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From Paul Benedict <pbened...@apache.org>
Subject Re: Upgrade to tiles 3 jcl-over-slf4j
Date Fri, 29 Jan 2016 17:18:54 GMT
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 <gregh3269@gmail.com> 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 <mgainty@hotmail.com> 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: gregh3269@gmail.com
> > > To: dev@struts.apache.org
> > >
> > > 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 <
> > > Christoph.Nenning@lex-com.net> 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
> > > >
> >
>

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