另一链接：
springboot+springsecurity配置登录后踢出前一个登录用户
1.自定义登陆过滤器类：
/**
* 登录帐号控制过滤器
*
*/
public class KickoutSessionFilter extends AccessControlFilter
{
private final static ObjectMapper objectMapper = new ObjectMapper();
/**
* 同一个用户最大会话数
**/
private int maxSession = -1;
/**
* 踢出之前登录的/之后登录的用户 默认false踢出之前登录的用户
**/
private Boolean kickoutAfter = false;
/**
* 踢出后到的地址
**/
private String kickoutUrl;
private SessionManager sessionManager;
private Cache<String, Deque<Serializable>> cache;
@Override
protected boolean isAccessAllowed(ServletRequest servletRequest, ServletResponse servletResponse, Object o)
throws Exception
{
return false;
}
@Override
protected boolean onAccessDenied(ServletRequest request, ServletResponse response) throws Exception
{
Subject subject = getSubject(request, response);
if (!subject.isAuthenticated() && !subject.isRemembered() || maxSession == -1)
{
// 如果没有登录或用户最大会话数为-1，直接进行之后的流程
return true;
}
try
{
Session session = subject.getSession();
// 当前登录用户
SysUser user = ShiroUtils.getSysUser();
String loginName = user.getLoginName();
Serializable sessionId = session.getId();
// 读取缓存用户 没有就存入
Deque<Serializable> deque = cache.get(loginName);
if (deque == null)
{
// 初始化队列
deque = new ArrayDeque<Serializable>();
}
// 如果队列里没有此sessionId，且用户没有被踢出；放入队列
if (!deque.contains(sessionId) && session.getAttribute("kickout") == null)
{
// 将sessionId存入队列
deque.push(sessionId);
// 将用户的sessionId队列缓存
cache.put(loginName, deque);
}
// 如果队列里的sessionId数超出最大会话数，开始踢人
while (deque.size() > maxSession)
{
// 是否踢出后来登录的，默认是false；即后者登录的用户踢出前者登录的用户；
Serializable kickoutSessionId = kickoutAfter ? deque.removeFirst() : deque.removeLast();
// 踢出后再更新下缓存队列
cache.put(loginName, deque);
try
{
// 获取被踢出的sessionId的session对象
Session kickoutSession = sessionManager.getSession(new DefaultSessionKey(kickoutSessionId));
if (null != kickoutSession)
{
// 设置会话的kickout属性表示踢出了
kickoutSession.setAttribute("kickout", true);
}
}
catch (Exception e)
{
// 面对异常，我们选择忽略
}
}
// 如果被踢出了，(前者或后者)直接退出，重定向到踢出后的地址
if (session.getAttribute("kickout") != null && (Boolean) session.getAttribute("kickout") == true)
{
// 退出登录
subject.logout();
saveRequest(request);
return isAjaxResponse(request, response);
}
return true;
}
catch (Exception e)
{
return isAjaxResponse(request, response);
}
}
private boolean isAjaxResponse(ServletRequest request, ServletResponse response) throws IOException
{
HttpServletRequest req = (HttpServletRequest) request;
HttpServletResponse res = (HttpServletResponse) response;
if (ServletUtils.isAjaxRequest(req))
{
AjaxResult ajaxResult = AjaxResult.error("您已在别处登录，请您修改密码或重新登录");
ServletUtils.renderString(res, objectMapper.writeValueAsString(ajaxResult));
}
else
{
WebUtils.issueRedirect(request, response, kickoutUrl);
}
return false;
}
public void setMaxSession(int maxSession)
{
this.maxSession = maxSession;
}
public void setKickoutAfter(boolean kickoutAfter)
{
this.kickoutAfter = kickoutAfter;
}
public void setKickoutUrl(String kickoutUrl)
{
this.kickoutUrl = kickoutUrl;
}
public void setSessionManager(SessionManager sessionManager)
{
this.sessionManager = sessionManager;
}
// 设置Cache的key的前缀
public void setCacheManager(CacheManager cacheManager)
{
// 必须和ehcache缓存配置中的缓存name一致
this.cache = cacheManager.getCache(ShiroConstants.SYS_USERCACHE);
}
}
shiro配置类
@Configuration
public class ShiroConfig
{
/**
* 同一个用户多设备登录限制
*/
public KickoutSessionFilter kickoutSessionFilter()
{
KickoutSessionFilter kickoutSessionFilter = new KickoutSessionFilter();
kickoutSessionFilter.setCacheManager(getEhCacheManager());
kickoutSessionFilter.setSessionManager(sessionManager());
// 同一个用户最大的会话数，默认-1无限制；比如2的意思是同一个用户允许最多同时两个人登录
kickoutSessionFilter.setMaxSession(maxSession);
// 是否踢出后来登录的，默认是false；即后者登录的用户踢出前者登录的用户；踢出顺序
kickoutSessionFilter.setKickoutAfter(kickoutAfter);
// 被踢出后重定向到的地址；
kickoutSessionFilter.setKickoutUrl("/login?kickout=1");
return kickoutSessionFilter;
}
/**
* Shiro过滤器配置
*/
@Bean
public ShiroFilterFactoryBean shiroFilterFactoryBean(SecurityManager securityManager)
{
ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
// Shiro的核心安全接口,这个属性是必须的
shiroFilterFactoryBean.setSecurityManager(securityManager);
// 身份认证失败，则跳转到登录页面的配置
shiroFilterFactoryBean.setLoginUrl(loginUrl);
// 权限认证失败，则跳转到指定页面
shiroFilterFactoryBean.setUnauthorizedUrl(unauthorizedUrl);
// Shiro连接约束配置，即过滤链的定义
LinkedHashMap<String, String> filterChainDefinitionMap = new LinkedHashMap<>();
// 对静态资源设置匿名访问
filterChainDefinitionMap.put("/favicon.ico**", "anon");
// 系统权限列表
// filterChainDefinitionMap.putAll(SpringUtils.getBean(IMenuService.class).selectPermsAll());
Map<String, Filter> filters = new LinkedHashMap<String, Filter>();
filters.put("captchaValidate", captchaValidateFilter());
filters.put("kickout", kickoutSessionFilter());//注意这里，注册自己定义的会话数量控制过滤器
// 注销成功，则跳转到指定页面
filters.put("logout", logoutFilter());
shiroFilterFactoryBean.setFilters(filters);
// 所有请求需要认证
filterChainDefinitionMap.put("/**", "user,kickout,onlineSession,syncOnlineSession");
shiroFilterFactoryBean.setFilterChainDefinitionMap(filterChainDefinitionMap);
return shiroFilterFactoryBean;
}