我遵循本教程关于“Web服务中的JPA”（http://www.netbeans.org/kb/61/javaee/persistence.html）。
我一步一步地学习本教程，当我编译代码时，我没有问题。但是当我运行该程序时，我遇到了很多错误
我已经下载了完成项目，但它仍然是同样的错误，有任何方法可以处理这个错误吗？
THX
CORE5061: Exception :
java.lang.NullPointerException
at com.sun.enterprise.util.InvocationManagerImpl.preInvoke(InvocationManagerImpl.java:136)
at com.sun.appserv.server.ServerLifecycleModule.preInvoke(ServerLifecycleModule.java:178)
at com.sun.appserv.server.ServerLifecycleModule.postEvent(ServerLifecycleModule.java:219)
at com.sun.appserv.server.ServerLifecycleModule.onTermination(ServerLifecycleModule.java:277)
at com.sun.appserv.server.LifecycleModuleService.onTermination(LifecycleModuleService.java:496)
at com.sun.enterprise.server.ApplicationServer.onTermination(ApplicationServer.java:591)
at com.sun.enterprise.server.PEMain.run(PEMain.java:432)
at com.sun.enterprise.server.PEMain.main(PEMain.java:336)
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 com.sun.enterprise.server.PELaunch.main(PELaunch.java:415)
java.lang.RuntimeException: EMBEDDED Broker start failure:code = 1
at com.sun.messaging.jms.ra.EmbeddedBrokerRunner.start(EmbeddedBrokerRunner.java:268)
at com.sun.messaging.jms.ra.ResourceAdapter.start(ResourceAdapter.java:472)
at com.sun.enterprise.connectors.ActiveInboundResourceAdapter$1.run(ActiveInboundResourceAdapter.java:178)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.enterprise.connectors.ActiveInboundResourceAdapter.startResourceAdapter(ActiveInboundResourceAdapter.java:174)
at com.sun.enterprise.connectors.ActiveInboundResourceAdapter.<init>(ActiveInboundResourceAdapter.java:132)
at com.sun.enterprise.connectors.system.ActiveJmsResourceAdapter.<init>(ActiveJmsResourceAdapter.java:234)
at com.sun.enterprise.connectors.ActiveRAFactory.createActiveResourceAdapter(ActiveRAFactory.java:107)
at com.sun.enterprise.connectors.ResourceAdapterAdminServiceImpl.createActiveResourceAdapter(ResourceAdapterAdminServiceImpl.java:300)
at com.sun.enterprise.connectors.ResourceAdapterAdminServiceImpl.createActiveResourceAdapter(ResourceAdapterAdminServiceImpl.java:445)
at com.sun.enterprise.connectors.ConnectorRuntime.createActiveResourceAdapter(ConnectorRuntime.java:230)
at com.sun.enterprise.jms.JmsProviderLifecycle.onStartup(JmsProviderLifecycle.java:428)
at com.sun.enterprise.server.ApplicationServer.onStartup(ApplicationServer.java:446)
at com.sun.enterprise.server.ondemand.OnDemandServer.onStartup(OnDemandServer.java:134)
at com.sun.enterprise.server.PEMain.run(PEMain.java:409)
at com.sun.enterprise.server.PEMain.main(PEMain.java:336)
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 com.sun.enterprise.server.PELaunch.main(PELaunch.java:415)
RAR6035 : Resource adapter start failed : {0}
javax.resource.spi.ResourceAdapterInternalException: MQJMSRA_RA4001: start:Aborting:Exception starting EMBEDDED broker=EMBEDDED Broker start failure:code = 1
at com.sun.messaging.jms.ra.ResourceAdapter.start(ResourceAdapter.java:476)
at com.sun.enterprise.connectors.ActiveInboundResourceAdapter$1.run(ActiveInboundResourceAdapter.java:178)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.enterprise.connectors.ActiveInboundResourceAdapter.startResourceAdapter(ActiveInboundResourceAdapter.java:174)
at com.sun.enterprise.connectors.ActiveInboundResourceAdapter.<init>(ActiveInboundResourceAdapter.java:132)
at com.sun.enterprise.connectors.system.ActiveJmsResourceAdapter.<init>(ActiveJmsResourceAdapter.java:234)
at com.sun.enterprise.connectors.ActiveRAFactory.createActiveResourceAdapter(ActiveRAFactory.java:107)
at com.sun.enterprise.connectors.ResourceAdapterAdminServiceImpl.createActiveResourceAdapter(ResourceAdapterAdminServiceImpl.java:300)
at com.sun.enterprise.connectors.ResourceAdapterAdminServiceImpl.createActiveResourceAdapter(ResourceAdapterAdminServiceImpl.java:445)
at com.sun.enterprise.connectors.ConnectorRuntime.createActiveResourceAdapter(ConnectorRuntime.java:230)
at com.sun.enterprise.jms.JmsProviderLifecycle.onStartup(JmsProviderLifecycle.java:428)
at com.sun.enterprise.server.ApplicationServer.onStartup(ApplicationServer.java:446)
at com.sun.enterprise.server.ondemand.OnDemandServer.onStartup(OnDemandServer.java:134)
at com.sun.enterprise.server.PEMain.run(PEMain.java:409)
at com.sun.enterprise.server.PEMain.main(PEMain.java:336)
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 com.sun.enterprise.server.PELaunch.main(PELaunch.java:415)
Caused by: java.lang.RuntimeException: EMBEDDED Broker start failure:code = 1
at com.sun.messaging.jms.ra.EmbeddedBrokerRunner.start(EmbeddedBrokerRunner.java:268)
at com.sun.messaging.jms.ra.ResourceAdapter.start(ResourceAdapter.java:472)
... 19 more