1. src 밑에

log4j.properties

---------------------------------------------------------------------------------------------------------------

log4j.rootLogger=INFO, console, file

log4j.appender.console=org.apache.log4j.ConsoleAppender

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

log4j.appender.console.layout.ConversionPattern=[%p], %d{yyyy-MM-dd HH:mm:ss}, %m %n

log4j.appender.file=org.apache.log4j.DailyRollingFileAppender

log4j.appender.Threshold=DEBUG

log4j.appender.file.File=../output.log

log4j.appender.file.Append=true

log4j.appender.logfile.MaxFileSize=100000KB

log4j.appender.file.DatePattern='.'yyyy-MM-dd'.log'

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

log4j.appender.file.layout.ConversionPattern=[%p], %d{yyyy-MM-dd HH:mm:ss}, %m %n

log4j.appender.file.encoding=EUC-KR

---------------------------------------------------------------------------------------------------

2. 추가 jar파일

log4j-1.2.17.jar

3. coding

Logger log4j = Logger.getLogger(LogTest.class);

log4j.warn("Low fuel level.");

log4j.debug("Starting search for nearest gas station.");

4. log4j.properties 위치지정
 <listener>
  <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
 </listener>
 <context-param>
  <param-name>log4jConfigLocation</param-name>
  <param-value>/WEB-INF/log4j.properties</param-value>
 </context-param>