使用WebWork(Strust,JSF)+Spring+Hibernate时经常报这种错误,如下:

2011-5-29 13:45:52 org.apache.catalina.core.StandardContext listenerStart
严重: Error configuring application listener of class org.springframework.web.context.ContextLoaderListener
java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener
 at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1358)
 at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
 at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3770)
 at org.apache.catalina.core.StandardContext.start(StandardContext.java:4336)
 at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:761)
 at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:741)
 at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
 at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920)
 at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883)
 at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
 at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138)
 at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
 at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120)
 at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1023)
 at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
 at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1015)
 at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
 at org.apache.catalina.core.StandardService.start(StandardService.java:448)
 at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
 at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
 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)
2011-5-29 13:45:52 org.apache.catalina.core.StandardContext listenerStart

求正解,最好梳理出现这种问题的种种思路,因为这种问题出现的频率真的在我编程的道路上最多。我解决这种问题都凭机缘,都是没得思路,解决的最终后下次遇到又要花费很多时间,所以在此那位仁兄有很好的思路一一列举,