Log4j 설정 (file vs xml)

Java Program에서 System.out.println("").. 외에 자주 사용하는것이 log4J 이다

실행해주는 luncher의 특성에 따라서 xml형태의 log4j를 load 못하는 형태가 있다.

이때 jar 에 정의된 log4j는 따로 log를 남기기 어렵다

이때 다음과 같이 file 형태로 log4j를 설정하면 application과 달리 log남기는것이 가능하다

xml형태의 log4j를 file형태로 변환 한 예이다.

<log4j.xml>

<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE log4j:configuration SYSTEM "log4j.dtd"> <log4j:configuration debug="true" xmlns:log4j="http://jakarta.apache.org/log4j/"> <appender name="SAEMUL" class="org.apache.log4j.DailyRollingFileAppender"> <param name="File" value="/LOGS/smb/sa/sa_${saiId}_${num}.log" /> <param name="Encoding" value="UTF-8" /> <param name="DatePattern" value="'.'yyyy-MM-dd" /> <param name="ImmediateFlush" value="true" /> <param name="Append" value="true" /> <layout class="org.apache.log4j.PatternLayout"> <param name="ConversionPattern" value="%d{ABSOLUTE} %5p [%c{1}:%L] - %m%n" /> </layout> </appender> <appender name="SASTATISTICS" class="org.apache.log4j.DailyRollingFileAppender"> <param name="File" value="/LOGS/smb/statistics_sa/statistics_sa_${saiId}_${num}.log" /> <param name="Encoding" value="UTF-8" /> <param name="DatePattern" value="'.'yyyy-MM-dd" /> <param name="ImmediateFlush" value="true" /> <param name="Append" value="true" /> <layout class="org.apache.log4j.PatternLayout"> <param name="ConversionPattern" value="%d{ABSOLUTE} %5p [%c{1}:%L] - %m%n" /> </layout> </appender> <appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender"> <param name="Encoding" value="UTF-8" /> <param name="ImmediateFlush" value="true" /> <layout class="org.apache.log4j.PatternLayout"> <param name="ConversionPattern" value="%d{ABSOLUTE} %5p [%c{1}:%L] - %m%n" /> </layout> </appender> <logger name="com.sds.smb.component"> <level value="DEBUG" /> <appender-ref ref="SAEMUL" /> </logger> <logger name="com.sds.smb.net"> <level value="INFO" /> <appender-ref ref="SAEMUL" /> </logger> <logger name="com.sds.smb.log.statistics"> <level value="DEBUG" /> <appender-ref ref="SASTATISTICS" /> </logger> <logger name="org.springframework"> <level value="INFO" /> <appender-ref ref="SAEMUL" /> </logger> <root> <level value="INFO" /> <appender-ref ref="CONSOLE" /> </root> </log4j:configuration>

<SaLog.java>

import java.io.IOException; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.log4j.DailyRollingFileAppender; import org.apache.log4j.Logger; import org.apache.log4j.PatternLayout; /**  * @author juseok.yun  * @version 2.0  * @date 2013. 3. 28.  */ public class SaLog {       Log log = LogFactory.getLog(getClass());              /**        * SA Log file location setting method.        */       public SaLog(String SaiId)       {             loadSaLogger(SaiId);                          loadStatisticsLogger(SaiId);       }       private void loadStatisticsLogger(String SaiId)       {             Logger logger = null;             String filename = null;                          logger = Logger.getLogger("com.sds.smb.log.statistics");             filename = addStatisticsLogger(SaiId, logger);                         log.info("sa Statistics log Load : " + filename);       }       private void loadSaLogger(String SaiId)       {             Logger logger = null;             String filename = null;                          logger = Logger.getLogger("com.sds.smb.component");             filename = addLogger(SaiId, logger);                          logger = Logger.getLogger("com.sds.smb.net");             filename = addLogger(SaiId, logger);                          logger = Logger.getLogger("org.springframework");             filename = addLogger(SaiId, logger);                          log.info("sa log Load : " + filename);       }       private String addLogger(String SaiId, Logger logger)       {             String filename = "/LOGS/smb/sa/sa_"+ SaiId + ".log";                          return makeLogger(logger, filename);       }              private String addStatisticsLogger(String SaiId, Logger logger)       {             String filename = "/LOGS/smb/statistics_sa/statistics_sa_"+ SaiId + ".log";                          return makeLogger(logger, filename);       }       private String makeLogger(Logger logger, String filename)       {             String pattern = "%d{ABSOLUTE} %5p [%c{1}:%L] - %m%n";             PatternLayout layout = new PatternLayout(pattern);                          String datePattern = "'.'yyyy-MM-dd";                          DailyRollingFileAppender appender = null;             try             {                   appender = new DailyRollingFileAppender(layout, filename, datePattern);             }             catch (IOException e)             {                   e.printStackTrace();             }                          logger.addAppender(appender);             return filename;       } }

별내용 아니었는데.. 참 애를 먹였다..

google에서 찾아도 잘 안나와서 남긴다..