Log4J creates log file but does not write to it

Question

I\'m trying to configure log4j to log messages to a file. Right now, the file does get created with the name I provide, but the logs are not written to the file. My code:

Answer 1

I had the same problem as you. File was created, but without any loggs in it just in console. And it was because of incorrect dependencies in maven project in my case.

My log4j.properties file was:

# Root logger option
log4j.rootLogger=DEBUG, file

# Direct log messages to a log file
# configuration to print into file
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.MaxFileSize=1MB
log4j.appender.file.MaxBackupIndex=10
# Define the layout for file appender
log4j.appender.file.layout=org.apache.log4j.PatternLayout
#log4j.appender.file.layout.ConversionPattern=[%t] %-5p %c %x - %m%n
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
# Set the name of the file
log4j.appender.file.File=C:\\log\\logging.log
# Set the append to false, overwrite
log4j.appender.file.Append=false

And I used in POM:

  org.slf4j
  slf4j-simple
  1.6.2



  log4j
  log4j
  1.2.17

Yes, it created for me file where I needed it, but logs were in console. Then I changed it to another dependency like:

    org.slf4j
    slf4j-log4j12
    1.7.5

And I finally got it in file instead of console. Even without any explicit commands like PropertyConfigurator.configure().