Yes, there is a much easier method, at least this works very well for
me.
In log4j.properties, define the following ...
log4j.rootLogger=info, R
log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=../data/${logfile.name}
and then in your code you simple set the name as follows ...
logger = Logger::getLogger("MyApp");
setenv("logfile.name", "MyApp.log", 1);
Very simple!
David
On Mon, 2008-06-09 at 11:38 -0700, Peter Steele wrote:
> I am using the following code to set the log file dynamically instead
> of defining it in the xml file:
>
>
>
> DOMConfigurator::configure(config);
>
> LoggerPtr logger = Logger::getLogger(cat_name);
>
> FileAppenderPtr appender = logger->getAppender("FILE");
>
> Pool p;
>
> appender->setFile(log_name);
>
> appender->activateOptions(p);
>
>
>
> This works with one small side effect. It seems I have to provide a
> default setting for the File parameter in the xml config file,
> otherwise the configure command complains when the app runs. So I
> tried doing this:
>
>
>
> <appender name="FILE" class="org.apache.log4j.FileAppender">
>
> <param name="Append" value="true" />
>
> <param name="File" value="TBD" />
>
> <layout class="org.apache.log4j.PatternLayout">
>
> <param name="ConversionPattern" value="%d %-5p [%t] [%c{1}] %m%
> n"/>
>
> </layout>
>
> </appender>
>
>
>
> but this ended up creating an empty file called TBD before the call to
> setFile had a chance to run. I have a workaround where I set File
> to /dev/null instead of TBD and this seems to work. Is there a
> better/correct way to do this?
>
> ]
>
>
