错误信息： 
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:1720) 
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571) 
at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:506) 
at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:488) 
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:115) 
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4932) 
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5528) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
at org.apache.catalina.core.ContainerBaseStartChild.call(ContainerBase.java:1575) 
at org.apache.catalina.core.ContainerBaseStartChild.call(ContainerBase.java:1565) 
at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
at java.lang.Thread.run(Thread.java:745)

问题原因：tomcat缓存问题

问题解决：