3)CAS SSO单点登录客户端环境搭建

1.准备两个个全新的tomcat8，用来作为sso单点登录的客户端，如下： 

2.修改server.xml文件(因为考虑到端口冲突，所以将里面的端口全部改掉)

@源码地址来源：http://minglisoft.cn/hhcloud

 其中apache-tomcat-client1-8082的端口改成了8082
其中apache-tomcat-client2-8083的端口改成了8083
apache-tomcat-client1-8082添加：

<Host name="sso1.jeesz.cn"  appBase="webapps"
            unpackWARs="true" autoDeploy="true">
apache-tomcat-client1-8083添加：
<Host name="sso2.jeesz.cn"  appBase="webapps"
            unpackWARs="true" autoDeploy="true">

3.创建两个web工程，sso1，sso2，配置web.xml文件如下（这里只以sso1为例，sso2的配置可以在项目中查看）：

<listener>
    <listener-class>org.jasig.cas.client.session.SingleSignOutHttpSessionListener</listener-class>
  </listener>
  <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>https://jeesz.cn:8443/cas/login</param-value>
    </init-param>
    <init-param>
      <param-name>serverName</param-name>
      <param-value>http://sso1.jeesz.cn:8082</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>CAS Filter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <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://jeesz.cn:8443/cas</param-value>
    </init-param>
    <init-param>
      <param-name>serverName</param-name>
      <param-value>http://sso1.jeesz.cn:8082</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>CAS Validation Filter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <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>
  <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>

注意标红色的区域
4.将sso1、sso2两个项目分别打成war包导入到两个tomcat中，分别启动运行,
此时访问：http://sso1.jeesz.cn:8082/sso1会出现一个异常，我们截图用来记录错误

这个错误很明显，我们需要配置当前容器支持http，找到cas项目下的HTTPSandIMAPS-10000001.json文件，路径为：\WEB-INF\classes\services，里面增加http协议支持。

5.重启sso的服务端，再次访问http://sso1.jeesz.cn:8082/sso1(成功跳转)

6.其中sso2的客户端，访问http://sso2.jeesz.cn:8083/sso2(成功跳转)

7.反复用默认账号测试登录登出，访问sso1，sso2应用，可以确认只需要登录一次