javax.servlet.ServletContext.getContextPath()Ljava/lang/String;

严重: Exception sending context initialized event to listener instance of class com.sun.faces.config.ConfigureListener
java.lang.NoSuchMethodError: javax.servlet.ServletContext.getContextPath()Ljava/lang/String;
 at com.sun.faces.config.WebConfiguration.getServletContextName(WebConfiguration.java:221)
 at com.sun.faces.config.WebConfiguration.<init>(WebConfiguration.java:82)
 at com.sun.faces.config.WebConfiguration.getInstance(WebConfiguration.java:152)
 at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:279)
 at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3843)
 at org.apache.catalina.core.StandardContext.start(StandardContext.java:4350)
 at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
 at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
 at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
 at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:924)
 at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:887)
 at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
 at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1147)
 at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
 at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
 at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
 at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
 at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
 at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
 at org.apache.catalina.core.StandardService.start(StandardService.java:516)
 at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
 at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
 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 org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
 at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
2010-12-22 13:22:28 org.apache.catalina.core.StandardContext start
严重: Error listenerStart

解决方法：

   要用J2EE 1.4 的Lib  不能用 J2EE 5 LIB ，JDK 用1.5 
Tomcat 6.0  
这样才不会出问题，

如果，上面都不变，就把 J2EE 1.4改为 J2EE 5 Lib 的话，就会报这个错，
如果不加的话，也会报这个错。