spring boot整合CAS Client实现单点登陆验证的示例

介绍一下如何使用Spring Boot整合CAS Client实现单点登录验证。

准备工作

1. 在maven或gradle中引入Spring Boot Cas Starter。
2. 配置CAS Server地址。

示例一：配置客户端登录方式

1. 配置CAS Client，添加以下配置：

cas:
  server-url-prefix: https://cas.server.com 
  server-login-url: https://cas.server.com/login 
  client-host-url: https://your.client.com 
  client-login-path: /login 

1. 构建CAS Filter：

@Bean
public FilterRegistrationBean casValidationFilter() {
  FilterRegistrationBean registration = new FilterRegistrationBean();
  registration.setFilter(new Cas20ProxyReceivingTicketValidationFilter());
  registration.addUrlPatterns("/*");
  registration.setName("casValidationFilter");
  registration.setOrder(1);
  registration.addInitParameter("casServerUrlPrefix", casServerUrlPrefix);
  registration.addInitParameter("serverName", clientHostUrl);
  return registration;
}

@Bean
public FilterRegistrationBean casAuthenticationFilter() {
  FilterRegistrationBean registration = new FilterRegistrationBean();
  registration.setFilter(new AuthenticationFilter());
  registration.addUrlPatterns("/*");
  registration.setName("casAuthenticationFilter");
  registration.setOrder(2);
  registration.addInitParameter("casServerLoginUrl", casServerLoginUrl);
  registration.addInitParameter("serverName", clientHostUrl);
  registration.addInitParameter("ignorePattern", "^/logout/*");
  return registration;
}

@Bean
public FilterRegistrationBean singleSignOutFilter() {
  FilterRegistrationBean registration = new FilterRegistrationBean();
  registration.setFilter(new SingleSignOutFilter());
  registration.addUrlPatterns("/*");
  registration.setName("singleSignOutFilter");
  registration.setOrder(3);
  return registration;
}

@Bean
public ServletListenerRegistrationBean<SingleSignOutHttpSessionListener> singleSignOutHttpSessionListener() {
  ServletListenerRegistrationBean<SingleSignOutHttpSessionListener> listenerRegistrationBean =
      new ServletListenerRegistrationBean<>();
  listenerRegistrationBean.setListener(new SingleSignOutHttpSessionListener());
  return listenerRegistrationBean;
}

示例二：配置服务端登录方式

1. 配置CAS Client，添加以下配置：

cas:
  server-url-prefix: https://cas.server.com 
  service:
    url: https://your.client.com 

1. 添加过滤器：

@Bean
public FilterRegistrationBean casValidationFilter() {
  FilterRegistrationBean registration = new FilterRegistrationBean();
  registration.setFilter(new Cas20ProxyReceivingTicketValidationFilter());
  registration.addUrlPatterns("/*");
  registration.setName("casValidationFilter");
  registration.setOrder(1);
  registration.addInitParameter("casServerUrlPrefix", casServerUrlPrefix);
  registration.addInitParameter("serverName", clientHostUrl);
  return registration;
}

@Bean
public FilterRegistrationBean casAuthenticationFilter() {
  FilterRegistrationBean registration = new FilterRegistrationBean();
  registration.setFilter(new AuthenticationFilter());
  registration.addUrlPatterns("/*");
  registration.setName("casAuthenticationFilter");
  registration.setOrder(2);
  registration.addInitParameter("casServerLoginUrl", casServerLoginUrl);
  registration.addInitParameter("serverName", clientHostUrl);
  registration.addInitParameter("ignorePattern", "^/logout/*");
  return registration;
}

@Bean
public ServletListenerRegistrationBean<SingleSignOutHttpSessionListener> singleSignOutHttpSessionListener() {
  ServletListenerRegistrationBean<SingleSignOutHttpSessionListener> listenerRegistrationBean =
      new ServletListenerRegistrationBean<>();
  listenerRegistrationBean.setListener(new SingleSignOutHttpSessionListener());
  return listenerRegistrationBean;
}

以上就是Spring Boot整合CAS Client实现单点登陆验证的示例。过程中，我们提供了两个示例，分别是配置客户端登录方式和配置服务端登录方式。如果您对CAS的使用还有疑问，可以查看官方文档。