java - Tomcat 7 - java.lang.NoClassDefFoundError : org/apache/log4j/spi/ThrowableInformation

Question

我面临以下异常:

Mar 26, 2012 1:20:34 PM org.apache.catalina.loader.WebappClassLoader loadClass
INFO: Illegal access: this web application instance has been stopped already.  
Could not   load org.apache.log4j.spi.ThrowableInformation.  
The eventual following stack trace is caused by an error thrown for debugging purposes 
as well as to attempt to terminate the thread which caused the illegal access, and has  
no functional impact.
java.lang.IllegalStateException
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1562)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1521)
at org.apache.log4j.spi.LoggingEvent.<init>(LoggingEvent.java:165)
at org.apache.log4j.Category.forcedLog(Category.java:391)
at org.apache.log4j.Category.error(Category.java:322)
at com.abc.supervisionmanager.Monitoring.run(Monitoring.java:205)
at java.lang.Thread.run(Thread.java:662)
Exception in thread "Thread_Monitoring" java.lang.NoClassDefFoundError: org/apache/log4j/spi/ThrowableInformation
at org.apache.log4j.spi.LoggingEvent.<init>(LoggingEvent.java:165)
at org.apache.log4j.Category.forcedLog(Category.java:391)
at org.apache.log4j.Category.error(Category.java:322)
at com.abc.supervisionmanager.Monitoring.run(Monitoring.java:205)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.ClassNotFoundException: org.apache.log4j.spi.ThrowableInformation
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1676)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1521)
... 5 more

我用谷歌搜索了这个异常，发现大多数答案都指出它是 tomcat 5.5 中的错误，它将在 5.5.28 版本中解决。

但是我目前使用 tomcat 7.11 和 log4j-1.2.16.jar 我仍然面临同样的问题。

Answer 1

对我来说，这个问题的解决方案(使用 Openbravo 3.0MP11 和 Tomcat 7.0.21 测试)是:

1. 从 WEB-INF/lib 中删除 log4j-1.2.16.jar。
2. 将 log4j jar 放入 Tomcat 的 lib 目录中。在 Ubuntu 11.10 中，这将是 /usr/share/tomcat7/lib

注意我的 Openbravo 特定用例:这确实解决了 log4j 问题，但后来我遇到了其他问题。