（原创）LDAP与CAS单点登录集成

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编写CAS的配置文件deployerConfigContext-ldap.xml，这里配置了关于Ldap认证源的各种信息，代码如下：

xml version = "1.0" encoding = "UTF-8" ?>

DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd" >

< beans >

< bean id = "authenticationManager"   class = "org.jasig.cas.authentication.AuthenticationManagerImpl" >

    < property name = "credentialsToPrincipalResolvers" >

        < list >

            < bean

        class = "org.jasig.cas.authentication.principal.UsernamePasswordCredentialsToPrincipalResolver" />

            < bean

    class = "org.jasig.cas.authentication.principal.HttpBasedServiceCredentialsToPrincipalResolver" />

        list >

    property >

    < property name = "authenticationHandlers" >

        < list >

            < bean               class = "org.jasig.cas.authentication.handler.support.HttpBasedServiceCredentialsAuthenticationHandler" />

 

< bean               class = "org.jasig.cas.authentication.handler.support.HttpBasedServiceCredentialsAuthenticationHandler" />

            < bean       class = "org.jasig.cas.adaptors.ldap.BindLdapAuthenticationHandler" >

                < property name = "filter" value = "uid=%u" />

                

                < property name = "searchBase" value = "ou=People,ou=rootOrg,o=sevenSeas" />

                < property name = "contextSource" ref = "contextSource" />

            bean >

        list >

    property >

bean >

 

< bean id = "contextSource" class = "org.jasig.cas.adaptors.ldap.util.AuthenticatedLdapContextSource" >

        < property name = "password" value = "secret" />

        < property name = "pooled" value = "true" />

        < property name = "urls" >

            < list >

                < value > ldap://localhost:10389/ value >

            list >

        property >

        管理员 -->

        < property name = "userName" value = "uid=admin,ou=system" />

        < property name = "baseEnvironmentProperties" >

            < map >

                < entry >

                        < key >< value > java.naming.security.authentication value > key >

                     < value > simple value >

                 entry >

             map >

        property >

    bean >             

   

beans >

如果使用 ou=People,ou=rootOrg,o=sevenSeas 节点，如第7章的图所示，输出日志信息为：

[DEBUG] 2007-12-20 13:28:51,675 org.jasig.cas.web.flow.AuthenticationViaFormAction - Found existing form object with name 'credentials' of type [class org.jasig.cas.authentication.principal.UsernamePasswordCredentials] in scope Flow [DEBUG] 2007-12-20 13:28:51,675 org.jasig.cas.CentralAuthenticationServiceImpl - Attempting to create TicketGrantingTicket for admin username is [admin] password is [secret] [DEBUG] 2007-12-20 13:28:51,722 org.springframework.ldap.support.LdapContextSource - Principal: 'uid=admin,ou=system' [DEBUG] 2007-12-20 13:28:52,113 org.springframework.ldap.support.LdapContextSource - Got Ldap context on server 'ldap://localhost:10389/' cns is [[cn=admin]] cns.isEmpty() is [false] cns.size() is [1] !this.allowMultipleAccounts is [true]

这是日志信息显示只有一个cn=admin的用户，可以进行Ldap认证。

如果将节点改为o=sevenSeas的话，如图：

以sevenSeas为基节点

再次验证日志信息会出现如下显示：

[DEBUG] 2007-12-20 13:43:56,347 org.jasig.cas.web.flow.AuthenticationViaFormAction - Found existing form object with name 'credentials' of type [class org.jasig.cas.authentication.principal.UsernamePasswordCredentials] in scope Flow [DEBUG] 2007-12-20 13:43:56,347 org.jasig.cas.CentralAuthenticationServiceImpl - Attempting to create TicketGrantingTicket for admin username is [admin] password is [secret] [DEBUG] 2007-12-20 13:43:56,363 org.springframework.ldap.support.LdapContextSource - Principal: 'uid=admin,ou=system' [DEBUG] 2007-12-20 13:43:56,394 org.springframework.ldap.support.LdapContextSource - Got Ldap context on server 'ldap://localhost:10389/' cns is [[cn=admin,ou=Roles,ou=rootOrg, cn=admin,ou=People,ou=rootOrg]] cns.isEmpty() is [false] cns.size() is [2] !this.allowMultipleAccounts is [true]

这时我们看到people和role节点下面都有cn=admin，这时候 allowMultipleAccounts 的值为 true ，意味着当前有多歌同名帐号，系统不知道该选择哪个，所以会验证失败。这是需要注意的地方。v