Log4j Configuration

Tools/Software’s required

1. Eclipse

2. log4j-1.2.15.jar

3. Tomcat Server 6.0

We need to fallow simple below steps.

STEP 1: Keep below log4.properties file in WEB-INF/classes.

# Root logger option

log4j.rootLogger=DEBUG, stdout, file

# Redirect log messages to console

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

log4j.appender.stdout.Target=System.out

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

log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n

# Redirect log messages to a log file, support file rolling.

log4j.appender.file=org.apache.log4j.RollingFileAppender

log4j.appender.file.File=D:\\log4j-application.log

log4j.appender.file.MaxFileSize=5MB

log4j.appender.file.MaxBackupIndex=10

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

log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n

# STOP NON-APPLICATION LOGS

log4j.logger.org.hibernate=OFF

log4j.logger.org.springframework=OFF
log4j.logger.org.apache.commons=OFF

STEP 2: Keep below entry in required class. This will be a class level declaration.

Example:

final static Logger logger = Logger.getLogger(LoginController.class);