Tomcat webapp NoClassDefFoundError在類路徑上使用jar

Question

部署新的webapp時遇到NoClassDefFoundError。我是在現有的獨立的應用程序並將其轉換成爲一個web應用程序，但是當沒有找到一個類被拋出它通常會導致罐子是不是在classpath ...

SEVERE: Exception sending context destroyed event to listener instance of class org.springframework.web.context.ContextLoaderListener 
java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory 
at org.springframework.web.context.ContextCleanupListener.<clinit>(ContextCleanupListener.java:43) 
at org.springframework.web.context.ContextLoaderListener.contextDestroyed(ContextLoaderListener.java:116) 
at org.apache.catalina.core.StandardContext.listenerStop(StandardContext.java:4245) 
at org.apache.catalina.core.StandardContext.stop(StandardContext.java:4886) 
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4750) 
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:799) 
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:779) 
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:601) 
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:943) 
at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:778) 
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:504) 
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1385) 
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:306) 
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142) 
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1389) 
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1653) 
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1662) 
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1642) 
at java.lang.Thread.run(Thread.java:745) 

Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory 
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680) 
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526) 
... 19 more 

共享記錄-1.1。 1.jar是我的tomcat/webapps /目錄應用程序/ WEB-INF/lib目錄

/var/lib/tomcat6/webapps# ls jmanager/WEB-INF/lib/ | grep commons 
commons-beanutils-1.8.3.jar 
commons-beanutils-core-1.7.0.jar 
commons-cli-1.2.jar 
commons-codec-1.9.jar 
commons-collections-3.2.1.jar 
commons-configuration-1.5.jar 
commons-digester-1.8.jar 
commons-fileupload-1.2.2.jar 
commons-httpclient-3.1.jar 
commons-io-2.4.jar 
commons-lang-2.6.jar 
commons-logging-1.1.1.jar 
commons-management-1.0.jar 

我其他的想法是，也許罐子存在於服務器上，當我的應用程序部署它的碰撞。我在服務器上找不到任何commons-logging jar，其他共享文件夾都是空的。

/usr/share/tomcat6/lib# ls -al 
total 8 
drwxr-xr-x 2 tomcat6 tomcat6 4096 Aug 25 14:32 . 
drwxr-xr-x 7 tomcat6 tomcat6 4096 Aug 25 14:32 .. 
lrwxrwxrwx 1 root root  37 Jun 22 09:29 annotations-api.jar -> ../../java/annotations-api-6.0.35.jar 
lrwxrwxrwx 1 root root  34 Jun 22 09:29 catalina-ant.jar -> ../../java/catalina-ant-6.0.35.jar 
lrwxrwxrwx 1 root root  33 Jun 22 09:29 catalina-ha.jar -> ../../java/catalina-ha-6.0.35.jar 
lrwxrwxrwx 1 root root  30 Jun 22 09:29 catalina.jar -> ../../java/catalina-6.0.35.jar 
lrwxrwxrwx 1 root root  37 Jun 22 09:29 catalina-tribes.jar -> ../../java/catalina-tribes-6.0.35.jar 
lrwxrwxrwx 1 root root  27 Jun 22 09:29 commons-dbcp.jar -> ../../java/commons-dbcp.jar 
lrwxrwxrwx 1 root root  27 Jun 22 09:29 commons-pool.jar -> ../../java/commons-pool.jar 
lrwxrwxrwx 1 root root  25 Jun 22 09:29 el-api.jar -> ../../java/el-api-2.1.jar 
lrwxrwxrwx 1 root root  31 Jun 22 09:29 jasper-el.jar -> ../../java/jasper-el-6.0.35.jar 
lrwxrwxrwx 1 root root  28 Jun 22 09:29 jasper.jar -> ../../java/jasper-6.0.35.jar 
lrwxrwxrwx 1 root root  18 Jun 22 09:29 jasper-jdt.jar -> ../../java/ecj.jar 
lrwxrwxrwx 1 root root  26 Jun 22 09:29 jsp-api.jar -> ../../java/jsp-api-2.1.jar 
lrwxrwxrwx 1 root root  30 Jun 22 09:29 servlet-api.jar -> ../../java/servlet-api-2.5.jar 
lrwxrwxrwx 1 root root  35 Jun 22 09:29 tomcat-coyote.jar -> ../../java/tomcat-coyote-6.0.35.jar 
lrwxrwxrwx 1 root root  36 Jun 22 09:29 tomcat-i18n-es.jar -> ../../java/tomcat-i18n-es-6.0.35.jar 
lrwxrwxrwx 1 root root  36 Jun 22 09:29 tomcat-i18n-fr.jar -> ../../java/tomcat-i18n-fr-6.0.35.jar 
lrwxrwxrwx 1 root root  36 Jun 22 09:29 tomcat-i18n-ja.jar -> ../../java/tomcat-i18n-ja-6.0.35.jar 

有什麼我可以忽略嗎？

Answer 1

升級到commons-logging 1.2解決了這個問題。我使用maven來管理我的依賴關係，但仍然困惑爲什麼1.1.1不起作用，但無論如何。

Answer 2

可能的原因：

• Tomcat沒有運行作爲根
• 公地測井1.1.1.jar不具有類org.apache.commons.logging.LogFactory內部。