channel配置時一個小問題

　　【問題描述】

　　如果在message-config.xml中加入這樣的配置 my-polling-amf 就會出下面的錯 2011-6-22 11:05:57 org.apache.catalina.core.StandardEngine start 資訊: Starting Servlet Engine: Apache Tomcat/6.0.14 **** MessageBrokerServlet failed to initialize due to runtime exception: Exception: flex.messaging.config.ConfigurationException: Unexpected text 'my-polling-amf' found in 'channels' from file: messaging-config.xml. at flex.messaging.config.AbstractConfigurationParser. allowedChildElements(AbstractConfigurationParser.ja va:283) at flex.messaging.config.ServerConfigurationParser.de stinationChannels(ServerConfigurationParser.java:89 7) at flex.messaging.config.ServerConfigurationParser.de stination(ServerConfigurationParser.java:856) at flex.messaging.config.ServerConfigurationParser.se rvice(ServerConfigurationParser.java:628) at flex.messaging.config.ServerConfigurationParser.se rviceInclude(ServerConfigurationParser.java:495) at flex.messaging.config.ServerConfigurationParser.se rvices(ServerConfigurationParser.java:468) at flex.messaging.config.ServerConfigurationParser.pa rseTopLevelConfig(ServerConfigurationParser.java:63 ) at flex.messaging.config.AbstractConfigurationParser. parse(AbstractConfigurationParser.java:69) at flex.messaging.config.FlexConfigurationManager.get MessagingConfiguration(FlexConfigurationManager.jav a:79) at flex.messaging.MessageBrokerServlet.init(MessageBr okerServlet.java:106) at org.apache.catalina.core.StandardWrapper.loadServl et(StandardWrapper.java:1161) at org.apache.catalina.core.StandardWrapper.load(Stan dardWrapper.java:981) at org.apache.catalina.core.StandardContext.loadOnSta rtup(StandardContext.java:4045) at org.apache.catalina.core.StandardContext.start(Sta ndardContext.java:4351) at org.apache.catalina.core.ContainerBase.addChildInt ernal(ContainerBase.java:791) at org.apache.catalina.core.ContainerBase.addChild(Co ntainerBase.java:771) at org.apache.catalina.core.StandardHost.addChild(Sta ndardHost.java:525) at org.apache.catalina.startup.HostConfig.deployDescr iptor(HostConfig.java:626) at org.apache.catalina.startup.HostConfig.deployDescr iptors(HostConfig.java:553) at org.apache.catalina.startup.HostConfig.deployApps( HostConfig.java:488) at org.apache.catalina.startup.HostConfig.start(HostC onfig.java:1138) at org.apache.catalina.startup.HostConfig.lifecycleEv ent(HostConfig.java:311) at org.apache.catalina.util.LifecycleSupport.fireLife cycleEvent(LifecycleSupport.java:117) at org.apache.catalina.core.ContainerBase.start(Conta inerBase.java:1053) at org.apache.catalina.core.StandardHost.start(Standa rdHost.java:719) at org.apache.catalina.core.ContainerBase.start(Conta inerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(Stan dardEngine.java:443) at org.apache.catalina.core.StandardService.start(Sta ndardService.java:516) at org.apache.catalina.core.StandardServer.start(Stan dardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalin a.java:566) at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknow n Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Un known Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.start(Bootst rap.java:288) at org.apache.catalina.startup.Bootstrap.main(Bootstr ap.java:413) 2011-6-22 11:06:01 org.apache.catalina.core.ApplicationContext log 資訊: Marking servlet MessageBrokerServlet as unavailable 2011-6-22 11:06:01 org.apache.catalina.core.StandardContext loadOnStartup 嚴重: Servlet /samples threw load() exception javax.servlet.UnavailableException: Unexpected text 'my-polling-amf' found in 'channels' from file: messaging-config.xml. at flex.messaging.MessageBrokerServlet.init(MessageBr okerServlet.java:170) at org.apache.catalina.core.StandardWrapper.loadServl et(StandardWrapper.java:1161) at org.apache.catalina.core.StandardWrapper.load(Stan dardWrapper.java:981) at org.apache.catalina.core.StandardContext.loadOnSta rtup(StandardContext.java:4045) at org.apache.catalina.core.StandardContext.start(Sta ndardContext.java:4351) at org.apache.catalina.core.ContainerBase.addChildInt ernal(ContainerBase.java:791) at org.apache.catalina.core.ContainerBase.addChild(Co ntainerBase.java:771) at org.apache.catalina.core.StandardHost.addChild(Sta ndardHost.java:525) at org.apache.catalina.startup.HostConfig.deployDescr iptor(HostConfig.java:626) at org.apache.catalina.startup.HostConfig.deployDescr iptors(HostConfig.java:553) at org.apache.catalina.startup.HostConfig.deployApps( HostConfig.java:488) at org.apache.catalina.startup.HostConfig.start(HostC onfig.java:1138) at org.apache.catalina.startup.HostConfig.lifecycleEv ent(HostConfig.java:311) at org.apache.catalina.util.LifecycleSupport.fireLife cycleEvent(LifecycleSupport.java:117) at org.apache.catalina.core.ContainerBase.start(Conta inerBase.java:1053) at org.apache.catalina.core.StandardHost.start(Standa rdHost.java:719) at org.apache.catalina.core.ContainerBase.start(Conta inerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(Stan dardEngine.java:443) at org.apache.catalina.core.StandardService.start(Sta ndardService.java:516) at org.apache.catalina.core.StandardServer.start(Stan dardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalin a.java:566) at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknow n Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Un known Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.start(Bootst rap.java:288) at org.apache.catalina.startup.Bootstrap.main(Bootstr ap.java:413) Constructed Start 2011-6-22 11:06:03 org.apache.coyote.http11.Http11AprProtocol start 資訊: Starting Coyote HTTP/1.1 on http-8400 2011-6-22 11:06:03 org.apache.coyote.ajp.AjpAprProtocol start 資訊: Starting Coyote AJP/1.3 on ajp-8009 2011-6-22 11:06:03 org.apache.catalina.startup.Catalina start 資訊: Server startup in 6193 ms 把my-polling-amf去掉就沒有問題了，不知道是為什麼

　　【分析】

　　Unexpected text 'my-polling-amf' found in 'channels' from file: messaging-config.xml.

　　錯誤提示中的這一句說明my-polling-amf的配置有問題

　　參考一下别的channel配置發現問題所在，是自己寫的有問題。

　　【解決】