java.lang.ClassNotFoundException: org.springframework.web.util.IntrospectorCleanupListener at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1718) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1569) at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:529) at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:511) at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:139) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4888) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5467) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source)
如果项目是Maven项目，且使用的是eclipse，出现以上问题，右键项目，点击最后一项properties，找到Deployment Assemby，点击右侧的Add，然后选择Java Build Path Entries，选择Maven Dependencies，最后Finish完成即可。
如果项目是普通的web项目，或者是java项目，同样右键项目，点击properties，找到Deployment Assemby，点击右侧的Add，然后选择相应的jar包，最后Finish完成。
