spring boot 2.0 集成 shiro 和 pac4j cas单点登录

新开的项目，果断使用  spring boot  最新版本  2.0.3 ，免得后期升级坑太多，前期把雷先排了。

由于对 shiro 比较熟，故使用 shiro 来做权限控制。同时已经存在了 cas 认证中心， shiro 官方在 1.2 中就表明已经弃用了 CasFilter ，建议使用 buji-pac4j ，故使用 pac4j 来做单点登录的控制。

废话不说，代码如下：

2018-08-29更新：由于pac4j 3.1 版本未支持单点登出，故升级到 4.0.0 版本，pac4j-cas 升级到 3.0.2版本，可以实现单点登出。

首先是 maven 配置。

<dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-spring</artifactId>
            <version>1.4.0</version>
        </dependency>

        <dependency>
            <groupId>org.pac4j</groupId>
            <artifactId>pac4j-cas</artifactId>
            <version>3.0.2</version>
        </dependency>
        <dependency>
            <groupId>io.buji</groupId>
            <artifactId>buji-pac4j</artifactId>
            <version>4.0.0</version>
            <exclusions>
                <exclusion>
                    <artifactId>shiro-web</artifactId>
                    <groupId>org.apache.shiro</groupId>
                </exclusion>
            </exclusions>
        </dependency>

import io.buji.pac4j.filter.LogoutFilter;
import io.buji.pac4j.filter.SecurityFilter;
import io.buji.pac4j.subject.Pac4jSubjectFactory;
import org.apache.shiro.session.mgt.SessionManager;
import org.apache.shiro.session.mgt.eis.MemorySessionDAO;
import org.apache.shiro.session.mgt.eis.SessionDAO;
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.pac4j.core.config.Config;
import org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.DependsOn;
import org.springframework.web.filter.DelegatingFilterProxy;
import org.jasig.cas.client.session.SingleSignOutFilter;
import javax.servlet.DispatcherType;
import javax.servlet.Filter;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;

/**
 * @author gongtao
 * @version 2018-03-30 10:49
 * @update 2018-08-29 升级 pac4j 版本到 4.0.0
 **/
@Configuration
public class ShiroConfig {

    /** 项目工程路径 */
    @Value("${cas.project.url}")
    private String projectUrl;

    /** 项目cas服务路径 */
    @Value("${cas.server.url}")
    private String casServerUrl;

    /** 客户端名称 */
    @Value("${cas.client-name}")
    private String clientName;

    @Bean("securityManager")
    public DefaultWebSecurityManager securityManager(Pac4jSubjectFactory subjectFactory, SessionManager sessionManager, CasRealm casRealm){
        DefaultWebSecurityManager manager = new DefaultWebSecurityManager();
        manager.setRealm(casRealm);
        manager.setSubjectFactory(subjectFactory);
        manager.setSessionManager(sessionManager);
        return manager;
    }

    @Bean
    public CasRealm casRealm(){
        CasRealm realm = new CasRealm();
        // 使用自定义的realm
        realm.setClientName(clientName);
        realm.setCachingEnabled(false);
        //暂时不使用缓存
        realm.setAuthenticationCachingEnabled(false);
        realm.setAuthorizationCachingEnabled(false);
        //realm.setAuthenticationCacheName("authenticationCache");
        //realm.setAuthorizationCacheName("authorizationCache");
        return realm;
    }

    /**
     * 使用 pac4j 的 subjectFactory
     * @return
     */
    @Bean
    public Pac4jSubjectFactory subjectFactory(){
        return new Pac4jSubjectFactory();
    }

    @Bean
    public FilterRegistrationBean filterRegistrationBean() {
        FilterRegistrationBean filterRegistration = new FilterRegistrationBean();
        filterRegistration.setFilter(new DelegatingFilterProxy("shiroFilter"));
        //  该值缺省为false,表示生命周期由SpringApplicationContext管理,设置为true则表示由ServletContainer管理
        filterRegistration.addInitParameter("targetFilterLifecycle", "true");
        filterRegistration.setEnabled(true);
        filterRegistration.addUrlPatterns("/*");
        filterRegistration.setDispatcherTypes(DispatcherType.REQUEST, DispatcherType.FORWARD);
        return filterRegistration;
    }

    /**
     * 加载shiroFilter权限控制规则（从数据库读取然后配置）
     * @param shiroFilterFactoryBean
     */
    private void loadShiroFilterChain(ShiroFilterFactoryBean shiroFilterFactoryBean){
        /*下面这些规则配置最好配置到配置文件中 */
        Map<String, String> filterChainDefinitionMap = new LinkedHashMap<>();
        filterChainDefinitionMap.put("/", "securityFilter");
        filterChainDefinitionMap.put("/application/**", "securityFilter");
        filterChainDefinitionMap.put("/index", "securityFilter");
        filterChainDefinitionMap.put("/callback", "callbackFilter");
        filterChainDefinitionMap.put("/logout", "logout");
        filterChainDefinitionMap.put("/**","anon");
        // filterChainDefinitionMap.put("/user/edit/**", "authc,perms[user:edit]");
        shiroFilterFactoryBean.setFilterChainDefinitionMap(filterChainDefinitionMap);
    }

    /**
     * shiroFilter
     * @param securityManager
     * @param config
     * @return
     */
    @Bean("shiroFilter")
    public ShiroFilterFactoryBean factory(DefaultWebSecurityManager securityManager, Config config) {
        ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
        // 必须设置 SecurityManager
        shiroFilterFactoryBean.setSecurityManager(securityManager);
        //shiroFilterFactoryBean.setUnauthorizedUrl("/403");
        // 添加casFilter到shiroFilter中
        loadShiroFilterChain(shiroFilterFactoryBean);
        Map<String, Filter> filters = new HashMap<>(3);
        //cas 资源认证拦截器
        SecurityFilter securityFilter = new SecurityFilter();
        securityFilter.setConfig(config);
        securityFilter.setClients(clientName);
        filters.put("securityFilter", securityFilter);
        //cas 认证后回调拦截器
        CallbackFilter callbackFilter = new CallbackFilter();
        callbackFilter.setConfig(config);
        callbackFilter.setDefaultUrl(projectUrl);
        filters.put("callbackFilter", callbackFilter);
        // 注销 拦截器
        LogoutFilter logoutFilter = new LogoutFilter();
        logoutFilter.setConfig(config);
        logoutFilter.setCentralLogout(true);
        logoutFilter.setLocalLogout(true);
        logoutFilter.setDefaultUrl(projectUrl + "/callback?client_name=" + clientName);
        filters.put("logout",logoutFilter);
        shiroFilterFactoryBean.setFilters(filters);
        return shiroFilterFactoryBean;
    }

    @Bean
    public SessionDAO sessionDAO(){
        return new MemorySessionDAO();
    }

    /**
     * 自定义cookie名称
     * @return
     */
    @Bean
    public SimpleCookie sessionIdCookie(){
        SimpleCookie cookie = new SimpleCookie("sid");
        cookie.setMaxAge(-1);
        cookie.setPath("/");
        cookie.setHttpOnly(false);
        return cookie;
    }

    @Bean
    public DefaultWebSessionManager sessionManager(SimpleCookie sessionIdCookie, SessionDAO sessionDAO){
        DefaultWebSessionManager sessionManager = new DefaultWebSessionManager();
        sessionManager.setSessionIdCookie(sessionIdCookie);
        sessionManager.setSessionIdCookieEnabled(true);
        //30分钟
        sessionManager.setGlobalSessionTimeout(180000);
        sessionManager.setSessionDAO(sessionDAO);
        sessionManager.setDeleteInvalidSessions(true);
        sessionManager.setSessionValidationSchedulerEnabled(true);
        return sessionManager;
    }

    /**
     * 下面的代码是添加注解支持
     */
    @Bean
    @DependsOn("lifecycleBeanPostProcessor")
    public DefaultAdvisorAutoProxyCreator defaultAdvisorAutoProxyCreator() {
        DefaultAdvisorAutoProxyCreator defaultAdvisorAutoProxyCreator = new DefaultAdvisorAutoProxyCreator();
        // 强制使用cglib，防止重复代理和可能引起代理出错的问题
        // https://zhuanlan.zhihu.com/p/29161098
        defaultAdvisorAutoProxyCreator.setProxyTargetClass(true);
        return defaultAdvisorAutoProxyCreator;
    }

    @Bean
    public static LifecycleBeanPostProcessor lifecycleBeanPostProcessor() {
        return new LifecycleBeanPostProcessor();
    }

    @Bean
    public AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor(DefaultWebSecurityManager securityManager) {
        AuthorizationAttributeSourceAdvisor advisor = new AuthorizationAttributeSourceAdvisor();
        advisor.setSecurityManager(securityManager);
        return advisor;
    }
　　
　　

   @Bean
   public FilterRegistrationBean singleSignOutFilter() {
       FilterRegistrationBean bean = new FilterRegistrationBean();
       bean.setName("singleSignOutFilter");
       SingleSignOutFilter singleSignOutFilter = new SingleSignOutFilter();
       singleSignOutFilter.setCasServerUrlPrefix(casServerUrl);
       singleSignOutFilter.setIgnoreInitConfiguration(true);
       bean.setFilter(singleSignOutFilter);
       bean.addUrlPatterns("/*");
       bean.setEnabled(true);
　　　　bean.setOrder(Ordered.HIGHEST_PERCEDENCE);
       return bean;
   }

}

上面是  shiro 的配置。

import io.buji.pac4j.context.ShiroSessionStore;
import org.pac4j.cas.config.CasConfiguration;
import org.pac4j.cas.config.CasProtocol;
import org.pac4j.core.config.Config;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * @author gongtao
 * @version 2018-07-06 9:35
 * @update 2018-08-29 升级 pac4j 版本到 4.0.0
 **/
@Configuration
public class Pac4jConfig {

    /** 地址为：cas地址 */
    @Value("${cas.server.url}")
    private String casServerUrl;

    /** 地址为：验证返回后的项目地址：http://localhost:8081 */
    @Value("${cas.project.url}")
    private String projectUrl;

    /** 相当于一个标志，可以随意 */
    @Value("${cas.client-name}")
    private String clientName;

    /**
     *  pac4j配置
     * @param casClient
     * @param shiroSessionStore
     * @return
     */
    @Bean("authcConfig")
    public Config config(CasClient casClient, ShiroSessionStore shiroSessionStore) {
        Config config = new Config(casClient);
        config.setSessionStore(shiroSessionStore);
        return config;
    }

    /**
     * 自定义存储
     * @return
     */
    @Bean
    public ShiroSessionStore shiroSessionStore(){
        return new ShiroSessionStore();
    }

    /**
     * cas 客户端配置
     * @param casConfig
     * @return
     */
    @Bean
    public CasClient casClient(CasConfiguration casConfig){
        CasClient casClient = new CasClient(casConfig);
        //客户端回调地址
        casClient.setCallbackUrl(projectUrl + "/callback?client_name=" + clientName);
        casClient.setName(clientName);
        return casClient;
    }

    /**
     * 请求cas服务端配置
     * @param casLogoutHandler
     */
    @Bean
    public CasConfiguration casConfig(){
        final CasConfiguration configuration = new CasConfiguration();
        //CAS server登录地址
        configuration.setLoginUrl(casServerUrl + "/login");
        //CAS 版本，默认为 CAS30，我们使用的是 CAS20
        configuration.setProtocol(CasProtocol.CAS20);
        configuration.setAcceptAnyProxy(true);
        configuration.setPrefixUrl(casServerUrl + "/");
        return configuration;
    }

}

以上为pac4j 配置

import org.pac4j.cas.config.CasConfiguration;
import org.pac4j.core.context.Pac4jConstants;
import org.pac4j.core.context.WebContext;
import org.pac4j.core.context.session.SessionStore;
import org.pac4j.core.redirect.RedirectAction;
import org.pac4j.core.util.CommonHelper;

/**
 * @author gongtao
 * @version 2018-07-06 9:41
 * @update 2018-08-29 升级 pac4j 版本到 4.0.0
 **/
public class CasClient extends org.pac4j.cas.client.CasClient {
    public CasClient() {
        super();
    }

    public CasClient(CasConfiguration configuration) {
        super(configuration);
    }

    /*
     * (non-Javadoc)
     * @see org.pac4j.core.client.IndirectClient#getRedirectAction(org.pac4j.core.context.WebContext)
     */

    @Override
    public RedirectAction getRedirectAction(WebContext context) {
        this.init();
        if (getAjaxRequestResolver().isAjax(context)) {
            this.logger.info("AJAX request detected -> returning the appropriate action");
            RedirectAction action = getRedirectActionBuilder().redirect(context);
            this.cleanRequestedUrl(context);
            return getAjaxRequestResolver().buildAjaxResponse(action.getLocation(), context);
        } else {
            final String attemptedAuth = (String)context.getSessionStore().get(context, this.getName() + ATTEMPTED_AUTHENTICATION_SUFFIX);
            if (CommonHelper.isNotBlank(attemptedAuth)) {
                this.cleanAttemptedAuthentication(context);
                this.cleanRequestedUrl(context);
                //这里按自己需求处理，默认是返回了401，我在这边改为跳转到cas登录页面
                //throw HttpAction.unauthorized(context);
                return this.getRedirectActionBuilder().redirect(context);
            } else {
                return this.getRedirectActionBuilder().redirect(context);
            }
        }
    }

    private void cleanRequestedUrl(WebContext context) {
        SessionStore<WebContext> sessionStore = context.getSessionStore();
        if (sessionStore.get(context, Pac4jConstants.REQUESTED_URL) != null) {
            sessionStore.set(context, Pac4jConstants.REQUESTED_URL, "");
        }

    }

    private void cleanAttemptedAuthentication(WebContext context) {
        SessionStore<WebContext> sessionStore = context.getSessionStore();
        if (sessionStore.get(context, this.getName() + ATTEMPTED_AUTHENTICATION_SUFFIX) != null) {
            sessionStore.set(context, this.getName() + ATTEMPTED_AUTHENTICATION_SUFFIX, "");
        }

    }

}

/**
 * @author gongtao
 * @version 2018-07-05 15:30
 **/
public class CallbackFilter extends io.buji.pac4j.filter.CallbackFilter {

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        super.doFilter(servletRequest, servletResponse, filterChain);
    }
}

CallbackFilter 是单点登录后回调使用的过滤器。

/**
 * 认证与授权
 * @author gongtao
 * @version 2018-03-30 13:55
 **/
public class CasRealm extends Pac4jRealm {

    private String clientName;

    /**
     * 认证
     * @param authenticationToken
     * @return
     * @throws AuthenticationException
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
        final Pac4jToken pac4jToken = (Pac4jToken) authenticationToken;
        final List<CommonProfile> commonProfileList = pac4jToken.getProfiles();
　　　　 final CommonProfile commonProfile = commonProfileList.get(0);
        System.out.println("单点登录返回的信息" + commonProfile.toString());
        //todo
        final Pac4jPrincipal principal = new Pac4jPrincipal(commonProfileList, getPrincipalNameAttribute());
        final PrincipalCollection principalCollection = new SimplePrincipalCollection(principal, getName());
        return new SimpleAuthenticationInfo(principalCollection, commonProfileList.hashCode());
    }

    /**
     * 授权/验权（todo 后续有权限在此增加）
     * @param principals
     * @return
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
        SimpleAuthorizationInfo authInfo = new SimpleAuthorizationInfo();
        authInfo.addStringPermission("user");
        return authInfo;
    }
}

CasRealm 这个就是和之前  shiro  的 CasRealm  一样了。

最后就是  application.yml 的配置了。

#cas配置
cas:
  client-name: mfgClient
  server:
    url: http://127.0.0.1:8080/cas
  project:
    url: http://127.0.0.1:8081

参考： https://blog.csdn.net/hxm_code/article/details/79226456

参考：https://github.com/bujiio/buji-pac4j

参考：https://github.com/pac4j/pac4j