Apache log4j

Apache log4j

http://logging.apache.org/log4j/1.2/

http://logging.apache.org/log4j/1.2/download.html

참고 (콘솔출력시)

http://logging.apache.org/log4j/1.2/apidocs/index.html

다운로드 후 

라이브러리 추가시킴

src => log4j.properties 파일 생성

# log4j.properties

# log level - TRACE -> DEBUG -> INFO -> WARN -> ERROR -> FATAL 

log4j.rootLogger=DEBUG, stdout

# output type

# => fileAppender, ConsoleAppender, SocketAppender etc.

log4j.appender.stdout=org.apache.log4j.ConsoleAppender

# output text layout type

# => SimpleLayout,HTMLLayout,PatternLayout,XMLLayout etc.

log4j.appender.stdout.layout=org.apache.log4j.PatternLayout

# output text pattern

# %p - output level

# %t - thread name

# %m - log contents

# %n - new line

log4j.appender.stdout.layout.ConversionPattern= %5p [%t] %m%n