acegi拦截方法怎么配置

请问acegi方法拦截怎么配置啊？

[code="java"]
<?xml version="1.0" encoding="UTF-8"?>
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd">

<!-- ========================= Filter Chain ============================ -->
<bean id="filterChainProxy" class="org.acegisecurity.util.FilterChainProxy">
    <property name="filterInvocationDefinitionSource">
        <value>
            CONVERT_URL_TO_LOWERCASE_BEFORE_COMPARISON
            PATTERN_TYPE_APACHE_ANT
            /**=httpSessionContextIntegrationFilter,logoutFilter,authenticationProcessingFilter,securityContextHolderAwareRequestFilter,anonymousProcessingFilter,exceptionTranslationFilter,filterInvocationInterceptor
        </value>
    </property>
</bean>

<!-- Access authentication object -->
<bean id="httpSessionContextIntegrationFilter"
    class="org.acegisecurity.context.HttpSessionContextIntegrationFilter" />

<!-- Clear after logout -->
<bean id="logoutFilter"
    class="org.acegisecurity.ui.logout.LogoutFilter">
    <constructor-arg value="/logoutSuccess.jsp" />  <!-- logout success to redirecte to -->
    <constructor-arg>
        <list>
            <bean class="org.acegisecurity.ui.logout.SecurityContextLogoutHandler" />
        </list>
    </constructor-arg>
</bean>

<!-- Process authentication request -->
<bean id="authenticationProcessingFilter"
    class="org.acegisecurity.ui.webapp.AuthenticationProcessingFilter">
    <property name="authenticationManager" ref="authenticationManager" />
    <property name="authenticationFailureUrl" value="/login.jsp?login_error=1" /> <!-- login failure to redirected to -->
    <property name="defaultTargetUrl" value="/protected/protected1.jsp" /> <!-- login success to redirecte to -->
    <property name="filterProcessesUrl" value="/j_security_check" /> <!-- login request action -->
</bean>

<!-- Decorate HttpServletRequest which container request parameters,header,Date,cookies etc. -->
<bean id="securityContextHolderAwareRequestFilter"
    class="org.acegisecurity.wrapper.SecurityContextHolderAwareRequestFilter" />

<!-- Configure anonymous user and authentication -->
<bean id="anonymousProcessingFilter"
    class="org.acegisecurity.providers.anonymous.AnonymousProcessingFilter">
    <property name="key" value="anonymous" />
    <property name="userAttribute" value="anonymous,ROLE_ANONYMOUS" />
</bean>

<!-- Configure the map relation of exception & URL -->
<bean id="exceptionTranslationFilter"
    class="org.acegisecurity.ui.ExceptionTranslationFilter">
    <property name="authenticationEntryPoint">
        <bean
            class="org.acegisecurity.ui.webapp.AuthenticationProcessingFilterEntryPoint">
            <property name="loginFormUrl" value="/login.jsp" />
        </bean>
    </property>
    <property name="accessDeniedHandler">
        <bean
            class="org.acegisecurity.ui.AccessDeniedHandlerImpl">
            <property name="errorPage" value="/accessDenied.jsp" />
        </bean>
    </property>
</bean>

<!-- Configure the map relation of the URL & Role -->
<bean id="filterInvocationInterceptor"
    class="org.acegisecurity.intercept.web.FilterSecurityInterceptor">
    <property name="authenticationManager" ref="authenticationManager" />
    <property name="accessDecisionManager" ref="accessDecisionManager" />
    <property name="objectDefinitionSource">
        <value>
            CONVERT_URL_TO_LOWERCASE_BEFORE_COMPARISON
            PATTERN_TYPE_APACHE_ANT 
            /protected/**=ROLE_HEAD_OF_ENGINEERING
            /**=IS_AUTHENTICATED_ANONYMOUSLY
        </value>
    </property>
</bean>

<!-- Authentication manager -->
<bean id="authenticationManager"
    class="org.acegisecurity.providers.ProviderManager">
    <property name="providers">
        <list>
            <ref local="daoAuthenticationProvider" />
        </list>
    </property>
</bean>

<!-- Access decision vote manager -->
<bean id="accessDecisionManager" class="org.acegisecurity.vote.AffirmativeBased">
    <property name="allowIfAllAbstainDecisions"
            value="false" />
        <property name="decisionVoters">
            <list>
                <bean class="org.acegisecurity.vote.RoleVoter" />
                <bean class="org.acegisecurity.vote.AuthenticatedVoter" />
            </list>
        </property>
</bean>

<!-- DAO authentication provider which get the user's information from database -->
<bean id="daoAuthenticationProvider"
    class="org.acegisecurity.providers.dao.DaoAuthenticationProvider">
    <property name="userDetailsService" ref="userDetailsService" />
    <!--property name="userDetailsService" ref="tuserDao" /-->
    <!-- UserCache property will activate the cache, it is not 
    mandatory but increases performance by cacheing the user 
    details retrieved from user-base -->
    <property name="userCache" ref="userCache"/>
</bean>

<!-- Access user's username and password -->
<bean id="userDetailsService" class="org.acegisecurity.userdetails.memory.InMemoryDaoImpl">
    <property name="userProperties">
        <bean class="org.springframework.beans.factory.config.PropertiesFactoryBean">
            <property name="location" value="/WEB-INF/users.properties" />
        </bean>
    </property>
</bean>

<!-- Cache user's information -->
<bean id="userCache" class="org.acegisecurity.providers.dao.cache.EhCacheBasedUserCache">
            <property name="cache">
                <bean
                    class="org.springframework.cache.ehcache.EhCacheFactoryBean">
                    <property name="cacheManager">
                        <bean
                            class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean" />
                    </property>
                    <property name="cacheName" value="userCache" />
                </bean>
            </property>
</bean>

<!-- This bean is optional; it isn't used by any other bean as it only listens and logs -->
<bean id="loggerListener" class="org.acegisecurity.event.authentication.LoggerListener" />

[/code]
其中，users.properties中的内容为
[code="java"]
alice=123,ROLE_HEAD_OF_ENGINEERING
[/code]

如果用数据库中的用户登陆可以选择
[code="java"]

[/code]
已经给配置好了，你可以根据自己的要求修改。