cas 单点登录

学习链接:

https://blog.csdn.net/qq_24708791/article/details/78535565

https://mianhuaman.iteye.com/blog/2224250

https://blog.csdn.net/ae6623/article/details/9494601

https://www.cnblogs.com/vhua/p/cas_4.html

1. 配置cas.server

修改服务ip  server.name=http://localhost:8080

Cas服务端其实就是一个war包。

在资源cassourcecas-server-4.0.0-releasecas-server-4.0.0modules目录下

cas-server-webapp-4.0.0.war  将其改名为cas.war放入tomcat目录下的webapps下。启动tomcat自动解压war包。浏览器输入http://localhost:8080/cas/login  ，可看到登录页面

固定的用户名和密码4.0 casuser /Mellon       3.5 admin/admin

2. 将cas.client相关的jar 放在项目的lib中

3. 在web.xm中配置认证校验 (注意过滤器顺序,最后放在最后面)

    <!-------------SSO ----------------->
<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>
  <listener>
    <listener-class>org.jasig.cas.client.session.SingleSignOutHttpSessionListener</listener-class>
  </listener>
  <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://10.56.2.53/cas/login</param-value>
    </init-param>
    <init-param>
      <param-name>serverName</param-name>
      <param-value>http://10.68.2.123:8080</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>http://10.56.99.53/cas</param-value>
    </init-param>
    <init-param>
      <param-name>serverName</param-name>
      <param-value>http://10.68.2.123:8080</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>
    <!----------end------------->

4. 获取用户名(三种方式)

4.1  getUserPrincipal()

AttributePrincipal  principal = (AttributePrincipal) request.getUserPrincipal();

String username = principal.getName();

4.2  getRemoteUser()

<%

String loginName1 = request.getRemoteUser();

%>

<br>request.getRemoteUser(): <%=loginName1%>;<br/>

4.3 session 中获取

<%

    Object object =request.getSession().getAttribute("_const_cas_assertion_");

    Assertion assertion =(Assertion)object;

    String loginName3 =assertion.getPrincipal().getName();

%>

request.getSession().getAttribute("_const_cas_assertion_").getPrincipal().getName():<%=loginName3%><br/>

4.4 获取其他信息

<%
 
    String loginUser= request.getRemoteUser();
    if (StringUtils.isBlank(loginUser)) {
        loginUser = request.getParameter("user");

    }
    String requestURI=request.getRequestURI();
    
    boolean ssoFlag=false;
      if (StringUtils.isNotBlank(request.getRemoteUser())) {
          //如果是单点进入，
         ssoFlag=true;
      }
%>
<script>
    var ssoFlag = "<%=ssoFlag%>";
    var requestURI = "<%=requestURI%>";
</script>

5.单点退出

cas server 3.5

在Cas-Server项目的cas-servlet.xml中，找到

 <bean id="logoutController" class="org.jasig.cas.web.LogoutController"
        p:centralAuthenticationService-ref="centralAuthenticationService"
        p:logoutView="casLogoutView"
        p:followServiceRedirects="true"
        p:warnCookieGenerator-ref="warnCookieGenerator"
        p:ticketGrantingTicketCookieGenerator-ref="ticketGrantingTicketCookieGenerator" />

界面的注销连接到CAS的logout地址，如http://localhost:8080/cas/logout  完事

备注：如果直接访问CAS的logout话，会出现注销成功页面，其实大部分情况下这个页面是没有必要的，更多的需求可能是退出后显示登录页面，并且登录成功后还是会进入到之前的业务系统，那么可以修改cas-servlet.xml文件，在"logoutController"的bean配置中增加属性“followServiceRedirects”，设置为“true”，然后在业务系统的注销连接中加入"service参数",值为业务系统的绝对URL，这样就OK了，如你的业务系统URL为：http://localhost:8080/casClient，那么注销URL就为：http://localhost:8080/cas/logout?service=http://localhost:8080/casClient

function logout() {
            window.location.href = "http://localhost/cas/logout?service=http://ip:8080/C1-Planning/login.jsp";
        }

https://www.cnblogs.com/notDog/p/5276638.html

cas server 4.0

https://blog.csdn.net/qq_24708791/article/details/78535565

6.CAS不拦截指定url过滤

https://my.oschina.net/ytliyang/blog/832644

7.spring boot配置Cas单点登录

https://github.com/apereo/cas-overlay-template/tree/5.3
https://blog.csdn.net/shunhua19881987/article/details/72724169

https://blog.csdn.net/lhc0512/article/details/82466246

https://www.cnblogs.com/tjudzj/p/10187626.html