Java Logger only to file, no screen output

Question

I have quite a simple problem but can\'t find a solution for it. I have a logger with a file handler added, but it still spams the hell out of my console. How could I get the lo

Answer 1

Old question but to help other developers:

You can also just use logger.setUseParentHandlers(false) on your logger.

Answer 2

Remove all handlers (using Logger.getHandlers() and calling Logger.removeHandler() for each handler) from the root logger before adding your file handler.

Answer 3

The simplest way to guarantee that nothing will be written to the console is to put:

java.util.logging.ConsoleHandler.level = NONE

in your logging configuration file.

Answer 4

I use:

Logger logger = Logger.getLogger("MyLog");
    Logger parentLog= logger.getParent();
    if (parentLog!=null&&parentLog.getHandlers().length>0) parentLog.removeHandler(parentLog.getHandlers()[0]);

Answer 5

Use log4j with

import org.apache.log4j.Logger;

Logger logger = Logger.getLogger("com.whatever");
PropertyConfigurator.configure("file-log4j.properties");

and set your display levels in file-log4j.properties:

# Root logger option
log4j.rootLogger=INFO, file

# Direct log messages to a log file
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=index-service.log
log4j.appender.file.MaxFileSize=1MB
log4j.appender.file.MaxBackupIndex=1
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
log4j.appender.file.Append=false