Is it the same output that is also showing up in the log file, or other output? Can you provide a more complete code sample with file output and stdout output? Marshall On Feb 1, 2013, at 9:42 AM, Steve Prior <sprior@geekster.com> wrote:

Anyone? ... Bueller?

Steve -------- Original Message -------- Subject: [logback-user] programmatic configuration to log to file Date: Wed, 30 Jan 2013 20:36:42 -0500

Based on some examples I cobbled together the following code to programmatically configure logback to write its output to a file (I don't like having config files around), but the output still goes to stdout in addition to the file. Can anyone give me a clue how I can only have the output go to the specific file and not stdout?

Thanks Steve

LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory();

FileAppender<ILoggingEvent> fileAppender = new FileAppender<ILoggingEvent>(); fileAppender.setContext(loggerContext); fileAppender.setFile(ConcurrencyExample.class.getSimpleName() + ".log");

PatternLayout pl = new PatternLayout(); pl.setPattern("%d %5p %t [%c:%L] %m%n)"); pl.setContext(loggerContext); pl.start(); fileAppender.setLayout(pl);

fileAppender.start();

// attach the rolling file appender to the logger of your choice Logger logbackLogger = loggerContext.getLogger(ConcurrencyExample.class); logbackLogger.addAppender(fileAppender);

// OPTIONAL: print logback internal status messages StatusPrinter.print(loggerContext);

// log something logbackLogger.info("hello"); _______________________________________________ Logback-user mailing list Logback-user@qos.ch http://mailman.qos.ch/mailman/listinfo/logback-user

_______________________________________________ Logback-user mailing list Logback-user@qos.ch http://mailman.qos.ch/mailman/listinfo/logback-user

Hi Steve, The code for programmatic configuration is good. You just need to reset the context before you configure. Add the following line after the definitionof the loggerContext variable. loggerContext.reset(); HTH, -- Ceki 65% of statistics are made up on the spot On 01.02.2013 19:01, Steve Prior wrote:

On 2/1/2013 12:45 PM, Marshall Pierce wrote:

...

Is it the same output that is also showing up in the log file, or other output? Can you provide a more complete code sample with file output and stdout output?

Marshall

Here is the complete source code (no config files at all): package com.geekster.logbackDemo;

import org.slf4j.LoggerFactory;

import ch.qos.logback.classic.Logger; import ch.qos.logback.classic.LoggerContext; import ch.qos.logback.classic.PatternLayout; import ch.qos.logback.classic.spi.ILoggingEvent; import ch.qos.logback.core.FileAppender;

public class Testcase {

public static void main(String[] args) { LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory();

FileAppender<ILoggingEvent> fileAppender = new FileAppender<ILoggingEvent>(); fileAppender.setContext(loggerContext); fileAppender.setFile(Testcase.class.getSimpleName() + ".log");

PatternLayout pl = new PatternLayout(); pl.setPattern("%d %5p %t [%c:%L] %m%n)"); pl.setContext(loggerContext); pl.start(); fileAppender.setLayout(pl);

fileAppender.start();

Logger logbackLogger = loggerContext.getLogger(Testcase.class); logbackLogger.addAppender(fileAppender);

logbackLogger.info("this should only be in the logfile."); System.out.println("this should only be at the console"); }

}

Here is what gets written to System.out: 12:57:07.496 [main] INFO com.geekster.logbackDemo.Testcase - this should only be in the logfile. this should only be at the console

Here is what gets written to Testcase.log: 2013-02-01 12:57:07,496 INFO main [com.geekster.logbackDemo.Testcase:31] this should only be in the logfile.

So what I'm looking to do is to have the log entry "12:57:07.496 [main] INFO com.geekster.logbackDemo.Testcase - this should only be in the logfile." only appear in the logfile, but not at the console where I only expect "this should only be at the console" to be visible.

Thanks for looking. Steve