CAS 客户端获取Credentials额外信息

服务端的配置
1、在deployerContext.xml中加上attributeRepository

<bean
					class="org.jasig.cas.authentication.principal.UsernamePasswordCredentialsToPrincipalResolver">
					<property name="attributeRepository" ref="attributeRepository" />
				</bean>

2、配置，这里配置需要从数据库读取的属性，这里参考了这篇http://zxs19861202.iteye.com/blog/890965

<bean id="attributeRepository"
		class="org.jasig.services.persondir.support.jdbc.SingleRowJdbcPersonAttributeDao">
		<constructor-arg index="0" ref="dataSource" />
		<constructor-arg index="1"
			value="select id,email,name  from t_admin_user where  {0} " />
		<property name="queryAttributeMapping">
			<map>
				<entry key="username" value="login_name" />
			</map>
		</property>
		<!-- 要获取的属性在这里配置 -->
		<property name="resultAttributeMapping">
			<map>
				<entry key="email" value="email" />
				<entry key="name" value="name" />
			</map>
		</property>
	</bean>

3、另外由于我用的是http协议，所以还需要配置serviceRegistryDao，让attributeRepository返回信息

  <bean id="serviceRegistryDao" class="org.jasig.cas.services.InMemoryServiceRegistryDaoImpl">
		<property name="registeredServices">
			<list>
				<bean class="org.jasig.cas.services.RegexRegisteredService">
					<property name="id" value="0" />
					<property name="name" value="HTTP" />
					<property name="description" value="Only Allows HTTP Urls" />
					<property name="serviceId" value="^http://.*" />
					<property name="evaluationOrder" value="10000001" />
					<property name="ignoreAttributes" value="true" />
				</bean>
</property>
//...
</bean>

4、最后在/WEB-INF/view/jsp/protocol/2.0/casServiceValidationSuccess.jsp的<cas:user></cas:user>后里加入

<c:if
				test="${fn:length(assertion.chainedAuthentications[fn:length(assertion.chainedAuthentications)-1].principal.attributes) > 0}">
				<cas:attributes>
					<c:forEach var="attr"
						items="${assertion.chainedAuthentications[fn:length(assertion.chainedAuthentications)-1].principal.attributes}"
						varStatus="loopStatus" begin="0"
						end="${fn:length(assertion.chainedAuthentications[fn:length(assertion.chainedAuthentications)-1].principal.attributes)}"
						step="1">
						<cas:attribute>
							<cas:${fn:escapeXml(attr.key)}>${fn:escapeXml(attr.value)}</cas:${fn:escapeXml(attr.key)}>
						</cas:attribute>
					</c:forEach>
				</cas:attributes>
			</c:if>

下面是服务端的配置，主要是web.xml

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
	<display-name>Archetype Created Web Application</display-name>

	<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>http://sso.nbrc.com.cn:8080/cas/login</param-value>
		</init-param>
		<init-param>
			<param-name>serverName</param-name>
			<param-value>http://localhost:8080</param-value>
		</init-param>
	</filter>

	<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://sso.nbrc.com.cn:8080/cas</param-value>
		</init-param>
		<init-param>
			<param-name>serverName</param-name>
			<param-value>http://localhost:8080</param-value>
		</init-param>
		<init-param>
			<param-name>proxyReceptorUrl</param-name>
			<param-value>/proxyCallback</param-value>
		</init-param>
		<init-param>
			<param-name>proxyCallbackUrl</param-name>
			<param-value>http://localhost:8080/client/proxyCallback</param-value>
		</init-param>
	</filter>

	<filter>
		<filter-name>CAS HttpServletRequest Wrapper Filter</filter-name>
		<filter-class>org.jasig.cas.client.util.HttpServletRequestWrapperFilter</filter-class>
	</filter>

	<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 Validation Filter</filter-name>
		<url-pattern>/proxyCallback</url-pattern>
	</filter-mapping>
	
		<filter-mapping>
		<filter-name>CAS Authentication Filter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
	
	<filter-mapping>
		<filter-name>CAS Validation Filter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
	<filter-mapping>
		<filter-name>CAS HttpServletRequest Wrapper Filter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>	
	<filter-mapping>
		<filter-name>CAS Assertion Thread Local Filter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

<listener>
		<listener-class>org.jasig.cas.client.session.SingleSignOutHttpSessionListener</listener-class>
	</listener> 

</web-app>

获取信息的代码

<%
AttributePrincipal pr = (AttributePrincipal) request.getUserPrincipal();
out.println(pr.getName());

out.println(pr.getAttributes().get("email"));
out.println("<hr/>");
out.println(AssertionHolder.getAssertion().getPrincipal().getName());
Map<String,Object> attrs = AssertionHolder.getAssertion().getPrincipal().getAttributes();
for(Map.Entry<String,Object> keyset:attrs.entrySet()){
	out.print(keyset.getKey() + ":" + keyset.getValue() + "<br/>");
}
%>