struts与slf4j有冲突吗？

严重: StandardWrapper.Throwable 
java.lang.NoSuchMethodError: org.apache.log4j.Logger.isTraceEnabled()Z 
at org.slf4j.impl.Log4jLoggerAdapter.isTraceEnabled(Log4jLoggerAdapter.java:81) 
at org.apache.commons.logging.impl.SLF4JLocationAwareLog.isTraceEnabled(SLF4JLocationAwareLog.java:61) 
at org.apache.commons.digester.Digester.pushParams(Digester.java:2767) 
at org.apache.commons.digester.CallMethodRule.begin(CallMethodRule.java:444) 
at org.apache.commons.digester.Rule.begin(Rule.java:152) 
at org.apache.commons.digester.Digester.startElement(Digester.java:1286) 
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:501) 
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:400) 
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2740) 
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:645) 
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:140) 
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:508) 
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807) 
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737) 
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107) 
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205) 
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522) 
at org.apache.commons.digester.Digester.parse(Digester.java:1591) 
at org.apache.struts.action.ActionServlet.initServlet(ActionServlet.java:1433) 
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:466) 
at javax.servlet.GenericServlet.init(GenericServlet.java:212) 
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1161) 
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:981) 
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4044) 
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4350) 
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)