CasServer配置：
1.用keytool 生成 CasServer 所在主机的证书（keystore），并导出(crt文件)。
2.配置Tomcat server.xml 指明证书位置
CasClient配置：
将CasServer所在主机证书导入CasClient主机jre的受信目录
Casclient应用导入依赖文件。配置web.xml，添加过滤器
注意：
web.xml 请求地址的配置。
web.xml 配置：
<!-- ======================== 单点登录开始 ======================== -->
<listener>
<listener-class>org.jasig.cas.client.session.SingleSignOutHttpSessionListener</listener-class>
</listener>
<!-- 该过滤器用于实现单点登出功能，可选配置。 -->
<filter>
<filter-name>CAS Single Sign Out Filter</filter-name>
<filter-class>org.jasig.cas.client.session.SingleSignOutFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>CAS Single Sign Out Filter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 该过滤器负责用户的认证工作，必须启用它 -->
<filter>
<filter-name>CASFilter</filter-name>
<filter-class>org.jasig.cas.client.authentication.AuthenticationFilter</filter-class>
<init-param>
<param-name>casServerLoginUrl</param-name>
<param-value>https://cas.misquest.com:8443/login</param-value>
<!--这里的server是服务端的IP-->
</init-param>
<init-param>
<param-name>serverName</param-name>
<param-value>http://cas.misquest.com:8080</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CASFilter</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>CAS Validation Filter</filter-name>
<filter-class>
org.jasig.cas.client.validation.Cas20ProxyReceivingTicketValidationFilter</filter-class>
<init-param>
<param-name>casServerUrlPrefix</param-name>
<param-value>https://cas.misquest.com:8443</param-value>
</init-param>
<init-param>
<param-name>serverName</param-name>
<param-value>http://cas.misquest.com:8080</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CAS Validation Filter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--<br>
该过滤器负责实现HttpServletRequest请求的包裹，<br>
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。<br>
-->
<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 HttpServletRequest Wrapper Filter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--<br>
该过滤器使得开发者可以通过org.jasig.cas.client.util.AssertionHolder来获取用户的登录名。<br>
比如AssertionHolder.getAssertion().getPrincipal().getName()。<br>
-->
<filter>
<filter-name>CAS Assertion Thread Local Filter</filter-name>
<filter-class>org.jasig.cas.client.util.AssertionThreadLocalFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>CAS Assertion Thread Local Filter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
pom文件修改：
添加dependency：
<dependency>
<groupId>org.jasig.cas</groupId>
<artifactId>cas-client-core</artifactId>
<version>3.1.10</version>
</dependency>获取登录用户名：
AssertionHolder.getAssertion().getPrincipal().getName();
脚本中包含导入证书关键代码。