package com.manage.service;

import org.springframework.stereotype.Service;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.util.HashMap;

/**
 * @author 谢铭
 * @date 2021/9/29
 * 注销之前的session,修复之前的bug
 * 触发条件：同一浏览器打开登录页
 */

@Service
public class LoginService {
    public void removeOldUserOnLogin(HttpServletRequest request) {
        if (null != request.getSession(false)&&!"".equals(request.getSession(false))) {
            //直接注销之前session
            request.getSession(false).invalidate();
        }
    }
}