无法使Spring3会话并发控制工作

使用SpringSecurity3.1.0,我似乎无法使并发会话控制功能正常工作。当我同时使用IE和火狐(使用本地工作站)登录系统时,我在会话注册表中看到了两次我的用户原则。我希望并发会话控件将我注销或引发异常,或者执行一些指示我已多次登录到该站点的操作,但这是不允许的。

就其价值而言,即使指定我的站点使用自定义登录表单,我也无法使用HTTP命名空间元素的自动配置让并发控制完全正常工作。我想知道这是否是因为我的身份验证是通过LDAP提供的…?

这是我的安全配置。

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/security"
 xmlns:beans="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
           http://www.springframework.org/schema/security
           http://www.springframework.org/schema/security/spring-security-3.0.xsd">

 <http auto-config="false" use-expressions="true" entry-point-ref="authenticationProcessingFilterEntryPoint">
     <custom-filter position="CONCURRENT_SESSION_FILTER" ref="concurrencyFilter" />
     <custom-filter position="FORM_LOGIN_FILTER" ref="myAuthFilter"/>
     <session-management session-authentication-strategy-ref="sas"/>
  <intercept-url pattern="/" access="permitAll" />
  <intercept-url pattern="/css/**" access="permitAll" />
  <intercept-url pattern="/images/**" access="permitAll" />
  <intercept-url pattern="/js/**" access="permitAll" />
  <intercept-url pattern="/public/**" access="permitAll" />
  <intercept-url pattern="/home/**" access="permitAll" />
  <intercept-url pattern="/admin/user/**" access="hasRole('AUTH_MANAGE_USERS')" />
  <intercept-url pattern="/admin/group/**" access="hasRole('AUTH_MANAGE_USERS')" />
  <intercept-url pattern="/**" access="isAuthenticated()" />
  <access-denied-handler error-page="/403.html"/>
  <logout invalidate-session="true" logout-success-url="/public/home.do"/>
 </http>

    <beans:bean id="authenticationProcessingFilterEntryPoint"
          class="org.springframework.security.web.authentication.LoginUrlAuthenticationEntryPoint">
        <beans:property name="loginFormUrl" value="/public/login.do"/>
        <beans:property name="forceHttps" value="false"/>
    </beans:bean>

  <beans:bean id="concurrencyFilter"
       class="org.springframework.security.web.session.ConcurrentSessionFilter">
     <beans:property name="sessionRegistry" ref="sessionRegistry" />
     <beans:property name="expiredUrl" value="/expired.html" />
   </beans:bean>

   <beans:bean id="myAuthFilter" class="org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter">
     <beans:property name="sessionAuthenticationStrategy" ref="sas" />
     <beans:property name="authenticationManager" ref="authenticationManager" />
   </beans:bean>

   <beans:bean id="sas" class="org.springframework.security.web.authentication.session.ConcurrentSessionControlStrategy">
     <beans:constructor-arg name="sessionRegistry" ref="sessionRegistry" />
     <beans:property name="maximumSessions" value="1" />
     <beans:property name="exceptionIfMaximumExceeded" value="true"/>
   </beans:bean>

 <authentication-manager alias="authenticationManager">
  <authentication-provider ref='ldapProvider' />
  <authentication-provider ref="externalUserLdapProvider"/>
 </authentication-manager>

 <beans:bean id="sessionRegistry" class="org.springframework.security.core.session.SessionRegistryImpl" />

 <beans:bean id="securityContext" 
  class="org.springframework.security.core.context.SecurityContextHolder" factory-method="getContext"/>

 <beans:bean id="ldapProvider"
  class="org.springframework.security.ldap.authentication.LdapAuthenticationProvider">
  <beans:constructor-arg ref="bindAuthenticator" />
  <beans:constructor-arg ref="userService" />
  <beans:property name="userDetailsContextMapper" ref="permissionedUserContextMapper" />
 </beans:bean>

 <beans:bean id="permissionedUserContextMapper"
  class="...service.impl.PermissionedUserContextMapperImpl" >
  <beans:property name="userDao" ref="userDao"/>
 </beans:bean>  

 <!-- LDAP via AD-->
 <beans:bean id="bindAuthenticator"
  class="org.springframework.security.ldap.authentication.BindAuthenticator">
  <beans:constructor-arg ref="contextSource" />
  <beans:property name="userSearch" ref="userSearch" />
 </beans:bean>

 <beans:bean id="userSearch"
  class="org.springframework.security.ldap.search.FilterBasedLdapUserSearch">
  <beans:constructor-arg>
   <beans:value></beans:value>
  </beans:constructor-arg>
  <beans:constructor-arg>
   <beans:value>(sAMAccountName={0})</beans:value>
  </beans:constructor-arg>
  <beans:constructor-arg ref="contextSource" />
  <beans:property name="searchSubtree">
   <beans:value>true</beans:value>
  </beans:property>
 </beans:bean>

 <beans:bean id="contextSource"
  class="org.springframework.security.ldap.DefaultSpringSecurityContextSource">
  <beans:constructor-arg
   value="ldap://omitted" />
  <beans:property name="userDn"
   value="ommitted" />
  <beans:property name="password" value="omitted" />
 </beans:bean>

 <!--  Second LDAP Authenticator (Apache DS) -->
    <beans:bean id="externalUserLdapProvider" class="org.springframework.security.ldap.authentication.LdapAuthenticationProvider">
        <beans:constructor-arg ref="externalUserBindAuthenticator"/>
  <beans:constructor-arg ref="userService" />
  <beans:property name="userDetailsContextMapper" ref="permissionedUserContextMapper" />
    </beans:bean>

 <beans:bean id="externalUserBindAuthenticator" class="org.springframework.security.ldap.authentication.BindAuthenticator">
  <beans:constructor-arg ref="externalUserContextSource" />
  <beans:property name="userDnPatterns">
   <beans:list>
    <beans:value>cn={0},ou=Users</beans:value>
   </beans:list>
  </beans:property>
 </beans:bean>

 <beans:bean id="externalUserContextSource" 
   class="org.springframework.security.ldap.DefaultSpringSecurityContextSource">
     <beans:constructor-arg value="ldap://omitted"/>
 </beans:bean>

</beans:beans>

如果用户登录超过1个会话,我是否缺少一些应该将并发控制策略告知BARF的属性?我知道同一个用户记录了不止一个会话——正如我在会话注册表中看到的一样。

任何/所有回复都非常感谢!事先谢谢!