一、獲取當前用戶登錄信息
UserDetail user = (UserDetail) subject.getPrincipal();
二、不退出登錄修改當前登錄信息
//更新session登錄信息
UserDetail userDetail = (UserDetail) SecurityUtils.getSubject().getPrincipal();
if (userInfoPO == null || userInfoPO.getId() == null) {
BeanUtils.copyProperties(userPO, userDetail);
} else {
BeanUtils.copyProperties(userInfoPO, userDetail);
}