log4j errors when porting a 5.5 webapp to 6.x:
output/build/webapp/docs/logging.html
1. Create a file called log4j.properties with the following content and
save it into $CATALINA_HOME/lib.
log4j.rootLogger=debug, R
log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=${catalina.home}/logs/tomcat.log
log4j.appender.R.MaxFileSize=10MB
log4j.appender.R.MaxBackupIndex=10
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n
log4j.logger.org.apache.catalina=DEBUG, R
--done no problems--
2. Download Log4J (v1.2 or later) and place the log4j jar in
$CATALINA_HOME/lib.
--done no problems--
3. Build the commons-logging additional component using the extras.xml Ant
build script which is part of the Tomcat source bundle.
--start extras.xml from Tomcat source bundle (which BTW has no references to
log4j) --
<?xml version="1.0"?>
<project name="Tomcat 6.0" default="extras" basedir=".">
<!-- ===================== Initialize Property Values =================== -->
<!-- See "build.properties.sample" in the top level directory for all -->
<!-- property values you must customize for successful building!!! -->
<property file="${user.home}/build.properties"/>
<property file="build.properties"/>
<property file="build.properties.default"/>
<!-- Project Properties -->
<property name="name" value="Apache Tomcat" />
<property name="year" value="2007" />
<property name="version.major" value="6" />
<property name="version.minor" value="0" />
<property name="version.build" value="0" />
<property name="version.patch" value="0" />
<property name="version" value="6.0.0-dev" />
<property name="version.number"
value="${version.major}.${version.minor}.${version.build}.${version.patch}" />
<property name="project" value="apache-tomcat" />
<property name="final.name" value="${project}-${version}" />
<property name="final-src.name" value="${project}-${version}-src" />
<!-- Build Defaults -->
<property name="tomcat.build" value="${basedir}/output/build"/>
<property name="tomcat.classes" value="${basedir}/output/classes"/>
<property name="tomcat.dist" value="${basedir}/output/dist"/>
<property name="tomcat.extras" value="${basedir}/output/extras"/>
<property name="tomcat.deployer" value="${basedir}/output/deployer"/>
<property name="tomcat.release" value="${basedir}/output/release"/>
<property name="test.failonerror" value="true"/>
<property name="test.runner" value="junit.textui.TestRunner"/>
<!-- Can't be lower - jsp uses templates -->
<property name="compile.source" value="1.5"/>
<!-- JAR artifacts -->
<property name="bootstrap.jar" value="${tomcat.build}/bin/bootstrap.jar"/>
<property name="annotations-api.jar"
value="${tomcat.build}/lib/annotations-api.jar"/>
<property name="servlet-api.jar" value="${tomcat.build}/lib/servlet-api.jar"/>
<property name="jsp-api.jar" value="${tomcat.build}/lib/jsp-api.jar"/>
<property name="el-api.jar" value="${tomcat.build}/lib/el-api.jar"/>
<property name="catalina.jar" value="${tomcat.build}/lib/catalina.jar"/>
<property name="catalina-ant.jar"
value="${tomcat.build}/lib/catalina-ant.jar"/>
<property name="catalina-ant-jmx.jar"
value="${tomcat.build}/lib/catalina-ant-jmx.jar"/>
<property name="tomcat-coyote.jar"
value="${tomcat.build}/lib/tomcat-coyote.jar"/>
<property name="jasper.jar" value="${tomcat.build}/lib/jasper.jar"/>
<property name="jasper-el.jar" value="${tomcat.build}/lib/jasper-el.jar"/>
<property name="tomcat-dbcp.home" value="${base.path}/tomcat6-deps/dbcp" />
<property name="jasper-jdt.home" value="${base.path}/tomcat6-deps/jdt" />
<property name="tomcat-dbcp.jar" value="${tomcat-dbcp.home}/tomcat-dbcp.jar"/>
<property name="jasper-jdt.jar" value="${jasper-jdt.home}/jasper-jdt.jar"/>
<property name="tomcat-juli.jar" value="${tomcat.extras}/tomcat-juli.jar"/>
<property name="tomcat-juli-adapters.jar"
value="${tomcat.extras}/tomcat-juli-adapters.jar"/>
<property name="catalina-ws.jar" value="${tomcat.extras}/catalina-ws.jar"/>
<!-- Classpath -->
<path id="tomcat.classpath">
<pathelement location="${tomcat.classes}"/>
</path>
<target name="prepare">
<mkdir dir="${tomcat.extras}"/>
</target>
<target name="clean">
<delete dir="${tomcat.extras}"/>
</target>
<target name="commons-logging">
<antcall target="downloadfile">
<param name="sourcefile" value="${commons-logging-src.loc}"/>
<param name="destfile"
value="${tomcat.extras}/logging/commons-logging-src.tar.gz"/>
<param name="destdir" value="${tomcat.extras}/logging/"/>
</antcall>
<gunzip src="${tomcat.extras}/logging/commons-logging-src.tar.gz"
dest="${tomcat.extras}/logging/commons-logging-src.tar"/>
<untar src="${tomcat.extras}/logging/commons-logging-src.tar"
dest="${tomcat.extras}/logging/"/>
<replace
dir="${tomcat.extras}/logging/commons-logging-1.1-src/src/java/org/apache/commons"
>
<replacefilter token="org.apache.commons"
value="org.apache.juli" />
</replace>
<mkdir
dir="${tomcat.extras}/logging/commons-logging-1.1-src/src/java/org/apache/juli"
/>
<move
todir="${tomcat.extras}/logging/commons-logging-1.1-src/src/java/org/apache/juli">
<fileset
dir="${tomcat.extras}/logging/commons-logging-1.1-src/src/java/org/apache/commons"
/>
</move>
<replace dir="${tomcat.extras}/logging/commons-logging-1.1-src" >
<replacefilter token="org.apache.commons"
value="org.apache.juli" />
<replacefilter token="org/apache/commons/"
value="org/apache/juli/" />
</replace>
<copy tofile="${tomcat.extras}/logging/commons-logging-1.1-src/build2.xml"
file="${tomcat.extras}/logging/commons-logging-1.1-src/build.xml" />
<ant antfile="${tomcat.extras}/logging/commons-logging-1.1-src/build2.xml"
dir="${tomcat.extras}/logging/commons-logging-1.1-src"
target="getlibs" />
<copy todir="${tomcat.extras}/logging/commons-logging-1.1-src">
<fileset dir="${tomcat.extras}/logging/commons-logging-1.1-src/lib" />
</copy>
<ant antfile="${tomcat.extras}/logging/commons-logging-1.1-src/build2.xml"
dir="${tomcat.extras}/logging/commons-logging-1.1-src"
target="compile" />
<jar jarfile="${tomcat-juli.jar}">
<fileset
dir="${tomcat.extras}/logging/commons-logging-1.1-src/target/classes">
<include name="org/apache/juli/logging/*.class" />
<include name="org/apache/juli/logging/impl/LogFactoryImpl*.class" />
<include name="org/apache/juli/logging/impl/WeakHashtable*.class" />
<include name="org/apache/juli/logging/impl/SimpleLog*.class" />
<include name="org/apache/juli/logging/impl/NoOpLog*.class" />
<include name="org/apache/juli/logging/impl/Jdk14Logger.class" />
<include name="META-INF/LICENSE.txt" />
<include name="META-INF/NOTICE.txt" />
<!-- Javadoc and i18n exclusions -->
<exclude name="**/package.html" />
<exclude name="**/LocalStrings_*" />
</fileset>
<fileset dir="${tomcat.classes}">
<include name="org/apache/juli/*" />
<!-- Javadoc and i18n exclusions -->
<exclude name="**/package.html" />
<exclude name="**/LocalStrings_*" />
</fileset>
</jar>
<checksum file="${tomcat-juli.jar}"
forceOverwrite="yes" fileext=".md5" />
<jar jarfile="${tomcat-juli-adapters.jar}">
<fileset
dir="${tomcat.extras}/logging/commons-logging-1.1-src/target/classes">
<include name="org/apache/juli/logging/impl/**.class" />
<exclude name="org/apache/juli/logging/impl/WeakHashtable*.class" />
<exclude name="org/apache/juli/logging/impl/LogFactoryImpl.class" />
<include name="META-INF/LICENSE.txt" />
<include name="META-INF/NOTICE.txt" />
<!-- Javadoc and i18n exclusions -->
<exclude name="**/package.html" />
<exclude name="**/LocalStrings_*" />
</fileset>
</jar>
<checksum file="${tomcat-juli-adapters.jar}"
forceOverwrite="yes" fileext=".md5" />
</target>
<target name="webservices">
<mkdir dir="${tomcat.extras}/webservices"/>
<antcall target="downloadfile">
<param name="sourcefile" value="${jaxrpc-src.loc}"/>
<param name="destfile"
value="${tomcat.extras}/webservices/jaxrpc.jar"/>
<param name="destdir" value="${tomcat.extras}/webservices/"/>
</antcall>
<antcall target="downloadfile">
<param name="sourcefile" value="${wsdl4j-src.loc}"/>
<param name="destfile"
value="${tomcat.extras}/webservices/wsdl4j.jar"/>
<param name="destdir" value="${tomcat.extras}/webservices/"/>
</antcall>
<!-- Classpath -->
<path id="tomcat.webservices.classpath">
<pathelement path="${tomcat.classpath}"/>
<fileset dir="${tomcat.extras}/webservices">
<include name="jaxrpc.jar"/>
<include name="wsdl4j.jar"/>
</fileset>
</path>
<!-- Compile internal server components -->
<javac srcdir="java" destdir="${tomcat.classes}"
debug="${compile.debug}"
deprecation="${compile.deprecation}"
source="${compile.source}"
optimize="${compile.optimize}">
<classpath refid="tomcat.webservices.classpath" />
<include name="org/apache/naming/factory/webservices/**" />
</javac>
<!-- Catalina Main JAR File -->
<jar jarfile="${catalina-ws.jar}">
<fileset dir="${tomcat.classes}">
<include name="org/apache/naming/factory/webservices/**" />
<!-- Javadoc and i18n exclusions -->
<exclude name="**/package.html" />
<exclude name="**/LocalStrings_*" />
</fileset>
</jar>
<checksum file="${catalina-ws.jar}"
forceOverwrite="yes" fileext=".md5" />
</target>
<target name="extras" depends="prepare,commons-logging,webservices">
</target>
<!-- Download and dependency building -->
<target name="proxyflags">
<!-- check proxy parameters. -->
<condition property="useproxy">
<equals arg1="${proxy.use}" arg2="on" />
</condition>
</target>
<target name="setproxy" depends="proxyflags" if="useproxy">
<taskdef name="setproxy"
classname="org.apache.tools.ant.taskdefs.optional.net.SetProxy" />
<setproxy proxyhost="${proxy.host}" proxyport="${proxy.port}"
proxyuser="${proxy.user}" proxypassword="${proxy.password}" />
<echo message="Using ${proxy.host}:${proxy.port} to download
${sourcefile}"/>
</target>
<target name="testexist">
<echo message="Testing for ${destfile}"/>
<available file="${destfile}" property="exist"/>
</target>
<target name="downloadfile" unless="exist" depends="setproxy,testexist">
<!-- Download extract the file -->
<mkdir dir="${destdir}" />
<get src="${sourcefile}" dest="${destfile}" />
</target>
</project>
--end extras.xml (which has no log4j.references) --
4. Replace $CATALINA_HOME/bin/tomcat-juli.jar with
output/extras/tomcat-juli.jar.
--where is output/extras/tomcat-juli.jar in apache-tomcat-6.0.14.zip it is in
bin only?
5. Place output/extras/tomcat-juli-adapters.jar in $CATALINA_HOME/lib.
--where is output/extras/tomcat-juli.jar in apache-tomcat-6.0.14.zip it is in
bin only?
6. Start Tomcat
--no effect log4j is not started..
?
Martin
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> From: [email protected]
> To: [email protected]
> Date: Sat, 4 Apr 2009 21:08:55 -0500
> Subject: RE: How to debug Error: listenerStart?
>
> > From: Dan Armbrust [mailto:[email protected]]
> > Subject: Re: How to debug Error: listenerStart?
> >
> > Perhaps it is behaving different on Tomcat 6. I didn't try 6, only
> > the latest 5.5, since that's what I'm using in production.
>
> Sorry, I didn't realize this was only a 5.5 issue. I did try it again on
> 5.5.27, and verified your findings.
>
> > Also, your stack trace is showing that it was indeed, logged by
> > tomcat's loggers. Did you try renaming the log4j.properties.hidden
> > file that I provided?
>
> Just tried it again on 6.0.18 with the unhidden log4j.properties, and there
> was no difference. Also, with the original, untouched a.war, there were no
> messages about log4j initialization problems. So under 6.0, it appears that
> Tomcat is *not* trying to use your log4j.
>
> > I contend that it should never be printed by log4j, since that is
> > within the webapp which is failing - and tomcat can't know that log4j
> > has been configured. But yet, on my system, that is exactly what is
> > happening.
>
> I think I figured out what's going on. Tomcat 5.5 uses an unmodified
> LogFactory from commons-logging, which pokes around for logging mechanisms -
> and finds your log4j.jar inside your webapp. Tomcat 6.0, on the other hand,
> uses a modified LogFactory, which is hard-coded to use an enhanced version of
> java.util.logging, so it never looks for your log4j. Looks like Tomcat 6
> implements what you're looking for, so you might want to consider moving up.
>
> > I'm also still looking into a (possibly?) related issue
> > that I have where log4j in every webapp deployed beyond
> > the first fails to auto-configure.
>
> I suspect it is related. Since commons-logging is loaded by the system
> classloader, I'm wondering if it may be hanging onto data from the first
> log4j.properties it finds (since there's no global log4j) rather than looking
> for one for each webapp. Again, this doesn't appear to be an issue in 6.0.
>
> - Chuck
>
>
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