cas 服务端返回多用户信息 cas客户端获取不到用户信息的解决

<!-- 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>.Cas20ProxyReceivingTicketValidationFilter</filter-class>
        <init-param>
            <param-name>casServerUrlPrefix</param-name>
            <param-value>http://localhost:8080/bgerp</param-value>
        </init-param>
        <init-param>
            <param-name>serverName</param-name>
            <param-value>http://localhost:8080</param-value>
        </init-param>
        <init-param>
            <param-name>redirectAfterValidation</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>