在发布的时候老出问题：
严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanDefinitionStoreException: Invalid bean definition with name 'sessionFactory' defined in URL [jar:file:/E:/MallSoft/EzSite/web/spring/target/epim-ezsite-web-spring-1.0-SNAPSHOT/WEB-INF/lib/epim-ezsite-data-hibernate-1.0-20080720.182227-1.jar!/META-INF/spring/Spring-hibernate.xml]: Circular placeholder reference 'hibernate.show_sql' in property definitions
at org.springframework.beans.factory.config.PropertyPlaceholderConfigurer.processProperties(PropertyPlaceholderConfigurer.java:268)
at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:75)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:554)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:528)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:363)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3843)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4350)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
以下是错误涉及到的源代码，请各位高手分析一下：
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="annotatedClasses">
<list>
<value>com.epim.platform.model.License</value>
<value>com.epim.platform.model.Country</value>
<value>com.epim.platform.model.Province</value>
<value>com.epim.platform.model.City</value>
<value>com.epim.platform.model.County</value>
<value>com.epim.platform.model.Organise</value>
<value>com.epim.platform.model.Job</value>
<value>com.epim.platform.model.Personnel</value>
<value>com.epim.security.model.User</value>
<value>com.epim.security.model.Group</value>
<value>com.epim.security.model.Role</value>
<value>com.epim.security.model.Resource</value>
<value>com.epim.cms.model.Document</value>
<value>com.epim.cms.model.Channel</value>
<value>com.epim.cms.model.Special</value>