求助一个问题，要详解谢谢啦！！

我用NetBeans IDE 6.7.1 Deploy的时候会发生以下端口被占用的异常，该如何解决那？？？？
java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.CommunicationException [Root exception is java.rmi.ConnectIOException: non-JRMP server at remote endpoint]
        at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:317)
        at javax.management.remote.JMXConnectorFactory.connect(JMXConnectorFactory.java:248)
        at ei.jp.gecapital.util.MonitorActionServlet.connect(MonitorActionServlet.java:105)
        at ei.jp.gecapital.util.MonitorActionServlet.initOther(MonitorActionServlet.java:52)
        at org.apache.struts.action.ActionServlet.init(ActionServlet.java:348)
        at javax.servlet.GenericServlet.init(GenericServlet.java:270)
        at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1100)
        at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1023)
        at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4969)
        at org.apache.catalina.core.StandardContext.start(StandardContext.java:5376)
        at com.sun.enterprise.web.WebModule.start(WebModule.java:345)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:986)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:970)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:704)
        at com.sun.enterprise.web.WebContainer.loadWebModule(WebContainer.java:1649)
        at com.sun.enterprise.web.WebContainer.loadWebModule(WebContainer.java:1254)
        at com.sun.enterprise.server.WebModuleDeployEventListener.moduleDeployed(WebModuleDeployEventListener.java:182)
        at com.sun.enterprise.server.WebModuleDeployEventListener.moduleDeployed(WebModuleDeployEventListener.java:278)
        at com.sun.enterprise.admin.event.AdminEventMulticaster.invokeModuleDeployEventListener(AdminEventMulticaster.java:1005)
        at com.sun.enterprise.admin.event.AdminEventMulticaster.handleModuleDeployEvent(AdminEventMulticaster.java:992)
        at com.sun.enterprise.admin.event.AdminEventMulticaster.processEvent(AdminEventMulticaster.java:470)
        at com.sun.enterprise.admin.event.AdminEventMulticaster.multicastEvent(AdminEventMulticaster.java:182)
        at com.sun.enterprise.admin.server.core.DeploymentNotificationHelper.multicastEvent(DeploymentNotificationHelper.java:308)
        at com.sun.enterprise.deployment.phasing.DeploymentServiceUtils.multicastEvent(DeploymentServiceUtils.java:231)
        at com.sun.enterprise.deployment.phasing.ServerDeploymentTarget.sendStartEvent(ServerDeploymentTarget.java:298)
        at com.sun.enterprise.deployment.phasing.ApplicationStartPhase.runPhase(ApplicationStartPhase.java:132)
        at com.sun.enterprise.deployment.phasing.DeploymentPhase.executePhase(DeploymentPhase.java:108)
        at com.sun.enterprise.deployment.phasing.PEDeploymentService.executePhases(PEDeploymentService.java:966)
        at com.sun.enterprise.deployment.phasing.PEDeploymentService.start(PEDeploymentService.java:609)
        at com.sun.enterprise.deployment.phasing.PEDeploymentService.start(PEDeploymentService.java:653)
        at com.sun.enterprise.admin.mbeans.ApplicationsConfigMBean.start(ApplicationsConfigMBean.java:773)
        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 com.sun.enterprise.admin.MBeanHelper.invokeOperationInBean(MBeanHelper.java:390)
        at com.sun.enterprise.admin.MBeanHelper.invokeOperationInBean(MBeanHelper.java:373)
        at com.sun.enterprise.admin.config.BaseConfigMBean.invoke(BaseConfigMBean.java:477)
        at com.sun.jmx.mbeanserver.DynamicMetaDataImpl.invoke(DynamicMetaDataImpl.java:213)
        at com.sun.jmx.mbeanserver.MetaDataImpl.invoke(MetaDataImpl.java:220)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:815)
        at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:784)
        at sun.reflect.GeneratedMethodAccessor14.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at com.sun.enterprise.admin.util.proxy.ProxyClass.invoke(ProxyClass.java:90)
        at $Proxy1.invoke(Unknown Source)
        at com.sun.enterprise.admin.server.core.jmx.SunoneInterceptor.invoke(SunoneInterceptor.java:304)
        at com.sun.enterprise.interceptor.DynamicInterceptor.invoke(DynamicInterceptor.java:170)
        at com.sun.enterprise.admin.jmx.remote.server.callers.InvokeCaller.call(InvokeCaller.java:69)
        at com.sun.enterprise.admin.jmx.remote.server.MBeanServerRequestHandler.handle(MBeanServerRequestHandler.java:155)
        at com.sun.enterprise.admin.jmx.remote.server.servlet.RemoteJmxConnectorServlet.processRequest(RemoteJmxConnectorServlet.java:122)
        at com.sun.enterprise.admin.jmx.remote.server.servlet.RemoteJmxConnectorServlet.doPost(RemoteJmxConnectorServlet.java:193)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:754)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
        at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:427)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:315)
        at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:287)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:218)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
        at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:94)
        at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:98)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:222)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1093)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:166)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1093)
        at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:291)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:666)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:597)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:872)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:341)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:263)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:214)
        at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:264)
        at com.sun.enterprise.web.connector.grizzly.WorkerThreadImpl.run(WorkerThreadImpl.java:117)
Caused by: javax.naming.CommunicationException [Root exception is java.rmi.ConnectIOException: non-JRMP server at remote endpoint]
        at com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java:97)
        at com.sun.jndi.toolkit.url.GenericURLContext.lookup(GenericURLContext.java:185)
        at javax.naming.InitialContext.lookup(InitialContext.java:351)
        at javax.management.remote.rmi.RMIConnector.findRMIServerJNDI(RMIConnector.java:1817)
        at javax.management.remote.rmi.RMIConnector.findRMIServer(RMIConnector.java:1787)
        at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:259)
        ... 81 more
Caused by: java.rmi.ConnectIOException: non-JRMP server at remote endpoint
        at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:217)
        at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:171)
        at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:306)
        at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
        at com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java:93)
        ... 86 more