[slf4j-user] Logging to file with slf4j.Logger. Where do log file go?

Tom Martin Norvang tnorvang at gmail.com
Thu Mar 19 15:06:54 CET 2009


Hi i am new to slf4j and have a few questions. I could not find out how to
search the mailing list for older messages that might contain this subject.
And i have searched everywhere online :)..almost.

1. Where do log files go when using the slf4j.Logger, f.ex;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class Testing {

    private static final Logger LOGGER =
LoggerFactory.getLogger(Testing.class);

    public static void main(String[] args) {

        int value = 10;
        LOGGER.debug("the variable value ="+value);
        LOGGER.debug("The value of value = "+value);
    }
}

I am currently using eclipse, project structure and have placed a
logback.xml file under the project root folder. The logback.xml file is an
example file from the slf4j homepage;
<configuration>

  <appender name="FILE" class="ch.qos.logback.core.FileAppender">
    <file>"c:\testlog1.log"</file>

    <layout class="ch.qos.logback.classic.PatternLayout">
      <Pattern>%date %level [%thread] %logger{10} [%file:%line]
%msg%n</Pattern>
    </layout>
  </appender>

  <root>
    <level value="debug" />
    <appender-ref ref="FILE" />
  </root>
</configuration>

No complaining about the slf4j jar files either.
The small application runs fine but i suspect that my logback.xml file is
not in the right place and not read at all. I have tried to put it in
several locations (JAVA_HOME, path, src folder etc). to no avail. I also did
a search trough the whole disc, but no such file(testlog1.log). Any ideas
what i am doing wrong. By the way i am on WinXP SP2 with JDK1.6.11.
Installed.

Regards Tom Martin
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