CAS SSO研究一：抛弃Https让Cas以Http协议提供单点登录服务

Posted 2022-11-09 ycyk_168

本文环境：

1、apache-tomcat-7.0.50-windows-x86

2、cas-server-3.4.11

3、cas-client-3.2.1

将cas-server-webapp-3.4.11.war放入tomcat的webapps下，改名ROOT.war，启动tomcat，待自动解压后，进行如下修改：

1、修改WEB-INF\\deployerConfigContext.xml，加入

 p:requireSecure="false"

<property name="authenticationHandlers">
			<list>
				<!--
					| This is the authentication handler that authenticates services by means of callback via SSL, thereby validating
					| a server side SSL certificate.
					+-->
				<bean class="org.jasig.cas.authentication.handler.support.HttpBasedServiceCredentialsAuthenticationHandler"
					p:httpClient-ref="httpClient" p:requireSecure="false"/>
				<!--
					| This is the authentication handler declaration that every CAS deployer will need to change before deploying CAS 
					| into production.  The default SimpleTestUsernamePasswordAuthenticationHandler authenticates UsernamePasswordCredentials
					| where the username equals the password.  You will need to replace this with an AuthenticationHandler that implements your
					| local authentication strategy.  You might accomplish this by coding a new such handler and declaring
					| edu.someschool.its.cas.MySpecialHandler here, or you might use one of the handlers provided in the adaptors modules.
					+-->
				<bean
					class="org.jasig.cas.authentication.handler.support.SimpleTestUsernamePasswordAuthenticationHandler" />
			</list>
		</property>

2、修改WEB-INF\\spring-configuration\\ticketGrantingTicketCookieGenerator.xml，修改p:cookieSecure="false"

	<bean id="ticketGrantingTicketCookieGenerator" class="org.jasig.cas.web.support.CookieRetrievingCookieGenerator"
		p:cookieSecure="false"
		p:cookieMaxAge="-1"
		p:cookieName="CASTGC"
		p:cookiePath="/cas" />

3、修改修改WEB-INF\\spring-configuration\\warnCookieGenerator.xml，修改p:cookieSecure="false"

	<bean id="warnCookieGenerator" class="org.jasig.cas.web.support.CookieRetrievingCookieGenerator"
		p:cookieSecure="false"
		p:cookieMaxAge="-1"
		p:cookieName="CASPRIVACY"
		p:cookiePath="/cas" />

经过以上三步，cas server端修改完毕

客户端操作我习惯进行一下域名/IP映射，修改：C:\\Windows\\System32\\drivers\\etc\\hosts 添加如下映射

127.0.0.1 cas.jkkl1314.com
127.0.0.1 c1.jkkl1314.com
127.0.0.1 c2.jkkl1314.com

在客户端项目中加入cas-client-core-3.2.1.jar、commons-logging.jar，并在web.xml中加入：

<!-- ======================== 单点登录开始 ======================== -->
		<!-- 用于单点退出，该过滤器用于实现单点登出功能，可选配置-->
		<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>

		<filter>
			<filter-name>CAS Filter</filter-name>
			<filter-class>org.jasig.cas.client.authentication.AuthenticationFilter</filter-class>
			<init-param>
				<param-name>casServerLoginUrl</param-name>
				<param-value>http://cas.jkkl1314.com:10000</param-value>
			</init-param>
			<init-param>
				<param-name>serverName</param-name>
				<param-value>http://c1.jkkl1314.com:8080</param-value>
			</init-param>
		</filter>
		<filter-mapping>
			<filter-name>CAS Filter</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>http://cas.jkkl1314.com:10000</param-value>
			</init-param>
			<init-param>
				<param-name>serverName</param-name>
				<param-value>http://c1.jkkl1314.com:8080</param-value>
			</init-param>
		</filter>
		<filter-mapping>
			<filter-name>CAS Validation Filter</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>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>

    <!--
		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。
		比如AssertionHolder.getAssertion().getPrincipal().getName()。
		-->
		<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>

		<!-- ======================== 单点登录结束 ======================== -->

第二个客户端项目只是修改了一下域名，在web.xml中加入的配置是一样的！运行后即可实现单点登录！

以下两边文章对我帮助很大，特此感谢：

http://www.micmiu.com/enterprise-app/sso/sso-cas-sample/

http://blog.csdn.net/designlife/article/details/2956814