我是Redis的新手。我已经按照本教程将HttpSession与redis一起使用。
https://docs.spring.io/spring- session/docs/current/reference/html5/guides/boot.html
现在,我的应用程序具有“从所有设备注销”选项。单击后,如何删除或使该用户的所有会话无效?
另外,当用户更改密码时,如何使除当前会话之外的所有会话无效?
编辑:
我尝试使用会话注册表。
@Autowired private FindByIndexNameSessionRepository sessionRepository; @Autowired FindByIndexNameSessionRepository<? extends ExpiringSession> sessions; @RequestMapping(value = "/logoutalldevices", method = RequestMethod.GET) public Response test(HttpServletRequest request, HttpServletResponse response) throws Exception { SpringSessionBackedSessionRegistry sessionRegistry = new SpringSessionBackedSessionRegistry(sessionRepository); Collection<? extends ExpiringSession> usersSessions = sessions .findByIndexNameAndIndexValue(FindByIndexNameSessionRepository.PRINCIPAL_NAME_INDEX_NAME, "myUserId") .values(); usersSessions.forEach((temp) -> { String sessionId = temp.getId(); // sessionRegistry.removeSessionInformation(sessionId); SessionInformation info = sessionRegistry.getSessionInformation(sessionId); info.expireNow(); }); return Response.ok().build(); }
但这不是从redis db中删除会话或使会话无效。尽管它向名为’sessionAttr:org.springframework.session.security.SpringSessionBackedSessionInformation.EXPIRED’的会话添加了一个值为true的新属性。我可以使用redis client在redis db中看到这个新的键值对
HGETALL 'sessionid'
编辑
我尝试使用redistemplate从redis db手动删除会话。
@Autowired RedisTemplate<String, String> redisTemplate; --------- redisTemplate.delete("spring:session:sessions:" + sessionId); redisTemplate.delete("spring:session:sessions:expires:" + sessionId);
这几乎可行。它从redis db中删除值,但不删除密钥。
127.0.0.1:6379> keys * 1) "spring:session:sessions:25635a14-a4f1-4aa1-bf5a-bc20f972eec7" 2) "spring:session:sessions:expires:25635a14-a4f1-4aa1-bf5a-bc20f972eec7" 3) "spring:session:index:org.springframework.session.FindByIndexNameSessionRepository.PRINCIPAL_NAME_INDEX_NAME:1" 127.0.0.1:6379> hgetall spring:session:sessions:25635a14-a4f1-4aa1-bf5a-bc20f972eec7 1) "lastAccessedTime" 2) "\xac\xed\x00\x05sr\x00\x0ejava.lang.Long;\x8b\xe4\x90\xcc\x8f#\xdf\x02\x00\x01J\x00\x05valuexr\x00\x10java.lang.Number\x86\xac\x95\x1d\x0b\x94\xe0\x8b\x02\x00\x00xp\x00\x00\x01[R'\x15\xc1" 127.0.0.1:6379>
它删除了会话中除lastAccessedTime时间之外的所有其他键值对。
还有一个奇怪的是,这是我在redisTemplate.delete("key")执行时在redis监视器中看到的日志:
redisTemplate.delete("key")
1491731944.899711 [0 127.0.0.1:62816] "DEL" "spring:session:sessions:25635a14-a4f1-4aa1-bf5a-bc20f972eec7" 1491731944.899853 [0 127.0.0.1:62816] "DEL" "spring:session:sessions:expires:25635a14-a4f1-4aa1-bf5a-bc20f972eec7"
如果我将以上两个命令复制并粘贴到redis-client并执行,则密钥将被删除。我再执行一次也看不到键keys *。我不知道为什么在使用RedisTemplate
keys *
RedisTemplate
127.0.0.1:6379> "DEL" "spring:session:sessions:25635a14-a4f1-4aa1-bf5a-bc20f972eec7" (integer) 1 127.0.0.1:6379> "DEL" "spring:session:sessions:expires:25635a14-a4f1-4aa1-bf5a-bc20f972eec7" (integer) 1 127.0.0.1:6379> keys * 1) "spring:session:index:org.springframework.session.FindByIndexNameSessionRepository.PRINCIPAL_NAME_INDEX_NAME:1" 127.0.0.1:6379>
我想知道你是 you are following the correct path 因为用户会话无效
you are following the correct path
usersSessions.forEach((session) -> { sessionRegistry.getSessionInformation(session.getId()).expireNow(); });
注意事项
SessionInformation.expireNow()
并不意味着要从redis数据库中删除条目,它只是将您已提到的过期属性附加到会话。
redis
但是,这如何使用户会话无效?
这是ConcurrentSessionFilter发挥作用的地方, .doFilter()方法实现了automatically logging out
.doFilter()
automatically logging out
这是 ConcurrentSessionFilter* 的代码段 *
public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException { HttpServletRequest request = (HttpServletRequest) req; HttpServletResponse response = (HttpServletResponse) res; HttpSession session = request.getSession(false); if (session != null) { SessionInformation info = sessionRegistry.getSessionInformation(session .getId()); if (info != null) { if (info.isExpired()) { // Expired - abort processing doLogout(request, response); String targetUrl = determineExpiredUrl(request, info); if (targetUrl != null) { redirectStrategy.sendRedirect(request, response, targetUrl); return; } else { response.getWriter().print( "This session has been expired (possibly due to multiple concurrent " + "logins being attempted as the same user)."); response.flushBuffer(); } return; } else { // Non-expired - update last request date/time sessionRegistry.refreshLastRequest(info.getSessionId()); } } } chain.doFilter(request, response); }
为此加油!