There is!
<!-- SLF4J Bridge -->
<!-- If existing components use SLF4J and you want to have this logging
routed to Log4j 2 -->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-slf4j-impl</artifactId>
<version>2.5</version>
</dependency>
On 29 January 2016 at 17:18, Paul Benedict <[email protected]> wrote:
> I could be wrong, but I thought log4j2 provides the equivalent bridging
> functionality to other logging frameworks.
>
> Cheers,
> Paul
>
> On Fri, Jan 29, 2016 at 11:14 AM, Greg Huber <[email protected]> wrote:
>
> > Yes, if you are logging directly to log4j2 but if other jars use slf4j
> you
> > need to delegate the logging (create a log4j2.xml if upgrading from v1,
> > note the format is also different!)
> >
> >
> > <dependency>
> > <groupId>org.slf4j</groupId>
> > <artifactId>slf4j-api</artifactId>
> > <version>1.7.14</version>
> > </dependency>
> > <dependency>
> > <groupId>org.apache.logging.log4j</groupId>
> > <artifactId>log4j-slf4j-impl</artifactId>
> > <version>2.5</version>
> > </dependency>
> >
> > Cheers Greg
> >
> >
> > ######################################
> > here is what i use, via Jakarta Commons Logging JCL.
> >
> > (.....although my velocity is logging to the console!)
> >
> > <dependencies>
> > <!-- Jakarta Commons Logging JCL -->
> > <dependency>
> > <groupId>commons-logging</groupId>
> > <artifactId>commons-logging</artifactId>
> > <version>1.2</version>
> > </dependency>
> >
> > <!-- Actual Logging Implementation log4j 2 -->
> > <dependency>
> > <groupId>org.apache.logging.log4j</groupId>
> > <artifactId>log4j-core</artifactId>
> > <version>2.5</version>
> > </dependency>
> > <dependency>
> > <groupId>org.apache.logging.log4j</groupId>
> > <artifactId>log4j-api</artifactId>
> > <version>2.5</version>
> > </dependency>
> >
> > <!-- Logging redirects -->
> > <!-- log4j 2 Jakarta Commons Logging JCL Bridge -->
> > <!-- If existing components use Apache Commons Logging 1.x will
> > delegate
> > all Jakarta Commons Logging JCL Log4j 2 -->
> > <dependency>
> > <groupId>org.apache.logging.log4j</groupId>
> > <artifactId>log4j-jcl</artifactId>
> > <version>2.5</version>
> > </dependency>
> > <!-- SLF4J Bridge -->
> > <!-- If existing components use SLF4J and you want to have this
> logging
> > routed to Log4j 2 -->
> > <dependency>
> > <groupId>org.apache.logging.log4j</groupId>
> > <artifactId>log4j-slf4j-impl</artifactId>
> > <version>2.5</version>
> > </dependency>
> >
> > <!-- slf4j Logging -->
> > <dependency>
> > <groupId>org.slf4j</groupId>
> > <artifactId>slf4j-api</artifactId>
> > <version>1.7.14</version>
> > </dependency>
> > <!-- SLF4J Bridge. Not used see above log directly to Log4j 2 -->
> > <!-- slf4j bridge to Jakarta Commons Logging JCL and will delegate
> all
> > SLF4J
> > logging to Jakarta Commons Logging JCL. -->
> > <!-- <dependency> <groupId>org.slf4j</groupId>
> > <artifactId>slf4j-jcl</artifactId>
> > <version>1.7.14</version> </dependency -->
> > </dependencies>
> >
> > <Configuration>
> >
> > <Properties>
> > <Property name="log-path">${sys:catalina.home}/logs</Property>
> > </Properties>
> >
> > <Appenders>
> >
> > <RollingFile name="RollingFile" fileName="${log-path}/events.log"
> > filePattern="${log-path}/events-%d{yyyy-MM-dd}-%i.log">
> >
> > <PatternLayout>
> > <pattern>%d %-5p %c %C{1}:%M - %m%n</pattern>
> > </PatternLayout>
> >
> > <Policies>
> > <TimeBasedTriggeringPolicy /><!-- Rotated everyday -->
> > <SizeBasedTriggeringPolicy size="999KB" />
> > </Policies>
> >
> > <DefaultRolloverStrategy max="3" />
> > </RollingFile>
> >
> > </Appenders>
> >
> > <Loggers>
> >
> > <Root level="ERROR" additivity="false">
> > <AppenderRef ref="RollingFile" />
> > </Root>
> >
> > </Loggers>
> >
> > </Configuration>
> >
> > On 29 January 2016 at 16:48, Martin Gainty <[email protected]> wrote:
> >
> > > Hi Greg-
> > >
> > > can you confirm these dependencies for log4j?
> > >
> > > <dependencies> <dependency>
> > > <groupId>org.apache.logging.log4j</groupId>
> > > <artifactId>log4j-api</artifactId> <version>2.5</version>
> > > </dependency> <dependency>
> > > <groupId>org.apache.logging.log4j</groupId>
> > > <artifactId>log4j-core</artifactId> <version>2.5</version>
> > > </dependency> <dependency> <groupId>junit</groupId>
> > > <artifactId>junit</artifactId> <version>4.9</version>
> > > <scope>test</scope> </dependency> </dependencies>
> > > Thanks!
> > > Martin
> > > ______________________________________________
> > >
> > >
> > >
> > > > Date: Fri, 29 Jan 2016 16:04:18 +0000
> > > > Subject: Re: Upgrade to tiles 3 jcl-over-slf4j
> > > > From: [email protected]
> > > > To: [email protected]
> > > >
> > > > Well, I currently log with commons, but to get struts logging
> working I
> > > > have had to upgrade to v2 and use the log4j2.xml file.
> > > >
> > > > Also a good idea to bypass the commons for slf4j and go directly.
> > > >
> > > > Cheers Greg
> > > >
> > > >
> > > >
> > > > On 29 January 2016 at 15:07, Christoph Nenning <
> > > > [email protected]> wrote:
> > > >
> > > > > > Should jcl-over-slf4j be in the tiles-core pom?
> > > > > >
> > > > >
> > > > > I see that it is currently the case but I do not need it.
> > > > >
> > > > >
> > > > > > <snip />
> > > > > > slf4j-jcl is used to delegate all SLF4J logging to Commons
> Logging.
> > > > > > <snip />
> > > > > > and then log4j-jcl to delegate all to Commons Logging to log4j 2
> > > > >
> > > > > SLF4J can be forwarded to log4j 2 directly with log4j-slf4j-impl.
> > > There is
> > > > > no need to include Commons Logging (if you don't need it for other
> > > reasons
> > > > > than forwarding).
> > > > >
> > > > > <dependency>
> > > > > <groupId>org.apache.logging.log4j</groupId>
> > > > > <artifactId>log4j-slf4j-impl</artifactId>
> > > > > </dependency>
> > > > >
> > > > >
> > > > >
> > > > > Regards,
> > > > > Christoph
> > > > >
> > > > >
> > > > >
> > > > > > It seems to be an option for migrating from Jakarta Commons
> Logging
> > > > > which
> > > > > > some might not want to do.
> > > > > >
> > > > > > <dependency>
> > > > > > <groupId>org.slf4j</groupId>
> > > > > > <artifactId>jcl-over-slf4j</artifactId>
> > > > > > </dependency>
> > > > > >
> > > > > >
> > > > > > http://www.slf4j.org/legacy.html
> > > > > >
> > > > > > To ease migration to SLF4J from JCL
> > > > > >
> > > > > > #####
> > > > > >
> > > > > > I use Jakarta Commons Logging.
> > > > > >
> > > > > >
> > > > > > slf4j-jcl is used to delegate all SLF4J logging to Commons
> Logging.
> > > > > >
> > > > > > <dependency>
> > > > > > <groupId>org.slf4j</groupId>
> > > > > > <artifactId>slf4j-jcl</artifactId>
> > > > > > </dependency>
> > > > > >
> > > > > >
> > > > > > and then log4j-jcl to delegate all to Commons Logging to log4j 2
> > > > > >
> > > > > > <dependency>
> > > > > > <groupId>org.apache.logging.log4j</groupId>
> > > > > > <artifactId>log4j-jcl</artifactId>
> > > > > > <version>2.5</version>
> > > > > > </dependency>
> > > > > >
> > > > > >
> > > > > >
> > > > > > Cheers Greg.
> > > > >
> > > > >
> > > > > This Email was scanned by Sophos Anti Virus
> > > > >
> > >
> >
>
