How to Integrate Central Authentication Service(CAS) with Spring

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:security="http://www.springframework.org/schema/security"
	xmlns:util="http://www.springframework.org/schema/util"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
						http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-2.0.2.xsd
						http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.5.xsd">
 
 
	<bean id="filterChainProxy" class="org.springframework.security.util.FilterChainProxy">
		<security:filter-chain-map path-type="ant">
			<security:filter-chain filters="httpSessionContextIntegrationFilter,casSingleSignOutFilter,casProcessingFilter,securityContextHolderAwareRequestFilter,exceptionTranslationFilter,filterInvocationInterceptor" pattern="/secured/*"/>
		</security:filter-chain-map>
	</bean>
 
 
 
 
	<bean id="exceptionTranslationFilter" class="org.springframework.security.ui.ExceptionTranslationFilter">
		<property name="authenticationEntryPoint" ref="casProcessingFilterEntryPoint"/>
	</bean>	
 
 
	<bean id="casProcessingFilterEntryPoint" class="org.springframework.security.ui.cas.CasProcessingFilterEntryPoint">
	  <property name="loginUrl" value="https://localhost:9443/cas/login"/>
	  <property name="serviceProperties" ref="serviceProperties"/>
	</bean>
 
	 <!-- defines which roles are allowed to access http resources -->
    <bean id="filterInvocationInterceptor" class="org.springframework.security.intercept.web.FilterSecurityInterceptor">
        <property name="authenticationManager" ref="authenticationManager"/>
        <property name="accessDecisionManager" ref="accessDecisionManager"/>
        <property name="objectDefinitionSource">
            <value>
                PATTERN_TYPE_APACHE_ANT
                /**=ROLE_ANONYMOUS
            </value>
        </property>
    </bean>
 
 
    <!-- hooks up CAS ticket validator and user details loader -->
    <bean id="authenticationManager" class="org.springframework.security.providers.ProviderManager">
        <property name="providers">
            <list>
                <ref bean="casAuthenticationProvider"/>
            </list>
        </property>
    </bean>
 
 
    <!-- supporting class for filterInvocationInterceptor -->
    <bean id="accessDecisionManager" class="org.springframework.security.vote.AffirmativeBased">
        <property name="allowIfAllAbstainDecisions" value="false"/>
        <property name="decisionVoters">
            <list>
                <ref local="roleVoter"/>
            </list>
        </property>
    </bean>
 
    <bean id="roleVoter" class="org.springframework.security.vote.RoleVoter">
        <property name="rolePrefix" value="ROLE"/>
    </bean>
 
	<!--  Which Application is using the CAS Service -->
	<bean id="serviceProperties" class="org.springframework.security.ui.cas.ServiceProperties">
 
		<property name="service" value="http://localhost:8080/AppServer/j_spring_cas_security_check"/>
	    <property name="sendRenew" value="false"/>
    </bean>
 
 
    <!-- handles a logout request from the CAS server -->
    <bean id="casSingleSignOutFilter" class="org.jasig.cas.client.session.SingleSignOutFilter"/>
 
 
    <bean id="casProcessingFilter" class="org.springframework.security.ui.cas.CasProcessingFilter">
	  <security:custom-filter after="CAS_PROCESSING_FILTER"/>
	  <property name="authenticationManager" ref="authenticationManager"/>
	  <property name="authenticationFailureUrl" value="/jsp/accessdenied.html"/>
	  <property name="alwaysUseDefaultTargetUrl" value="false"/>
	  <property name="defaultTargetUrl" value="/"/>
	</bean>
 
 
   	<bean id="casAuthenticationProvider" class="org.springframework.security.providers.cas.CasAuthenticationProvider">
    	<property name="userDetailsService" ref="userDao"/>
    	<property name="serviceProperties" ref="serviceProperties" />
    	<property name="ticketValidator">
	      	<bean class="org.jasig.cas.client.validation.Cas20ServiceTicketValidator">
		        <constructor-arg index="0" value="https://localhost:9443/cas" />
	       	</bean>
    	</property>
    	<property name="key" value="casAuthProvider"/>
  	</bean>
 
	 <!-- Invoked when the user clicks logout -->
    <bean id="logoutFilter" class="org.springframework.security.ui.logout.LogoutFilter">
        <!-- URL redirected to after logout success -->
        <constructor-arg value="https://localhost:9443/cas/logout"/>
        <constructor-arg>
            <list>
                <bean class="org.springframework.security.ui.logout.SecurityContextLogoutHandler">
                    <property name="invalidateHttpSession" value="false"/>
                </bean>
            </list>
        </constructor-arg>
    </bean>
 
	 <!-- Log failed authentication attempts to commons-logging -->
    <bean id="loggerListener" class="org.springframework.security.event.authentication.LoggerListener"/>
 
    <bean id="httpSessionContextIntegrationFilter"
          class="org.springframework.security.context.HttpSessionContextIntegrationFilter"/>
 
    <bean id="securityContextHolderAwareRequestFilter"
          class="org.springframework.security.wrapper.SecurityContextHolderAwareRequestFilter"/>
 
 
</beans>