环境要求

JDK 8+
CAS 5.2
tomcat 8+

步骤

一、搭建CAS服务器 --> CAS（一）搭建CAS - server服务器

二、配置hosts，加入如下配置

127.0.0.1      cas.server.com
127.0.0.1      cas.client1.com

三、搭建SpringMVC项目

项目名为cas-clientA，项目结构如下：

包含三个页面：主页--index.jsp（无需登录），hello页面--hello.jsp（需要登录），退出成功提示页--logoutsuccess.jsp（无需登录）

pom.xml文件配置如下

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.oumuv</groupId><artifactId>cas-clientA</artifactId><version>0.0.1-SNAPSHOT</version><packaging>war</packaging><name>cas-clientA</name><description>cas client A</description><dependencies><dependency><groupId>javax</groupId><artifactId>javaee-web-api</artifactId><version>7.0</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>4.3.9.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>4.3.9.RELEASE</version></dependency><dependency><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId><version>1.1.1</version></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.17</version></dependency><!--cas客户端--><dependency><groupId>org.jasig.cas.client</groupId><artifactId>cas-client-core</artifactId><version>3.4.1</version></dependency></dependencies><build><finalName>cas-sample-java-webapp</finalName><plugins><!--指定jdk版本--><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>3.0</version><configuration><encoding>UTF-8</encoding><source>1.8</source><target>1.8</target></configuration></plugin><plugin><groupId>org.mortbay.jetty</groupId><artifactId>jetty-maven-plugin</artifactId><version>8.1.9.v20130131</version><configuration><connectors><connector implementation="org.eclipse.jetty.server.nio.SelectChannelConnector"><!--端口--><port>9001</port><maxIdleTime>60000</maxIdleTime></connector></connectors></configuration></plugin></plugins></build>
</project>

applicationContext.xml主要配置一下jsp解析器，配置如下：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:context="http://www.springframework.org/schema/context"xmlns:mvc="http://www.springframework.org/schema/mvc"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-4.0.xsd    http://www.springframework.org/schema/context    http://www.springframework.org/schema/context/spring-context-4.0.xsd    http://www.springframework.org/schema/mvc    http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"><!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 --><context:component-scan base-package="com.oumuv"/><!-- 扩充了注解驱动，可以将请求参数绑定到控制器参数 --><mvc:annotation-driven/><!-- 访问静态资源 --><mvc:default-servlet-handler/><bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix" value="/WEB-INF/"/><property name="suffix" value=".jsp"/><property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/></bean></beans>

web.xml配置是重点，cas服务器和客户端的关联需要在此配置：

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"><context-param><param-name>contextConfigLocation</param-name><param-value>classpath:*.xml</param-value></context-param><context-param><param-name>log4jConfigLocation</param-name><param-value>classpath:log4j.properties</param-value></context-param><!-- 上下问监听器 --><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><listener><listener-class>org.springframework.web.util.Log4jConfigListener</listener-class></listener><!-- springMVC --><servlet><servlet-name>SpringMVC</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value>classpath:applicationContext.xml</param-value></init-param><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>SpringMVC</servlet-name><url-pattern>/</url-pattern></servlet-mapping><!--登出过滤器--><filter><filter-name>CAS Single Sign Out Filter</filter-name><filter-class>org.jasig.cas.client.session.SingleSignOutFilter</filter-class><init-param><param-name>casServerUrlPrefix</param-name><param-value>http://cas.server.com:8443/cas</param-value></init-param></filter><!--登出监听器--><listener><listener-class>org.jasig.cas.client.session.SingleSignOutHttpSessionListener</listener-class></listener><!--认证过滤器--><filter><filter-name>CAS Authentication Filter</filter-name><filter-class>org.jasig.cas.client.authentication.AuthenticationFilter</filter-class><init-param><param-name>casServerLoginUrl</param-name><param-value>http://cas.server.com:8443/cas/login</param-value></init-param><init-param><param-name>serverName</param-name><param-value>http://cas.client1.com:9001</param-value></init-param><!--忽略验证的url,多个url使用"|"分割--><init-param><param-name>ignorePattern</param-name><param-value>/logout/success|/index</param-value></init-param></filter><!--ticke验证过滤器--><filter><filter-name>CAS Validation Filter</filter-name><filter-class>org.jasig.cas.client.validation.Cas30ProxyReceivingTicketValidationFilter</filter-class><init-param><param-name>casServerUrlPrefix</param-name><param-value>http://cas.server.com:8443/cas</param-value></init-param><init-param><param-name>serverName</param-name><param-value>http://cas.client1.com:9001</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><init-param><param-name>authn_method</param-name><param-value>mfa-duo</param-value></init-param></filter><!--wrapper过滤器--><filter><filter-name>CAS HttpServletRequest Wrapper Filter</filter-name><filter-class>org.jasig.cas.client.util.HttpServletRequestWrapperFilter</filter-class></filter><filter-mapping><filter-name>CAS Single Sign Out Filter</filter-name><url-pattern>/*</url-pattern></filter-mapping><filter-mapping><filter-name>CAS Validation Filter</filter-name><url-pattern>/*</url-pattern></filter-mapping><filter-mapping><filter-name>CAS Authentication Filter</filter-name><url-pattern>/*</url-pattern></filter-mapping><filter-mapping><filter-name>CAS HttpServletRequest Wrapper Filter</filter-name><url-pattern>/*</url-pattern></filter-mapping><!-- 静态文件处理 --><servlet-mapping><servlet-name>default</servlet-name><url-pattern>*.jpg</url-pattern></servlet-mapping><servlet-mapping><servlet-name>default</servlet-name><url-pattern>*.js</url-pattern></servlet-mapping><servlet-mapping><servlet-name>default</servlet-name><url-pattern>*.css</url-pattern></servlet-mapping>
</web-app>

其中http://cas.server.com:8443是服务端的地址，http://cas.client1.com:9001是客户端地址

CASController.java有两个业务如下：

    /*** 主页* @param map* @return*/@RequestMapping("index")public String index(ModelMap map) {map.addAttribute("name", "clien A");return "index";}/*** hello* @return*/@RequestMapping("hello")public String hello() {return "hello";}

四、启动项目、测试

依次启动CAS-server服务端、CAS-clientA客户端

访问http://cas.client1.com:9001/index进入CAS-clientA主页：

点击client A（http://cas.client1.com:9001/hello），会跳转到cas登录认证页面：

输入账号和密码完成登录后跳转到hello页面：

到此项目搭建完成

单点退出实现请看这里：CAS（五）CAS客户端单点退出实现

代码托管在https://gitee.com/oumuv/cas-Demo

上一篇：CAS（二）CAS服务器动态验证，CAS使用MySQL数据库验证

下一篇：CAS（四）基于Springboot搭建CAS-client，Springboot搭建CAS客户端

希望可以帮助到有需要的人

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