cas单点登录配置之client配置（java）

需要登录验证的所有应用都通过在web.xml里面配置filter：

有需要jar包cas-client-core-3.3.3.jar及log相关的jar包

以下filter的配置顺序是固定的不能改变

1. AuthenticationFilter
2. TicketValidationFilter
3. HttpServletRequestWrapperFilter
4. AssertionThreadLocalFilter

用户验证

<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>https://localhost:8443/casweb/login</param-value>（这个local必须与前面证书配置的CN的名字一样）
        </init-param>
        <init-param>
            <param-name>serverName</param-name>
            <param-value>http://yourAppurl:port/</param-value>
        </init-param>
    </filter>
    <filter-mapping>
    <filter-name>CAS Authentication Filter</filter-name>
    <url-pattern>/*</url-pattern>
    </filter-mapping>

ticket验证

<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://localhost:8443/casweb</param-value>（同上）
    </init-param>
    <init-param>
        <param-name>serverName</param-name>
        <param-value>http://yourAPPurl:port/</param-value>（如http:www.baidu.com:8080）
    </init-param>
    </filter>
    <filter-mapping>
     <filter-name>CAS Validation Filter</filter-name>
     <url-pattern>/*</url-pattern>
    </filter-mapping>
    <!-- Wraps an HttpServletRequest so that the getRemoteUser and getPrincipal return the CAS related entries. -->
    <filter>

下面两个filter包装后用以通过request来获取用户信息比如获取用户名可以通过request.getUserPrincipal().getName();
    <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>