Log4j : logging one package to log file and another package to another logfile ... on different levels.

Sending the only com.dashboard.process [debug] information to a file.... AND

Sending the info messages of com.dashboard [info] information to another file including the info

messages of com.dashboard.process.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration PUBLIC "-//LOGGER" "http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/xml/doc-files/log4j.dtd">
<log4j:configuration>
 <!-- an appender is an output destination, such as the console or a file; names of appenders are arbitrarily chosen -->
 <appender name="stdout" class="org.apache.log4j.ConsoleAppender">
  <layout class="org.apache.log4j.EnhancedPatternLayout">
   <param name="ConversionPattern" value="%d %-5p %c{1} (%F:%L) %m%n" />

  </layout>
 </appender>
 <appender name="stderr" class="org.apache.log4j.ConsoleAppender">
  <param name="target" value="System.err" />
  <layout class="org.apache.log4j.PatternLayout">
   <param name="ConversionPattern" value="%-5p %d [%t][%F:%L] : %m%n" />
  </layout>
 </appender>
 <appender name="file" class="org.apache.log4j.RollingFileAppender">
  <param name="File" value="${log4j.dir}/dashboard.log" />
  <param name="MaxFileSize" value="2Mb" />
  <param name="MaxBackupIndex" value="5" />
  <layout class="org.apache.log4j.PatternLayout">
   <param name="ConversionPattern" value="%-5p %d [%t][%F:%L] : %m%n" />
  </layout>
 </appender>
 <appender name="harvestor" class="org.apache.log4j.RollingFileAppender">
  <param name="File" value="${log4j.dir}/dashboard-harvest.log" />
  <param name="MaxFileSize" value="2Mb" />
  <param name="MaxBackupIndex" value="5" />
  <layout class="org.apache.log4j.PatternLayout">
   <param name="ConversionPattern" value="%-5p %d [%t][%F:%L] : %m%n" />
  </layout>
 </appender>

 <category name="org.springframework.ui.velocity">
  <priority value="WARN" />
 </category>
 <category name="org.springframework.web.servlet.view.velocity">
  <priority value="WARN" />
 </category>
 <category name="org.apache.velocity.runtime">
  <priority value="WARN" />
 </category>
 <category name="org.springframework.web.util" additivity="false">
  <priority value="WARN" />
 </category>
 <category name="org.eclipse.jetty.servlet">
  <priority value="WARN" />
 </category>
 <category name="com.dashboard.process" additivity="false">
  <priority value="DEBUG"></priority>
 </category>
 <category name="com.dashboard" additivity="true">
  <priority value="INFO"></priority>
 </category>

 <!-- the root category -->
 <!-- all log messages of level "debug" or higher will be logged, unless defined otherwise all log messages will be logged to the appender 
  "stdout", unless defined otherwise -->
  
  <logger name="com.dashboard">
    <level value="INFO" />
    <appender-ref ref="file" />
  </logger>

 <logger name="com.dashboard.process" additivity="false">
  <level value="DEBUG" />
  <appender-ref ref="harvestor" />
 </logger>


</log4j:configuration>