dwr的这种问题怎么解决啊！急！

public class UserModel extends Model {
	private String userId;// 编号

	private String userName;// 登录名称

	private String userPassword;// 密码 被加密

	private UserPowerTeamModel userPowerTeamId;
}

小弟用DWR加Hibernate时出问这样的问题！用DWR调用一个方法反回一个List对象时

如果里面有另一个对象如上图UserModel 中有一个‘private UserPowerTeamModel userPowerTeamId;’这个对象的时候如果userPowerTeamId有值dwr报错如果userPowerTeamId为null就是好的，不知道这个问题大家是怎么解决的！晕了急死，项目作到一半卡住了！！！

2006-12-28 22:26:02,796 [org.hibernate.LazyInitializationException]-[ERROR] could not initialize proxy - the owning Session was closed
org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed
	at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:56)
	at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:98)
	at org.hibernate.proxy.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:158)
	at com.clan.model.user.UserPowerTeamModel$$EnhancerByCGLIB$$d6c877f1.getUserPowerTeamName(<generated>)
	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:585)
	at org.directwebremoting.impl.PropertyDescriptorProperty.getValue(PropertyDescriptorProperty.java:62)
	at org.directwebremoting.convert.BasicObjectConverter.convertOutbound(BasicObjectConverter.java:188)
	at org.directwebremoting.dwrp.DefaultConverterManager.convertOutbound(DefaultConverterManager.java:192)
	at org.directwebremoting.convert.BasicObjectConverter.convertOutbound(BasicObjectConverter.java:189)
	at org.directwebremoting.dwrp.DefaultConverterManager.convertOutbound(DefaultConverterManager.java:192)
	at org.directwebremoting.convert.CollectionConverter.convertOutbound(CollectionConverter.java:206)
	at org.directwebremoting.dwrp.DefaultConverterManager.convertOutbound(DefaultConverterManager.java:192)
	at org.directwebremoting.extend.ScriptBufferUtil.createOutput(ScriptBufferUtil.java:56)
	at org.directwebremoting.dwrp.BaseCallMarshaller$CallScriptConduit.addScript(BaseCallMarshaller.java:501)
	at org.directwebremoting.extend.EnginePrivate.remoteHandleCallback(EnginePrivate.java:56)
	at org.directwebremoting.dwrp.BaseCallMarshaller.marshallOutbound(BaseCallMarshaller.java:328)
	at org.directwebremoting.servlet.PlainCallHandler.handle(PlainCallHandler.java:53)
	at org.directwebremoting.servlet.UrlProcessor.handle(UrlProcessor.java:101)
	at org.directwebremoting.servlet.DwrServlet.doPost(DwrServlet.java:120)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
	at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
	at java.lang.Thread.run(Thread.java:595)
2006-12-28 22:26:02,796 [org.directwebremoting.convert.CollectionConverter]-[WARN] Failed to convert array member 1. Conversion error for type: java.util.ArrayList
org.directwebremoting.extend.MarshallException: Error marshalling com.clan.model.user.UserPowerTeamModel$$EnhancerByCGLIB$$d6c877f1: could not initialize proxy - the owning Session was closed. See the logs for more details.
	at org.directwebremoting.impl.PropertyDescriptorProperty.getValue(PropertyDescriptorProperty.java:66)
	at org.directwebremoting.convert.BasicObjectConverter.convertOutbound(BasicObjectConverter.java:188)
	at org.directwebremoting.dwrp.DefaultConverterManager.convertOutbound(DefaultConverterManager.java:192)
	at org.directwebremoting.convert.BasicObjectConverter.convertOutbound(BasicObjectConverter.java:189)
	at org.directwebremoting.dwrp.DefaultConverterManager.convertOutbound(DefaultConverterManager.java:192)
	at org.directwebremoting.convert.CollectionConverter.convertOutbound(CollectionConverter.java:206)
	at org.directwebremoting.dwrp.DefaultConverterManager.convertOutbound(DefaultConverterManager.java:192)
	at org.directwebremoting.extend.ScriptBufferUtil.createOutput(ScriptBufferUtil.java:56)
	at org.directwebremoting.dwrp.BaseCallMarshaller$CallScriptConduit.addScript(BaseCallMarshaller.java:501)
	at org.directwebremoting.extend.EnginePrivate.remoteHandleCallback(EnginePrivate.java:56)
	at org.directwebremoting.dwrp.BaseCallMarshaller.marshallOutbound(BaseCallMarshaller.java:328)
	at org.directwebremoting.servlet.PlainCallHandler.handle(PlainCallHandler.java:53)
	at org.directwebremoting.servlet.UrlProcessor.handle(UrlProcessor.java:101)
	at org.directwebremoting.servlet.DwrServlet.doPost(DwrServlet.java:120)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
	at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
	at java.lang.Thread.run(Thread.java:595)
Caused by: org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed
	at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:56)
	at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:98)
	at org.hibernate.proxy.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:158)
	at com.clan.model.user.UserPowerTeamModel$$EnhancerByCGLIB$$d6c877f1.getUserPowerTeamName(<generated>)
	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:585)
	at org.directwebremoting.impl.PropertyDescriptorProperty.getValue(PropertyDescriptorProperty.java:62)
	... 29 more

open session in view

有人碰到过同样的问题吗？我用的dwr2.0

我发到DWR里的帖子怎么跑到入门来了！

在映射文件里设置 lazy=fasle,，默认为true的

主要问题是open session in view的问题，用dwr请求返回的时候并没有session打开在表现层（因为打开session的filter并没有被调用，这是使用xmlhttprequest导致的），所以要不你就用设置fetchmode来一次性把需要的UserPowerTeamModel拿出来，要不就把lazy设置成false（但是不推荐这样做，因为改hbm配置文件会影响全局），还有就是写hsql，用left join fetch来得到UserPowerTeamModel

问题解决了，但感觉这样作不太好！