =" ); 
        
        return  Super .preHandle (HttpServletRequest, Response); 
    } 

}