Jetty用spring bean格式配置hotdeploy不生效

【问题】jetty独立启动使用原生的xml格式，hotdeploy是ok的，
但是embedded到mq中，采用spring bean格式，配置报错，但配置应该是正确的。

spring bean配置段如下：放置在server bean配置属性中。
/////////begin///////
<!-- hotdeploy =begin= -->
<property name="bean">
<list>
<bean id="deploymentManager" class="org.eclipse.jetty.deploy.DeploymentManager">
<property name="contexts" ref="contexts"/>
<property name="appProviders">
<list>
<bean id="webAppProvider" class="org.eclipse.jetty.deploy.providers.WebAppProvider">
<property name="monitoredDirName" value="webapps"/>
<property name="scanInterval" value="1"/>
<property name="extractWars" value="true"/>
</bean>
</list>
</property>
</bean>
</list>
</property>
<!-- hotdeploy =end= -->
/////////end/////////

生效的hotdeploy
///////////begin////////
# grep Deploy ./jmap_01.txt
436: 5 160 org.eclipse.jetty.deploy.DeploymentManager$AppEntry
441: 2 160 org.eclipse.jetty.deploy.DeploymentManager
743: 2 32 org.eclipse.jetty.deploy.bindings.StandardDeployer
# grep Webapp ./jmap_01.txt
# grep WebApp ./jmap_01.txt
201: 4 1152 org.eclipse.jetty.webapp.WebAppContext
325: 4 384 org.eclipse.jetty.webapp.WebAppClassLoader
410: 2 192 org.eclipse.jetty.deploy.providers.WebAppProvider
529: 4 96 org.eclipse.jetty.webapp.WebAppContext$Context
763: 2 32 org.eclipse.jetty.deploy.providers.WebAppProvider$Filter
//////////end///////////

不起作用的hotdeploy
///////////begin///////////
# grep WebApp ./jmap_local_01.txt
506: 3 864 org.eclipse.jetty.webapp.WebAppContext
779: 3 288 org.eclipse.jetty.webapp.WebAppClassLoader
807: 2 256 org.springframework.web.context.support.XmlWebApplicationContext
1214: 1 96 org.eclipse.jetty.deploy.providers.WebAppProvider
1267: 3 72 org.eclipse.jetty.webapp.WebAppContext$Context
1649: 2 32 org.springframework.web.context.support.WebApplicationContextUtils$WebRequestObjectFactory
1666: 2 32 org.springframework.web.context.support.WebApplicationContextUtils$RequestObjectFactory
1705: 2 32 org.springframework.web.context.support.WebApplicationContextUtils$SessionObjectFactory
2062: 1 16 org.eclipse.jetty.deploy.providers.WebAppProvider$Filter
# grep Deploy ./jmap_local_01.txt
1246: 1 80 org.eclipse.jetty.deploy.DeploymentManager
///////////end/////////////
【分析】
1、从内存对象看，StandardDeployer类没有被加载到==>？？？
2、使用AMQ原有的配置文件，进行同样的配置，hotdeploy提示同样的配置错误，
不支持<property name="beans">吗？
3、http://wiki.eclipse.org/Jetty/Feature/Deployment_Manager
jetty原生的deployManager配置有两种：
3.1>>>
///////////begin////////
<Configure id="Server" class="org.eclipse.jetty.server.Server">
<Ref id="DeploymentManager">
<Call name="addAppProvider">
<Arg>
<New class="org.eclipse.jetty.deploy.providers.ContextProvider">
<Set name="monitoredDirName"><Property name="jetty.home" default="." />/contexts</Set>
<Set name="scanInterval">1</Set>
</New>
</Arg>
</Call>
</Ref>
</Configure>
////////////end///////////
3.2>>>
////////////begin/////////
<Configure id="Server" class="org.eclipse.jetty.server.Server">

<Call name="addBean">
<Arg>
<New id="DeploymentManager" class="org.eclipse.jetty.deploy.DeploymentManager">
<Set name="contexts">
<Ref id="Contexts" />
</Set>
<Call name="setContextAttribute">
<Arg>org.eclipse.jetty.server.webapp.ContainerIncludeJarPattern</Arg>
<Arg>.*/.*jsp-api-[^/]*\.jar$|.*/.*jsp-[^/]*\.jar$|.*/.*taglibs[^/]*\.jar$</Arg>
</Call>

</New>
</Arg>
</Call>
</Configure>
////////////end////////////
4、Server类内部属性有：
4.1、Connector[] _connectors
4.2、ThreadPool _threadPool
4.3、String __version
4.4、AttributesMap _attributes
4.5、Container _container
4.6、SessionIdManager _sessionIdManager
4.7、boolean _sendServerVersion
4.8、boolean _sendDateHeader
4.9、boolean _stopAtShutdown
4.10、Handler _handler
4.11、Server _server
其中没有DeploymentManager或者bean的get方法。