<span style="font-size:12px;"><?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd"> 
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/" debug="false"> 
  <appender name="FILE" class="org.jboss.logging.appender.DailyRollingFileAppender"> 
    <errorHandler class="org.jboss.logging.util.OnlyOnceErrorHandler" /> 
    <param name="File" value="${jboss.server.log.dir}/server.log" /> 
    <param name="Append" value="true" /> 
    <!-- Rollover at midnight each day --> 
    <param name="DatePattern" value="'.'yyyy-MM-dd" /> 
    <!-- Rollover at the top of each hour 
    <param name="DatePattern" value="'.'yyyy-MM-dd-HH"/> 
    --> 
    <layout class="org.apache.log4j.PatternLayout"> 
      <!-- The default pattern: Date Priority [Category] Message\n --> 
      <param name="ConversionPattern" value="%d %-5p [%c] %m%n" /> 
      <!-- The full pattern: Date MS Priority [Category] (Thread:NDC) Message\n 
      <param name="ConversionPattern" value="%d %-5r %-5p [%c] (%t:%x) %m%n"/> 
      --> 
    </layout> 
  </appender> 
  <appender name="ErrorFile" class="org.jboss.logging.appender.DailyRollingFileAppender"> 
    <errorHandler class="org.jboss.logging.util.OnlyOnceErrorHandler" /> 
    <param name="File" value="${jboss.server.log.dir}/error.log" /> 
    <param name="Threshold" value="ERROR" /> 
    <param name="Append" value="true" /> 
    <!-- Rollover at midnight each day --> 
    <param name="DatePattern" value="'.'yyyy-MM-dd" /> 
    <layout class="org.apache.log4j.PatternLayout"> 
      <!-- The default pattern: Date Priority [Category] Message\n --> 
      <param name="ConversionPattern" value="%d %-5p [%c] %m%n" /> 
      <!-- The full pattern: Date MS Priority [Category] (Thread:NDC) Message\n 
      <param name="ConversionPattern" value="%d %-5r %-5p [%c] (%t:%x) %m%n"/> 
      --> 
    </layout> 
  </appender> 
  <appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender"> 
    <errorHandler class="org.jboss.logging.util.OnlyOnceErrorHandler" /> 
    <param name="Target" value="System.out" /> 
    <param name="Threshold" value="INFO" /> 
    <layout class="org.apache.log4j.PatternLayout"> 
      <!-- The default pattern: Date Priority [Category] Message\n --> 
      <param name="ConversionPattern" value="%d{ABSOLUTE} %-5p [%c{1}] %m%n" /> 
    </layout> 
  </appender> 
  <!-- ================ --> 
  <!-- Limit categories --> 
  <!-- ================ --> 
  <category name="org.hibernate"> 
    <priority value="WARN" /> 
  </category> 
  <category name="org.hibernate.engine.loading.LoadContexts"> 
    <priority value="ERROR" /> 
  </category> 
  <category name="org.jboss"> 
    <priority value="INFO" /> 
  </category> 
  <!-- Limit the org.apache category to INFO as its DEBUG is verbose --> 
  <category name="org.apache"> 
    <priority value="WARN" /> 
  </category> 
  <!-- Limit the jacorb category to WARN as its INFO is verbose --> 
  <category name="jacorb"> 
    <priority value="WARN" /> 
  </category> 
  <!-- Limit the org.jgroups category to WARN as its INFO is verbose --> 
  <category name="org.jgroups"> 
    <priority value="WARN" /> 
  </category> 
  <!-- Limit the org.quartz category to INFO as its DEBUG is verbose --> 
  <category name="org.quartz"> 
    <priority value="INFO" /> 
  </category> 
  <!-- Limit the JSR77 categories --> 
  <category name="org.jboss.management"> 
    <priority value="INFO" /> 
  </category> 
  <!-- Limit the org.jboss.serial (jboss-serialization) to INFO as its DEBUG is verbose --> 
  <category name="org.jboss.serial"> 
    <priority value="INFO" /> 
  </category> 
  <category name="com.liang"> 
    <priority value="DEBUG" /> 
  </category> 
  <!-- ======================= --> 
  <!-- Setup the Root category --> 
  <!-- ======================= --> 
  <root> 
    <appender-ref ref="CONSOLE" /> 
    <appender-ref ref="FILE" /> 
    <appender-ref ref="ErrorFile" /> 
  </root> 
</log4j:configuration></span> 

<category name="com.liang">
  <priority value="DEBUG" />
  <appender-ref ref='FILE'/>
</category>