Pratical Example Logging using logback with example

Steps to implement logging in core Java

1. Eclipse – include libraries ie logback-classic,core,access,slf4j-api.
2. Sample program

package testlogger;

import org.apache.log4j.PropertyConfigurator;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import ch.qos.logback.classic.LoggerContext;

import ch.qos.logback.classic.PatternLayout;

import ch.qos.logback.classic.spi.LoggingEvent;

import ch.qos.logback.core.FileAppender;

import ch.qos.logback.core.util.StatusPrinter;

public class LoggerMain {

      private final Logger logger = LoggerFactory.getLogger(getClass());

      public static void main(String[] args) {

            //  PropertyConfigurator.configure("log4j.properties");

              new ConfigureLogBack();

            LoggerMain lm = new LoggerMain();

           

         

            lm.putLogger();

      }

      public void putLogger() {

            LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();

          StatusPrinter.print(lc);

            logger.info("Hello");

      }

}

 

3. In the classpath user librabries set the location of logback.xml

<configuration>

  <substitutionProperty name="log.dir" value="D:\\logging\\" />

  <substitutionProperty name="log.file" value="${logback.file.name}" />

 

  <appender name="STDOUT"

    class="ch.qos.logback.core.ConsoleAppender">     

     <layout class="ch.qos.logback.classic.PatternLayout">

      <Pattern>%d{yyyyMMdd-HH:mm:ss.SSSZ} [%thread] %-5level %logger.%method - %msg%n</Pattern>

      </layout>

  </appender>

 

  <appender name="STDOUT_inforeach" class="ch.qos.logback.core.ConsoleAppender">

        <layout class="ch.qos.logback.classic.PatternLayout">

            <Pattern>%date{HH:mm:ss.SSS} %level %msg%n</Pattern>

        </layout>

   </appender>

 

  <appender name="FILE_DATE_ROLL"

    class="ch.qos.logback.core.rolling.RollingFileAppender">

    <file>${log.dir}/${log.file}.log</file>

    <Append>true</Append>

    <Encoding>UTF-8</Encoding>

    <BufferedIO>false</BufferedIO>

    <BufferSize>8192</BufferSize>

    <ImmediateFlush>true</ImmediateFlush>

    <rollingPolicy

      class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">

      <FileNamePattern>

          ${log.dir}/bak/${log.file}-%d{yyyy-MM-dd}.log.zip

      </FileNamePattern>

    </rollingPolicy>

    <layout class="ch.qos.logback.classic.PatternLayout">

      <Pattern>%d{yyyyMMdd-HH:mm:ss.SSSZ} [%thread] %-5level %logger.%method - %msg%n</Pattern>

      </layout>

   </appender>

  

   <appender name="FILE_SIZE_ROLL" class="ch.qos.logback.core.rolling.RollingFileAppender">

    <file>${log.dir}/${log.file}.log</file>

    <Append>true</Append>

    <Encoding>UTF-8</Encoding>

    <BufferedIO>false</BufferedIO>

    <BufferSize>8192</BufferSize>

    <ImmediateFlush>true</ImmediateFlush>

   

     <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">

      <FileNamePattern>

          ${log.dir}/bak/${log.file}-%i.log.zip

      </FileNamePattern>

       <MinIndex>0</MinIndex>

       <MaxIndex>9</MaxIndex>

     </rollingPolicy>

     <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">

      <MaxFileSize>50MB</MaxFileSize>

     </triggeringPolicy>

   

     <layout class="ch.qos.logback.classic.PatternLayout">

      <Pattern>%d{yyyyMMdd-HH:mm:ss.SSSZ} [%thread] %-5level %logger.%method - %msg%n</Pattern>

       </layout>

  </appender>

  <root>

    <level value="ALL" />

    <appender-ref ref="STDOUT" />

    <appender-ref ref="FILE_SIZE_ROLL" />

  </root>

 

  <logger name="com.inforeach.util.log.Slf4jLogger">

    <level value="DEBUG" />

  </logger>

 

  <logger name="org.logicalcobwebs.proxool">

    <level value="DEBUG" />

  </logger>

 

  <logger name="testlogger.LoggerMain">

    <level value="ALL" />

  </logger>

 

</configuration>

4. In Eclipse Run Configuration ->Arguments ->VM set

-Dlogback.file.name=Test

   5 Run the application it should out put the resut in the out folder mentioned at the top

Include the below jar files in eclipse project build path

logback-classic-0.9.8.jar   
logback-core-0.9.8.jar   
slf4j-api-1.4.3.jar   
jcl104-over-slf4j-1.4.3.jar  
logback-access-0.9.8.jar