log to a file hosted on tomcat

Question

I want to log my application output to a file hosted on my tomcat server. log4j.properties set is:

log4j.rootLogger=INFO, stdout, R

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%n

log4j.appender.R.MaxFileSize=1000KB
log4j.appender.R.MaxBackupIndex=5
log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=${catalina.home}/logs/initiate.log
log4j.appender.stdout=org.apache.log4j.FileAppender
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%d %p [%c] - %m%n

It does create initiate.log file but my log statements are not added to it. What is the issue? Or how will I set the properties using java Logger to output to fil

Can't be. As its my desktop and I am admin

Jatin
– Jatin

2013-02-02 10:43:58 +00:00
Commented Feb 2, 2013 at 10:43 — Jatin
– Jatin, Commented Feb 2, 2013 at 10:43
Why you define the appender "log4j.appender.stdout" twice?

Jintian DENG
– Jintian DENG

2013-02-03 05:34:47 +00:00
Commented Feb 3, 2013 at 5:34 — Jintian DENG
– Jintian DENG, Commented Feb 3, 2013 at 5:34
Are you setting ${catalina.home} in your jvm arguments ?

Sam
– Sam

2013-02-06 12:02:06 +00:00
Commented Feb 6, 2013 at 12:02 — Sam
– Sam, Commented Feb 6, 2013 at 12:02

maimoona · Accepted Answer · 2013-02-11 05:01:25Z

1

You need to define a way to access file logger somewhere in your java code

import org.apache.log4j.Logger;

private static Logger logger= Logger.getLogger("R");//fileLoggerName: R in this case

and then access the file like below

logger.error("Whatever message is!!"); 
//OR 
logger.info("message to write", exceptionObjectForCompleteTrace);

edited Feb 11, 2013 at 5:01

answered Feb 4, 2013 at 10:33

maimoona

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