模拟器玩虚荣:关于tomcat服务器上使用spring的问题

运行过程中出现：
严重: Error reading tld listeners java.lang.NullPointerException
java.lang.NullPointerException
at org.apache.log4j.Category.isEnabledFor(Category.java:746)
at org.apache.commons.logging.impl.Log4JLogger.isTraceEnabled(Log4JLogger.java:327)
at org.apache.catalina.startup.TldConfig.tldScanResourcePaths(TldConfig.java:581)
at org.apache.catalina.startup.TldConfig.execute(TldConfig.java:282)
at org.apache.catalina.core.StandardContext.processTlds(StandardContext.java:4278)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4115)
at org.apache.catalina.core.StandardContext.reload(StandardContext.java:2990)
at org.apache.catalina.loader.WebappLoader.backgroundProcess(WebappLoader.java:403)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1277)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1569)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1578)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1578)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1558)
at java.lang.Thread.run(Unknown Source)
请问如何解决
呵呵，原因都没搞清楚,就重装......