本文介紹了spring boot整合CAS Client實現單點登陸驗證的示例，分享給大家，也給自己留個筆記，具體如下：
單點登錄（ Single Sign-On , 簡稱SSO ）是目前比較流行的服務於企業業務整合的解決方案之一， SSO 使得在多個應用系統中，用戶只需要登錄一次就可以訪問所有相互信任的應用系統。
CAS Client
負責處理對客戶端受保護資源的訪問請求，需要對請求方進行身份認證時，重定向到CAS Server 進行認證。 （原則上，客戶端應用不再接受任何的用戶名密碼等Credentials ）。
實現方式一：使用第三方的starter
1、依賴的jar
<dependency> <groupId>net.unicon.cas</groupId> <artifactId>cas-client-autoconfig-support</artifactId> <version>1.4.0-GA</version> </dependency>
2、增加配置文件
cas.server-url-prefix=http://127.0.0.1 cas.server-login-url=http://127.0.0.1/login cas.client-host-url=http://192.26.4.28:8080 cas.validation-type=CAS
3、開啟CAS Client支持
@SpringBootApplication @ComponentScan(basePackages={"com.chhliu.emailservice"}) @EnableCasClient // 開啟CAS支持public class Application extends SpringBootServletInitializer{ public static void main(String[] args) { SpringApplication.run(Application.class, args); } }通過上面的3步，就可以完成CAS的客戶端認證了！
4、擴展
cas.validation-type目前支持3中方式：1、CAS；2、CAS3；3、SAML
其他可用的配置如下：
cas.authentication-url-patterns cas.validation-url-patterns cas.request-wrapper-url-patterns cas.assertion-thread-local-url-patterns cas.gateway cas.use-session cas.redirect-after-validation cas.allowed-proxy-chains cas.proxy-callback-url cas.proxy-receptor-url cas.accept-any-proxy server.context-parameters.renew
具體的含義從名字上就可以很清楚的看出來。
實現方式二：手動配置
我們原來使用CAS Client，需要在web.xml中做如下配置：
<filter> <filter-name>authenticationFilter</filter-name> <filter-class>org.jasig.cas.client.authentication.AuthenticationFilter</filter-class> <init-param> <param-name>casServerLoginUrl</param-name> <param-value>http://127.0.0.1/login</param-value> </init-param> <init-param> <param-name>serverName</param-name> <param-value>http://192.26.4.28:8080</param-value> </init-param> </filter> <filter-mapping> <filter-name>authenticationFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 該過濾器負責對Ticket的校驗工作，必須啟用它--> <filter> <filter-name>validationFilter</filter-name> <filter-class>org.jasig.cas.client.validation.Cas20ProxyReceivingTicketValidationFilter</filter-class> <init-param> <param-name>casServerUrlPrefix</param-name> <param-value>http://127.0.0.1</param-value> </init-param> <init-param> <param-name>serverName</param-name> <param-value>http://192.26.4.28:8080</param-value> </init-param> <!-- <init-param> <param-name>redirectAfterValidation</param-name> <param-value>true</param-value> </init-param> <init-param> <param-name>useSession</param-name> <param-value>true</param-value> </init-param> --> </filter> <filter-mapping> <filter-name>validationFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 該過濾器負責實現HttpServletRequest請求的包裹， 比如允許開發者通過HttpServletRequest的getRemoteUser()方法獲得SSO登錄用戶的登錄名，可選配置。 --> <filter> <filter-name>httpServletRequestWrapperFilter</filter-name> <filter-class>org.jasig.cas.client.util.HttpServletRequestWrapperFilter</filter-class> </filter> <filter-mapping> <filter-name>httpServletRequestWrapperFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
所以，我們手動配置的時候，需要手動配置上面xml中對應的Filter，代碼如下：
@Configuration @Component public class CasConfigure { @Bean public FilterRegistrationBean authenticationFilterRegistrationBean() { FilterRegistrationBean authenticationFilter = new FilterRegistrationBean(); authenticationFilter.setFilter(new AuthenticationFilter()); Map<String, String> initParameters = new HashMap<String, String>(); initParameters.put("casServerLoginUrl", "http://127.0.0.1/login"); initParameters.put("serverName", "http://192.26.4.28:8080"); authenticationFilter.setInitParameters(initParameters); authenticationFilter.setOrder(2); List<String> urlPatterns = new ArrayList<String>(); urlPatterns.add("/*");// 設置匹配的url authenticationFilter.setUrlPatterns(urlPatterns); return authenticationFilter; } @Bean public FilterRegistrationBean ValidationFilterRegistrationBean(){ FilterRegistrationBean authenticationFilter = new FilterRegistrationBean(); authenticationFilter.setFilter(new Cas20ProxyReceivingTicketValidationFilter()); Map<String, String> initParameters = new HashMap<String, String>(); initParameters.put("casServerUrlPrefix", "http://127.0.0.1"); initParameters.put("serverName", "http://192.26.4.28:8080"); authenticationFilter.setInitParameters(initParameters); authenticationFilter.setOrder(1); List<String> urlPatterns = new ArrayList<String>(); urlPatterns.add("/*");// 設置匹配的url authenticationFilter.setUrlPatterns(urlPatterns); return authenticationFilter; } @Bean public FilterRegistrationBean casHttpServletRequestWrapperFilter(){ FilterRegistrationBean authenticationFilter = new FilterRegistrationBean(); authenticationFilter.setFilter(new HttpServletRequestWrapperFilter()); authenticationFilter.setOrder(3); List<String> urlPatterns = new ArrayList<String>(); urlPatterns.add("/*");// 設置匹配的url authenticationFilter.setUrlPatterns(urlPatterns); return authenticationFilter; } @Bean public FilterRegistrationBean casAssertionThreadLocalFilter(){ FilterRegistrationBean authenticationFilter = new FilterRegistrationBean(); authenticationFilter.setFilter(new AssertionThreadLocalFilter()); authenticationFilter.setOrder(4); List<String> urlPatterns = new ArrayList<String>(); urlPatterns.add("/*");// 設置匹配的url authenticationFilter.setUrlPatterns(urlPatterns); return authenticationFilter; } }通過上面的配置，也可以完成CAS Client的認證
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。