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cas單點登錄配置速成

服務(wù)端配置
cas是個好東西，很靈活很好用，但是配置起來很麻煩，網(wǎng)上資料比較零碎。不弄個三五天根本不知道其中的原理，終于在多天的奮斗中配置成功，現(xiàn)在將配置的一些過程記錄下來供大家參考。

cas官方網(wǎng)站

http://www.jasig.org/cas

下載最新的服務(wù)端 CAS Server 3.3.3 Final

解壓后將modules下面的cas-server-webapp-3.3.3.war部署到web服務(wù)器，作為單點登錄的服務(wù)器。

登錄的服務(wù)器下面很多配置文件，通過配置可以做一些擴展。

修改點1：驗證方式使用我們自己的用戶表驗證

cas和當(dāng)前已有的系統(tǒng)做集成的入口

1.修改deployerConfigContext.xml文件

添加數(shù)據(jù)源配置

XML/HTML代碼

<bean id="casDataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName">
<value>com.mysql.jdbc.Driver</value>
</property>
<property name="url">
<value>jdbc:mysql://192.168.1.100/ires?useUnicode=true&characterEncoding=UTF-8&autoReconnect=true</value>
</property>
<property name="username">
<value>ires</value>
</property>
<property name="password">
<value>i709394</value>
</property>
</bean>

定義MD5的加密方式

XML/HTML代碼

<bean id="passwordEncoder"
class="org.jasig.cas.authentication.handler.DefaultPasswordEncoder" autowire="byName">
<constructor-arg value="MD5"/>
</bean>

配置authenticationManager下面的authenticationHandlers屬性

XML/HTML代碼

<bean class="org.jasig.cas.adaptors.jdbc.QueryDatabaseAuthenticationHandler">
<property name="dataSource" ref="casDataSource" />
<property name="sql" value="select community_password from community_user_info where lower(community_user_info.community_user) = lower(?)" />
<property name="passwordEncoder" ref="passwordEncoder"/>
</bean>

修改點2：獲取用戶信息保存，方便各個客戶端可以統(tǒng)一得到用戶信息

1.定義attributeRepository，通過jdbc查詢用戶的詳細信息，可以把用戶表或用戶的所屬組織機構(gòu)或角色等查詢出來。

XML/HTML代碼

<bean id="attributeRepository" class="org.jasig.services.persondir.support.jdbc.SingleRowJdbcPersonAttributeDao">
<constructor-arg index="0" ref="casDataSource" />
<constructor-arg index="1" >
<list>
<value>username</value>
<value>username</value>
</list>
</constructor-arg>
<constructor-arg index="2">
<value>
select * ,(SELECT orgn_organization.id from orgn_organization left join orgn_member on orgn_member.orgn_id = orgn_organization.id left join community_user_info on community_user_info.id = orgn_member.user_id where community_user_info.community_user = ?) as orgnId from community_user_info where community_user=?
</value>
</constructor-arg>
<property name="columnsToAttributes">
<map>
<entry key="id" value="id" />
<entry key="community_user" value="userName" />
<entry key="orgnId" value="orgnId" />
<entry key="is_admin" value="isAdmin" />
</map>
</property>
</bean>

2.配置authenticationManager中credentialsToPrincipalResolvers屬性

XML/HTML代碼

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

注意：默認cas登錄服務(wù)器沒有把用戶信息傳到客戶端中，所以要修改WEB-INF\view\jsp\protocol\2.0\casServiceValidationSuccess.jsp文件，增加

XML/HTML代碼

<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}">
<cas:${fn:escapeXml(attr.key)}>${fn:escapeXml(attr.value)}</cas:${fn:escapeXml(attr.key)}>
</c:forEach>
</cas:attributes>
</c:if>

修改點3：用數(shù)據(jù)庫來保存登錄的會話

這樣服務(wù)器在重新啟動的時候不會丟失會話。

1.修改ticketRegistry.xml文件

將默認的ticketRegistry改成

XML/HTML代碼

<bean id="ticketRegistry" class="org.jasig.cas.ticket.registry.JpaTicketRegistry">
<constructor-arg index="0" ref="entityManagerFactory" />
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="generateDdl" value="true"/>
<property name="showSql" value="true" />
</bean>
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"
p:entityManagerFactory-ref="entityManagerFactory" />
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean
id="dataSource"
class="org.apache.commons.dbcp.BasicDataSource"
p:driverClassName="com.mysql.jdbc.Driver"
p:url="jdbc:mysql://192.168.1.100:3306/cas?useUnicode=true&characterEncoding=UTF-8&autoReconnect=true"
p:password="709394"
p:username="itravel" />

配置完之后還需要一些jar的支持，根據(jù)提示那些包缺少到網(wǎng)上找。

修改點4：配置remenber me的功能，可以讓客戶端永久保存session

1.修改deployerConfigContext.xml文件

authenticationManager增加authenticationMetaDataPopulators屬性

XML/HTML代碼

<property name="authenticationMetaDataPopulators">
<list>
<bean class="org.jasig.cas.authentication.principal.RememberMeAuthenticationMetaDataPopulator" />
</list>
</property>

2.修改cas-servlet.xml

修改authenticationViaFormAction配置變成

XML/HTML代碼

<bean id="authenticationViaFormAction" class="org.jasig.cas.web.flow.AuthenticationViaFormAction"
p:centralAuthenticationService-ref="centralAuthenticationService"
p:formObjectClass="org.jasig.cas.authentication.principal.RememberMeUsernamePasswordCredentials"
p:formObjectName="credentials"
p:validator-ref="UsernamePasswordCredentialsValidator"
p:warnCookieGenerator-ref="warnCookieGenerator" />

增加UsernamePasswordCredentialsValidator

XML/HTML代碼

<bean id="UsernamePasswordCredentialsValidator" class="org.jasig.cas.validation.UsernamePasswordCredentialsValidator" />

修改ticketExpirationPolicies.xml，grantingTicketExpirationPolicy配置如下，注意時間要加大，不然session很容易過期，達不到remember me的效果。

XML/HTML代碼

<bean id="grantingTicketExpirationPolicy" class="org.jasig.cas.ticket.support.RememberMeDelegatingExpirationPolicy">
<property name="sessionExpirationPolicy">
<bean class="org.jasig.cas.ticket.support.TimeoutExpirationPolicy">
<constructor-arg index="0" value="2592000000" />
</bean>
</property>
<property name="rememberMeExpirationPolicy">
<bean class="org.jasig.cas.ticket.support.TimeoutExpirationPolicy">
<constructor-arg index="0" value="2592000000" />
</bean>
</property>
</bean>

登錄頁面要增加隱藏字段rememberMe，值是true，或用一個checkbox來勾選。

修改點5：取消https驗證

在網(wǎng)絡(luò)安全性較好，對系統(tǒng)安全沒有那么高的情況下可以取消https驗證，使系統(tǒng)更加容易部署。

1.修改ticketGrantingTicketCookieGenerator.xml

XML/HTML代碼

<bean id="ticketGrantingTicketCookieGenerator" class="org.jasig.cas.web.support.CookieRetrievingCookieGenerator"
p:cookieSecure="false"
p:cookieMaxAge="-1"
p:cookieName="CASTGC"
p:cookiePath="/cas" />

p:cookieSecure改成false，客戶端web.xml中單獨服務(wù)器的鏈接改成http

使用https協(xié)議的配置

1.證書生成和導(dǎo)入

下面是一個生成證書和導(dǎo)入證書的bat腳本，如果web應(yīng)用和單獨登錄服務(wù)器部署在同一臺機可以一起執(zhí)行

C++代碼

@echo off
if "%JAVA_HOME%" == "" goto error
@echo on
@echo off
cls
rem please set the env JAVA_HOME before run this bat file
rem delete alia tomcat if it is existed
keytool -delete -alias tomcatsso -keystore "%JAVA_HOME%/jre/lib/security/cacerts" -storepass changeit
keytool -delete -alias tomcatsso -storepass changeit
REM （注釋：清除系統(tǒng)中可能存在的名字為tomcatsso 的同名證書）
rem list all alias in the cacerts
keytool -list -keystore "%JAVA_HOME%/jre/lib/security/cacerts" -storepass changeit
REM （注釋：列出系統(tǒng)證書倉庫中存在證書名稱列表）
rem generator a key
keytool -genkey -keyalg RSA -alias tomcatsso -dname "cn=localhost" -storepass changeit
REM （注釋：指定使用RSA算法，生成別名為tomcatsso的證書，存貯口令為changeit，證書的DN為"cn=linly" ，這個DN必須同當(dāng)前主機完整名稱一致哦，切記！?。。?
rem export the key
keytool -export -alias tomcatsso -file "%java_home%/jre/lib/security/tomcatsso.crt" -storepass changeit
REM （注釋：從keystore中導(dǎo)出別名為tomcatsso的證書，生成文件tomcatsso.crt）
rem import into trust cacerts
keytool -import -alias tomcatsso -file "%java_home%/jre/lib/security/tomcatsso.crt" -keystore "%java_home%/jre/lib/security/cacerts" -storepass changeit
REM （注釋：將tomcatsso.crt導(dǎo)入jre的可信任證書倉庫。注意，安裝JDK是有兩個jre目錄，一個在jdk底下，一個是獨立的jre，這里的目錄必須同Tomcat使用的jre目錄一致，否則后面Tomcat的HTTPS通訊就找不到證書了）
rem list all alias in the cacerts
keytool -list -keystore "%JAVA_HOME%/jre/lib/security/cacerts" -storepass changeit
pause
:error
echo 請先設(shè)置JAVA_HOME環(huán)境變量
:end

3.將.keystore文件拷貝到tomcat的conf目錄下面，注意.keystore會在證書生成的時候生成到系統(tǒng)的用戶文件夾中，如windows會生產(chǎn)到C:\Documents and Settings\[yourusername]\下面

2.配置tomcat，把https協(xié)議的8443端口打開，指定證書的位置。

XML/HTML代碼

<Connector port="8443" maxHttpHeaderSize="8192"
maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" disableUploadTimeout="true"
acceptCount="100" scheme="https" secure="true"
clientAuth="false" sslProtocol="TLS"
keystoreFile="conf/.keystore" keystorePass="changeit" truststoreFile="C:\Program Files\Java\jdk1.5.0_07\jre\lib\security\cacerts"/>

客戶端配置

cas官方網(wǎng)站上面的客戶端下載地址比較隱秘，沒有完全公開，具體地址為

http://www.ja-sig.org/downloads/cas-clients/

下載最新的cas-client-3.1.6-release.zip

1.解壓后把modules下面的包放到我們的web應(yīng)用中

2.配置web.xml,注意encodingFilter要提前配置，不然會出現(xiàn)數(shù)據(jù)插入數(shù)據(jù)庫的時候有亂碼。

serverName是我們web應(yīng)用的地址和端口

XML/HTML代碼

<context-param>
<param-name>serverName</param-name>
<param-value>192.168.1.145:81</param-value>
</context-param>
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>
org.springframework.web.filter.CharacterEncodingFilter
</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>*.htm</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>*.ftl</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>*.xhtml</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>*.html</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>*.shtml</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>*.jsp</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>*.do</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>*.vm</url-pattern>
</filter-mapping>
<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 Authentication Filter</filter-name>
<filter-class>
org.jasig.cas.client.authentication.AuthenticationFilter
</filter-class>
<init-param>
<param-name>casServerLoginUrl</param-name>
<param-value>http://192.168.1.100/cas/login</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://192.168.1.100/cas</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 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>

3.導(dǎo)入證書，如果不用https的話，這步可以跳過，把tomcatsso.crt證書拷貝到c盤下面，在jdk的bin目錄下面運行下面的語句。

JavaScript代碼

rem （注釋：清除系統(tǒng)中可能存在的名字為tomcatsso 的同名證書）
keytool -delete -alias tomcatsso -keystore "%JAVA_HOME%/jre/lib/security/cacerts" -storepass changeit
keytool -delete -alias tomcatsso -storepass changeit
rem 在客戶端的 JVM 里導(dǎo)入信任的 SERVER 的證書 ( 根據(jù)情況有可能需要管理員權(quán)限 )
keytool -import -alias tomcatsso -file "c:/tomcatsso.crt" -keystore "%java_home%/jre/lib/security/cacerts" -storepass changeit

客戶端獲取登錄用戶名和用戶信息實例

Java代碼

HttpServletRequest request = ServletActionContext.getRequest();
AttributePrincipal principal = (AttributePrincipal)request.getUserPrincipal();
String username = principal.getName();
Long orgnId = Long.parseLong(principal.getAttributes().get("orgnId").toString());

posted on 2009-10-20 18:21 流腥魚閱讀(20443) 評論(13) 編輯收藏所屬分類: java

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