我的tomcat一直用的好好的，可是一设置连接数据库后，就启动不了了，总是启动到一半突然消失，状态是stopped，显示8080端口被SQL占用了，于是我更改了tomcat的端口，还是不可以，附上错误代码如下：
2008-11-26 22:56:40 org.apache.coyote.http11.Http11Protocol init
信息: Initializing Coyote HTTP/1.1 on http-8081
2008-11-26 22:56:40 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 985 ms
java.lang.reflect.InvocationTargetException
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.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)
Caused by: java.lang.NoClassDefFoundError: org/apache/naming/ContextBindings
at org.apache.naming.java.javaURLContextFactory.getInitialContext(javaURLContextFactory.java:97)
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:667)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:247)
at javax.naming.InitialContext.init(InitialContext.java:223)
at javax.naming.InitialContext.(InitialContext.java:175)
at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.createMBeans(GlobalResourcesLifecycleListener.java:117)
at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.lifecycleEvent(GlobalResourcesLifecycleListener.java:97)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:2306)
at org.apache.catalina.startup.Catalina.start(Catalina.java:556)
... 6 more
希望能帮帮我！谢谢
