[jboss-jira] [JBoss JIRA] Updated: (JBAS-3316) outdated log4j.jar causes UndeclaredThrowableException

outdated log4j.jar causes UndeclaredThrowableException ------------------------------------------------------ Key: JBAS-3316 URL: http://jira.jboss.com/jira/browse/JBAS-3316 Project: JBoss Application Server Issue Type: Bug Security Level: Public(Everyone can see) Components: Logging Affects Versions: JBossAS-4.0.4.GA Environment: java version 1.5.0_06 macosx Reporter: afm Assigned To: Scott M Stark Fix For: JBossAS-4.0.6.CR1 The log(String callerFQCN, Priority level, Object message, Throwable t) method of org.apache.log4j.Logger in the log4j.jar distributed with JBoss throws a NullPointerException if called with t = null. This then causes an InvocationTargetException on line 288 of org/apache/commons/logging/impl/Log4jProxy.java, leading to an UndeclaredThrowableException on line 296. The problem is that very often the method is called with t = null, e.g. on line 235, in the debug method. This then causes some servlets not to work (Google finds a few instances of this). The cause is a rather outdated log4j.jar. Replacing log4j.jar by a more recent version seems to fix this problem