spring boot整合CAS Client实现单点登陆验证的示例

本文介绍了spring boot整合CAS Client实现单点登陆验证的示例，分享给大家，也给自己留个笔记，具体如下：

单点登录（ Single Sign-On , 简称 SSO ）是目前比较流行的服务于企业业务整合的解决方案之一， SSO 使得在多个应用系统中，用户只需要 登录一次 就可以访问所有相互信任的应用系统。

CAS Client

负责处理对客户端受保护资源的访问请求，需要对请求方进行身份认证时，重定向到 CAS Server 进行认证。（原则上，客户端应用不再接受任何的用户名密码等 Credentials ）。

实现方式一：使用第三方的starter

1、依赖的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、开启CAS Client支持

@SpringBootApplication
@ComponentScan(basePackages={"com.chhliu.emailservice"})
@EnableCasClient // 开启CAS支持
public class Application extends SpringBootServletInitializer{ 

 public static void main(String[] args) {
 SpringApplication.run(Application.class, args); 

 }
}

通过上面的3步，就可以完成CAS的客户端认证了！

4、扩展

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 

具体的含义从名字上就可以很清楚的看出来。

实现方式二：手动配置

我们原来使用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>
 <!-- 该过滤器负责对Ticket的校验工作，必须启用它 -->
 <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>
 <!-- 该过滤器负责实现HttpServletRequest请求的包裹， 比如允许开发者通过HttpServletRequest的getRemoteUser()方法获得SSO登录用户的登录名，可选配置。 -->
 <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，我们手动配置的时候，需要手动配置上面xml中对应的Filter，代码如下：

@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("/*");// 设置匹配的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("/*");// 设置匹配的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("/*");// 设置匹配的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("/*");// 设置匹配的url
 authenticationFilter.setUrlPatterns(urlPatterns);
 return authenticationFilter;
 }
}

通过上面的配置，也可以完成CAS Client的认证

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。

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