exception stack trace not going to log file

[Santosh Ramachandrula]

Folks,
I am using log4j in my application and I am trying to send all the exception stack traces to a log file. I have set the logger priority to ERROR in log4j.properties

log4j.rootCategory=ERROR, consolePrinter, ROOT

In the my java class I am using the following statement to write the stack trace to the log file but it does'nt work.
try{
//code here
}catch(Exception ex){
logger.error( "Class.Exception",e);
}


Any suggestions/ideas? Thanks for the help in advance guys...

[Alexandru Popescu]

Pls paste here more of your log4j.properties file. Have you configured the consolePrinter and ROOT appenders? What priorities?

--
./pope
[the_mindstorm]

[Santosh Ramachandrula]

Ali Pope,
Thanks for the reply and here are the contents of log4j.properties file

############### Following are my settings ############
#Default log level to ERROR. Other levels are INFO and DEBUG.
#log4j.rootLogger=DEBUG, ROOT
#log4j.rootCategory=DEBUG, consolePrinter, ROOT
log4j.rootCategory=ERROR, consolePrinter, ROOT

#### This appender writes to console ##############
log4j.appender.consolePrinter=org.apache.log4j.ConsoleAppender
log4j.appender.consolePrinter.layout=org.apache.log4j.PatternLayout

# Pattern to output the caller's file name and line number.
log4j.appender.consolePrinter.layout.ConversionPattern=%n%m%n

#### End of appender writing to console ##############


log4j.appender.ROOT=org.apache.log4j.RollingFileAppender
#log4j.appender.ROOT=org.apache.log4j.ConsoleAppender
log4j.appender.ROOT.File=c:/temp/tcc.log
log4j.appender.ROOT.MaxFileSize=1000KB
#Keep 5 old files around.
log4j.appender.ROOT.MaxBackupIndex=5
log4j.appender.ROOT.layout=org.apache.log4j.PatternLayout
#Format almost same as WebSphere's common log format.
log4j.appender.ROOT.layout.ConversionPattern=[%d] %t %c %-5p - %m%n

#Optionally override log level of individual packages or classes
log4j.logger.com.webage.ejbs=INFO

[Alexandru Popescu]

Santosh, unfortunatelly everything seems oke with me :-(. Just one more thing: are you sure it is in your classpath?

--
./pope
[the_mindstorm]

[Santosh Ramachandrula]

Yes it is in classpath, I can get the message with ERROR priority like log.error("some message"); to the log file but for some reason(s) I am not able to send the stack trace message to the log file if an exception occurs.
I am using log.error("XXXException", ex); to send the stack trace to the log file.

[Siripa Siangklom]

Try to change ERROR to be DEBUG priority, does it write exception stacktrace?

[Santosh Ramachandrula]

Siripa,
Thanks for the response. I tried DEBUG and ERROR priorities. They both work for normal messages but not for stack trace.

[Carol Enderlin]

Did you try turning on log4j debug?

log4j.debug=true in config file or -Dlog4j.debug on the command line.

What version of log4j are you using? If you're using the 1.3 alpha version that could be the problem.

[Santosh Ramachandrula]

I have log4j.debug = true, but it did not help me.

[Carol Enderlin]

OK, what version of log4j are you using?

[emm raha]

You're catching 'ex' and sending 'e' to your logger. I tried your log4j.properties with this, and it works fine:

  
package dummy;
 
import org.apache.log4j.Logger;
 
public class UsesLog4J {
private static Logger logger = Logger.getLogger(UsesLog4J.class);

public static void main(String[] args) {
String[] sArray = new String[2];

try {
sArray[3] = "should throw exception"; 
throw new Exception("Catch me if you can.");
} catch(Exception ex) {
logger.error( "Class.Exception", ex);
}
}
}