Acegi concurrent session

.
<bean id="concurrentSessionController" class="org.acegisecurity.concurrent.ConcurrentSessionControllerImpl"> <bean id="concurrentSessionController" class="org.acegisecurity.concurrent.ConcurrentSessionControllerImpl">
<!-- 設成-1 不會限制, 不可以是0, 大於0則是依據數字提供session --> <!--设成-1不会限制,不可以是0,大于0则是依据数字提供session -->
<property name="maximumSessions"><value>1</value></property> <property name="maximumSessions"><value>1</value></property>
<property name="sessionRegistry"><ref local="sessionRegistry"/></property> <property name="sessionRegistry"><ref local="sessionRegistry"/></property>
</bean>
<bean id="concurrentSessionFilter" class="org.acegisecurity.concurrent.ConcurrentSessionFilter"> <bean id="concurrentSessionFilter" class="org.acegisecurity.concurrent.ConcurrentSessionFilter">
<property name="expiredUrl" value="/login.jsp"/> <property name="expiredUrl" value="/login.jsp"/>
<property name="sessionRegistry" ref="sessionRegistry"/> <property name="sessionRegistry" ref="sessionRegistry"/>
</bean>
<bean id="sessionRegistry" class="org.acegisecurity.concurrent.SessionRegistryImpl"/> <bean id="sessionRegistry" class="org.acegisecurity.concurrent.SessionRegistryImpl"/>

2.
在filterChainProxy 裡面加上concurrentSessionFilter 在filterChainProxy里面加上concurrentSessionFilter