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Configuring Log4j: log4j:WARN Please initialize the log4j system properly.

Posted on 2009-05-10
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Last Modified: 2012-05-06
Hi,

I am configuring Log4j for logging in my java application

I get an warning

log4j:WARN Please initialize the log4j system properly.

and my logs are not generated. My log4j exists at the URL passed

I have created URL with my method

public URL doConfiguration()
    {
        URL url = getClass().getResource("log4j.xml");
        System.out.println("URL is "+url);

        return url;
    }
   
Now when I run my program I get message


URL is file:/C:/Documents%20and%20Settings/user/My%20Documents/NetBeansProjects/Outlook/build/classes/outlook/log4j.xml
log4j:WARN Please initialize the log4j system properly.


Please help me in fixing my log4j conf

Please find my main class code snippet and log4j.xml in Code option below
Kind Regards
package outlook;
 
import com.moyosoft.connector.com.*;
import com.moyosoft.connector.exception.*;
import com.moyosoft.connector.ms.outlook.*;
import com.moyosoft.connector.ms.outlook.folder.*;
import com.moyosoft.samples.outlook.gui.*;
 
import com.comp.outlook.xmlLogic.*;
import com.comp.outlook.businessobjects.*;
import java.io.File;
import java.net.URL;
import org.apache.log4j.Logger;
import java.util.TimeZone;
import org.apache.log4j.PropertyConfigurator;
 
 
/**
 *
 * @author user
 */
public class Main {
 
    Logger mL = Logger.getLogger(Main.class);
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        
        TimeZone.setDefault(TimeZone.getTimeZone("Europe/London"));
        
        File f = new File("C:\\Documents and Settings\\user\\My Documents\\NetBeansProjects\\compNewsletterMailMerge\\src\\log4j.xml");
        System.out.println("File Exists: "+f.exists());
 
 
	Main mn = new Main();
        URL url = mn.doConfiguration();
        PropertyConfigurator.configure(url);
        
        FindNewMail fnewMails = new FindNewMail();
        fnewMails.findnewMails();
        
	}
 
    public URL doConfiguration()
    {
        URL url = getClass().getResource("log4j.xml");
        System.out.println("URL is "+url);
 
        return url;
    }
    
}
 
 
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
 
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
 
    <appender name="TEMP" class="org.apache.log4j.DailyRollingFileAppender">
           <param name="File" value="/NewsletterMailMergeLog.log"/>
           <param name="Append" value="true"/>           
           <param name="DatePattern" value="yyyy-MM-dd"/>
           <param name="Threshold" value="INFO"/>
           <layout class="org.apache.log4j.PatternLayout">
              <param name="ConversionPattern"
                     value="%d{yyyy-MM-dd HH:mm:ss,SSS} [%t] %-5p %c %x - %m%n"/>
	   </layout>
	</appender>
 
 
 <!--   <appender name="ErrorLog" class="org.apache.log4j.RollingFileAppender">
           <param name="File" value="/ErrorLog.log"/>
           <param name="Append" value="true"/>
           <param name="MaxFileSize" value="20MB"/> 
           <param name="MaxBackupIndex" value="10"/>
           <param name="Threshold" value="ERROR"/>
           <layout class="org.apache.log4j.PatternLayout">
              <param name="ConversionPattern"
                     value="%d{yyyy-MM-dd HH:mm:ss,SSS} [%t] %-5p %c %x - %m%n"/>
	   </layout>
	</appender>
-->
    <appender name="ErrorLog" class="org.apache.log4j.DailyRollingFileAppender">
           <param name="File" value="/NewsletterMailMergeErrorLog.log"/>
           <param name="Append" value="true"/>
           <param name="DatePattern" value="yyyy-MM-dd"/>
           <param name="Threshold" value="ERROR"/>
           <layout class="org.apache.log4j.PatternLayout">
              <param name="ConversionPattern"
                     value="%d{yyyy-MM-dd HH:mm:ss,SSS} [%t] %-5p %c %x - %m%n"/>
	   </layout>
	</appender>
 
<!-- 220.227.6.10 -->
 <appender name="mail" class="org.apache.log4j.net.SMTPAppender">
  <param name="SMTPHost" value="PBI-NAMSG-04.MGDPBI.global.pvt" />
  <param name="From" value="user@pb.com" />
  <param name="To" value="user@pb.com" />
  <param name="Subject" value="[LOG] Test" />
  <param name="BufferSize" value="1" />
  <param name="threshold" value="ERROR" />
  <layout class="org.apache.log4j.PatternLayout">
   <param name="ConversionPattern"
    value="%d{ABSOLUTE} %5p %c{1}:%L - %m%n" />
  </layout>
 </appender>
 
 
    <appender name="TraceLog" class="org.apache.log4j.DailyRollingFileAppender">
           <param name="File" value="/NewsletterMailMergeTraceLog.log"/>
           <param name="Append" value="true"/>
           <param name="DatePattern" value="yyyy-MM-dd"/>
           <param name="Threshold" value="TRACE"/>
           <layout class="org.apache.log4j.PatternLayout">
              <param name="ConversionPattern"
                     value="%d{yyyy-MM-dd HH:mm:ss,SSS} [%t] %-5p %c %x - %m%n"/>
	   </layout>
	</appender>
 
<!--
 
<logger name="mccprocesswatcher.Main" additivity="true">
  <level value="Info"/>
  <appender-ref ref="TEMP" />
</logger>
 
<logger name="mccprocesswatcher.Main" additivity="true">
  <level value="Info"/>
  <appender-ref ref="TEMP" />
</logger>
 
<logger name="outlook.Main" additivity="true">
  <level value="Info"/>
  <appender-ref ref="TEMP" />
</logger>
 
<logger name="mccprocesswatcher.Main" additivity="true">
  <level value="Warn"/>
  <appender-ref ref="ErrorLog" />
</logger>
-->
<logger name="compnewslettermailmerge" additivity="true">
  <appender-ref ref="TraceLog" />
  <appender-ref ref="TEMP" />  
  <!--<appender-ref ref="mail" /> -->
</logger>
 
<logger name="com.comp" additivity="true">
  <appender-ref ref="TraceLog" />
  <appender-ref ref="TEMP" />
  <appender-ref ref="ErrorLog" />
</logger>
 
 
    <root>
        <priority value="TRACE" />
   
    </root>
 
 
</log4j:configuration>

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Question by:tia_kamakshi
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CEHJ earned 500 total points
ID: 24347910
Put log4j.xml at the root of the app and it should be loaded automatically
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LVL 86

Expert Comment

by:CEHJ
ID: 24347916
IOW you shouldn't need to use a Configurator. In any case, you should be using DOMConfigurator with log4j.xml if for some reason you need to do explicit config
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Author Comment

by:tia_kamakshi
ID: 24348006
Many Thanks it works when I have kept my log4j.xml at the root folder

How can I rename log4j.xml file

May be I can do this using DOMConfigurator

When I am using

File f = new File("C:\\SMEC\\Conf\\log4j.xml");
System.out.println("Conf File Exists: "+f.exists());

URL url = getClass().getResource("C:\\SMEC\\Conf\\log4j.xml");
System.out.println("URL is "+url);

URL url = mn.doConfiguration();
DOMConfigurator.configure(url);

I get ERROR

File Exists: true
Conf File Exists: true
URL is null
Exception in thread "main" java.lang.NullPointerException
        at org.apache.log4j.xml.DOMConfigurator$2.toString(DOMConfigurator.java:693)
        at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:793)
        at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:696)
        at org.apache.log4j.xml.DOMConfigurator.configure(DOMConfigurator.java:821)
        at outlook.Main.main(Main.java:51)
Java Result: 1


Why I am getting URL null.

I wanted to rename the log4j.xml file

As I may have to change the location of log4j.xml in near future and I have multiple java applications running on same server.

May be I am thinking when I set the classpath for all applications then my application should not confuse which log4j.xml file to use

Thanks and regards
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LVL 86

Expert Comment

by:CEHJ
ID: 24348021
>>I wanted to rename the log4j.xml file

No need to do that. Just keep it in the root of each app and you'll be fine, even with multiple apps, as long as you don't configure overlapping classpaths
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Author Closing Comment

by:tia_kamakshi
ID: 31579900
Many Thanks
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Expert Comment

by:CEHJ
ID: 24348510
:-)
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