springboot集成shiro禁止用户多点登录或重复登录剔除

近期用springboot整合shiro，进行了一个小项目。因为shiro只是一个Java安全框架，并不会做重复登录的拦截，当一个用户登录成功后（chrome登录），再用另外一个浏览器登录（IE登录）或者另外一台电脑进行登录，两个都会登录成功，两个不同的session。（题外话：同一个浏览器登录后，再打开一个标签页访问项目会直接进入登录后跳转的页面，两者是同一个session。）

预期目的：不允许重复登录，预设两个方法解决，方法一、当第二次登录时，把第一个session剔除；方法二、当第二次登录时，给出提示“用户已登录”，停留在登录页面。

废话了一大堆，下面就开始真正的表演，因为是springboot所以省去很多xml配置，全部交给Spring管理，shiro的配置如下：

import org.apache.shiro.authc.credential.HashedCredentialsMatcher;
import org.apache.shiro.cache.MemoryConstrainedCacheManager;
import org.apache.shiro.cache.ehcache.EhCacheManager;
import org.apache.shiro.session.mgt.eis.MemorySessionDAO;
import org.apache.shiro.spring.LifecycleBeanPostProcessor;
import org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.apache.shiro.web.servlet.SimpleCookie;
import org.apache.shiro.web.session.mgt.DefaultWebSessionManager;
import org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.DependsOn;

import javax.servlet.Filter;
import java.util.LinkedHashMap;
import java.util.Map;

/**
 * Shiro的配置
 *
 * @Author Rocky
 * @Create 2018-11-06 10:20
 */
@Configuration
public class ShiroConfig {

    @Bean(name = "sessionDAO")
    public MemorySessionDAO getMemorySessionDAO() {
        return new MemorySessionDAO();
    }

    @Bean(name = "sessionIdCookie")
    public SimpleCookie getSimpleCookie() {
        SimpleCookie simpleCookie = new SimpleCookie();
        simpleCookie.setName("SHRIOSESSIONID");
        return simpleCookie;
    }

    //配置shiro session 的一个管理器
    @Bean(name = "sessionManager")
    public DefaultWebSessionManager getDefaultWebSessionManager() {
        DefaultWebSessionManager sessionManager = new DefaultWebSessionManager();
        sessionManager.setSessionDAO(getMemorySessionDAO());
        sessionManager.setSessionIdCookie(getSimpleCookie());
        return sessionManager;
    }

    //配置session的缓存管理器
    @Bean(name = "shiroCacheManager")
    public MemoryConstrainedCacheManager getMemoryConstrainedCacheManager() {
        return new MemoryConstrainedCacheManager();
    }

    @Bean(name = "shiroFilter")
    public ShiroFilterFactoryBean shiroFilter(DefaultWebSecurityManager securityManager) {
        ShiroFilterFactoryBean shiroFilter = new ShiroFilterFactoryBean();
        shiroFilter.setSecurityManager(securityManager);
        // 登录配置
        shiroFilter.setLoginUrl("/login");
        shiroFilter.setSuccessUrl("/");
        shiroFilter.setUnauthorizedUrl("/error?code=403");
        // 自定义过滤器
        Map filtersMap = new LinkedHashMap();
        filtersMap.put("myLoginFilter", new MyLoginFilter());
        shiroFilter.setFilters(filtersMap);
        // 拦截配置
        Map filterChainDefinitions = new LinkedHashMap<>();
        filterChainDefinitions.put("/assets/**", "anon");
        filterChainDefinitions.put("/module/**", "anon");
        filterChainDefinitions.put("/api/**", "anon");
        filterChainDefinitions.put("/druid/**", "anon");
        filterChainDefinitions.put("/login", "anon");
        filterChainDefinitions.put("/logout", "anon");
        filterChainDefinitions.put("/**", "myLoginFilter,authc");
        shiroFilter.setFilterChainDefinitionMap(filterChainDefinitions);
        return shiroFilter;
    }

    @Bean(name = "userRealm")
    @DependsOn("lifecycleBeanPostProcessor")
    public UserRealm userRealm() {
        UserRealm userRealm = new UserRealm();
        userRealm.setCredentialsMatcher(credentialsMatcher());
        return userRealm;
    }

    @Bean(name = "securityManager")
    public DefaultWebSecurityManager securityManager() {
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        securityManager.setRealm(userRealm());
        securityManager.setCacheManager(cacheManager());
        securityManager.setSessionManager(getDefaultWebSessionManager());
        return securityManager;
    }

    @Bean(name = "cacheManager")
    public EhCacheManager cacheManager() {
        EhCacheManager cacheManager = new EhCacheManager();
        cacheManager.setCacheManagerConfigFile("classpath:shiro/ehcache-shiro.xml");
        return cacheManager;
    }

    @Bean(name = "credentialsMatcher")
    public HashedCredentialsMatcher credentialsMatcher() {
        HashedCredentialsMatcher credentialsMatcher = new HashedCredentialsMatcher();
        credentialsMatcher.setHashAlgorithmName("md5");  //散列算法
        credentialsMatcher.setHashIterations(3);  //散列次数
        return credentialsMatcher;
    }

    @Bean(name = "lifecycleBeanPostProcessor")
    public LifecycleBeanPostProcessor lifecycleBeanPostProcessor() {
        LifecycleBeanPostProcessor lifecycleBeanPostProcessor = new LifecycleBeanPostProcessor();
        return lifecycleBeanPostProcessor;
    }

    /**
     * shiro里实现的Advisor类,用来拦截注解的方法 .
     */
    @Bean
    public AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor() {
        AuthorizationAttributeSourceAdvisor advisor = new AuthorizationAttributeSourceAdvisor();
        advisor.setSecurityManager(securityManager());
        return advisor;
    }

    @Bean
    @DependsOn({"lifecycleBeanPostProcessor"})
    public DefaultAdvisorAutoProxyCreator advisorAutoProxyCreator() {
        DefaultAdvisorAutoProxyCreator advisorAutoProxyCreator = new DefaultAdvisorAutoProxyCreator();
        advisorAutoProxyCreator.setProxyTargetClass(true);
        return advisorAutoProxyCreator;
    }
}

 我的UserRealm如下：

import com.wf.ew.common.utils.StringUtil;
import com.wf.ew.system.model.Authorities;
import com.wf.ew.system.model.Role;
import com.wf.ew.system.model.User;
import com.wf.ew.system.service.AuthoritiesService;
import com.wf.ew.system.service.RoleService;
import com.wf.ew.system.service.UserService;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.util.ByteSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Lazy;

import java.util.HashSet;
import java.util.List;
import java.util.Set;

/**
 * Shiro认证和授权
 *
 * @Author Rocky
 * @Create 2018-11-06 10:28
 */
public class UserRealm extends AuthorizingRealm {
    @Autowired
    @Lazy
    private UserService userService;
    @Autowired
    @Lazy
    private RoleService roleService;
    @Autowired
    @Lazy
    private AuthoritiesService authoritiesService;

    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        User user = (User) SecurityUtils.getSubject().getPrincipal();
        SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo();
        // 角色
        List userRoles = roleService.getByUserId(user.getUserId());
        Set roles = new HashSet<>();
        for (int i = 0; i < userRoles.size(); i++) {
            roles.add(String.valueOf(userRoles.get(i).getRoleId()));
        }
        authorizationInfo.setRoles(roles);
        // 权限
        List authorities = authoritiesService.listByUserId(user.getUserId());
        Set permissions = new HashSet<>();
        for (int i = 0; i < authorities.size(); i++) {
            String authority = authorities.get(i).getAuthority();
            if (StringUtil.isNotBlank(authority)) {
                permissions.add(authority);
            }
        }
        authorizationInfo.setStringPermissions(permissions);
        return authorizationInfo;
    }

    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
        String username = (String) authenticationToken.getPrincipal();
        User user = userService.getByUsername(username);
        if (user == null) {
            throw new UnknownAccountException(); // 账号不存在
        }
        if (user.getState() != 0) {
            throw new LockedAccountException();  // 账号被锁定
        }
        SimpleAuthenticationInfo authenticationInfo = new SimpleAuthenticationInfo(user, user.getPassword(), ByteSource.Util.bytes(user.getUsername()), getName());
        return authenticationInfo;
    }
}

controller具体写法如下：

/**
 * 登录
 *
 * @Author Rocky
 * @Create 2018-11-06 10:46
 */
    @ResponseBody
    @PostMapping("/login")
    public JsonResult doLogin(String username, String password, String code, HttpServletRequest request) {
        if (StringUtil.isBlank(username, password)) {
            return JsonResult.error("账号密码不能为空");
        }
        if (!CaptchaUtil.ver(code, request)) {
            CaptchaUtil.clear(request);
            return JsonResult.error("验证码不正确");
        }
        try {
            UsernamePasswordToken token = new UsernamePasswordToken(username, password);
            Subject subject = SecurityUtils.getSubject();
            subject.login(token);
            Collection sessions = sessionDAO.getActiveSessions();
            if (subject.isAuthenticated()) {
                for (Session session : sessions) {
                    //方法一、当第二次登录时，给出提示“用户已登录”，停留在登录页面
                    if(username.equals(session.getAttribute("loginedUser"))){
                        subject.logout();
                        throw new RuntimeException("用户已登录");
                    }
                    //方法二、当第二次登录时，把第一个session剔除
//                    if(username.equals(session.getAttribute("loginedUser"))){
//                        session.setTimeout(0);
//                    }
                }
            }
            subject.getSession().setTimeout(1000*60*1);
            userService.update(getLoginUserId(),subject.getSession().getId().toString());
            subject.getSession().setAttribute("loginedUser",username);
            addLoginRecord(getLoginUserId(), request);
            return JsonResult.ok("登录成功");
        } catch (IncorrectCredentialsException ice) {
            return JsonResult.error("密码错误");
        } catch (UnknownAccountException uae) {
            return JsonResult.error("账号不存在");
        } catch (LockedAccountException e) {
            return JsonResult.error("账号被锁定");
        } catch (ExcessiveAttemptsException eae) {
            return JsonResult.error("操作频繁，请稍后再试");
        } catch (RuntimeException e){
            return JsonResult.error(e.getMessage());
        }
    }

目前方法一和方法二都有一个共同问题：效率！！！！没错，如果有一亿用户在线，那就要遍历一亿次，可怕啊！本人目前还没有想到更好的解决方法，如果有大神有好的方法万望赐教！！

说完两种方法的通病再来单独分析一下方法一和方法二的不足，方法一：如果操作人员不是常规退出，而是通过浏览器清除全部的浏览数据，刷新页面虽然返回登录页面，但是再用刚才的账号登录时会提示已经登录，因为之前的账号shiro还是一直认证通过状态，只能等session超时了才能登录（如果设置session超时时间为2小时或更久那就太悲剧了）；方法二：虽然不会产生方法一的问题，但是两个人AB公用一个账户，AB同时登录，AB同时处在下图的页面，A修改了demo的状态为锁定，而B用户的页面不会改变仍是正常的状态。

好了，以上就是springboot集成shiro禁止用户多点登录或重复登录剔除，有不足的地方请各位大神多多指教！