Pac4j 简介

Pac4j与Shiro，Spring Security一样都是权限框架，并且提供了OAuth - SAML - CAS - OpenID Connect - HTTP - OpenID - Google App Engine - Kerberos (SPNEGO) 的认证集成。且可以和shiro,security等权限框架集成。

Pac4j CAS认证流程

代码 关键部分

说明: pac4j-cas与shiro的集成是通过过滤器完成cas认证，提供相应的Pac4jRealm来与shiro集成。代码过多就不一一列出了，详细的请下载附件，附件中代码屏蔽了公司相关代码。自身项目需要保持CAS与非CAS并存所以把CAS登录固定到指定路径了。

POM

<!--cas认证 -->
        <dependency>
            <groupId>org.pac4j</groupId>
            <artifactId>pac4j-cas</artifactId>
            <version>3.8.3</version>
        </dependency>
<!-- pac4j与shiro集成-->
        <dependency>
            <groupId>io.buji</groupId>
            <artifactId>buji-pac4j</artifactId>
            <version>4.1.1</version>
        </dependency>

JAVA配置

//Pac4jConfig.java 配置中
 @Bean
 public CasConfiguration casConfig() {
  final CasConfiguration configuration = new CasConfiguration();
  //CAS server登录地址
  configuration.setLoginUrl(casServerUrl + "/login");
  configuration.setAcceptAnyProxy(true);
  configuration.setPrefixUrl(casServerUrl + "/");
  //监控CAS服务端登出，登出后销毁本地session实现双向登出
  DefaultLogoutHandler logoutHandler = new DefaultLogoutHandler();
  logoutHandler.setDestroySession(true);
  configuration.setLogoutHandler(logoutHandler);
  return configuration;
 }
//ShiroConfig.java 中
//shiro 过滤器配置中增加SecurityFilter，CallbackFilter ，LogoutFilter 
 @Bean("shiroFilter")
 public ShiroFilterFactoryBean shirFilter(SecurityManager securityManager) {
  ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
  shiroFilterFactoryBean.setSecurityManager(securityManager);
  //获取filters
  Map<String, Filter> filters = shiroFilterFactoryBean.getFilters();
  filters.put("authc", new MySystemFilter());
  // cas 资源认证拦截器
  SecurityFilter securityFilter = new SecurityFilter();
  securityFilter.setConfig(exPac4jConfig);
  securityFilter.setClients(clientName);
  filters.put("securityFilter", securityFilter);
  //cas 认证后回调拦截器
  CallbackFilter callbackFilter = new CallbackFilter();
  callbackFilter.setConfig(exPac4jConfig);
  filters.put("callbackFilter", callbackFilter);
  shiroFilterFactoryBean.setFilters(filters);
  // 本地登出同步登出CAS服务器
  LogoutFilter pac4jCentralLogout = new LogoutFilter();
  pac4jCentralLogout.setConfig(exPac4jConfig);
  pac4jCentralLogout.setCentralLogout(true);
  pac4jCentralLogout.setLocalLogout(true);
  filters.put("pac4jCentralLogout", pac4jCentralLogout);
  //拦截器.
  Map<String, String> filterChainDefinitionMap = new LinkedHashMap<String, String>();
  filterChainDefinitionMap.put("/logout", "logout");
  filterChainDefinitionMap.put("/pac4jCentralLogout", "pac4jCentralLogout");
  filterChainDefinitionMap.put("/cas", "securityFilter");
  filterChainDefinitionMap.put("/callback", "callbackFilter");
  filterChainDefinitionMap.put("/**", "authc");
  shiroFilterFactoryBean.setLoginUrl("/login");
  shiroFilterFactoryBean.setSuccessUrl("index");
  shiroFilterFactoryBean.setUnauthorizedUrl("/error/403");
  shiroFilterFactoryBean.setFilterChainDefinitionMap(filterChainDefinitionMap);
  return shiroFilterFactoryBean;
 }
 @Bean
 public SecurityManager securityManager() {
  DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
  securityManager.setAuthenticator(exModularRealmAuthenticator());
  List<Realm> realms = new ArrayList<>();
  realms.add(exSystemRealm());
 // casRealm继承Pac4jRealm 与shiro的Realm使用方法相同
  realms.add(casRealm);
  securityManager.setRealms(realms);
  securityManager.setCacheManager(redisCacheManager());
 //增加pac4jSubjectFactory
  securityManager.setSubjectFactory(pac4jSubjectFactory);
  securityManager.setRememberMeManager(cookieRememberMeManager());
  securityManager.setSessionManager(sessionManager());
  return securityManager;
 }

问题

• 默认配置不支持CAS登出本地项目退出

重写ShiroSessionStore见ExShiroSessionStore.java

附件：链接: https://pan.baidu.com/s/1E-6uTYpOFn2ldAxd_k0XvQ 提取码: 8nhx

参考资料

https://www.cnblogs.com/suiyueqiannian/p/9359597.html

http://www.pac4j.org/docs/index.html

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

https://github.com/gkaigk1987/shiro-pac4j-cas-demo