log4j relative path to create log file

Question

Here is my log4j.properties file

# Define the root logger with appender file
log = D:/workspaces/Abhishek/Automation/MOPS/logs
log4j.rootLogger = DEBUG, FILE

# Define the file appender
log4j.appender.FILE=org.apache.log4j.DailyRollingFileAppender
log4j.appender.FILE.File=${log}/log.out

# Define the layout for file appender
log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE.layout.conversionPattern=%d{ABSOLUTE} %5p  - %m%n

This does job for me only problem is the absolute path i have used. I want to use relative path now.

Below is my folder structure

--src
      --com
      --log4j.properties
--logs
     --log.out file

So my logs folder is outside the src folder where log4j.properties is situated?

How can i define relative path in such case. In case of jsp's we do it like ../webpages/page.jsp. How can it be achieved here ??

Did you find a solution for this? I also have the same scenario (logs folder outside src). — k_rollo
– k_rollo, Commented Sep 20, 2015 at 3:46

pappu_kutty · Accepted Answer · 2013-10-17 07:20:21Z

3

you can pass dynamic value like this

{logfileLoc}/logs/file.log.

in your case you want in the project folder itself so can have -D (java argument or equivalent) param like -D logfileLoc =D:/workspaces/Abhishek , and you can access with variable logfileLoc. and consider changing this value for different environments.

answered Oct 17, 2013 at 7:20

pappu_kutty

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1 Comment

Anu Over a year ago

doesnt this work in xml config file? its creating a new folder {logfileLoc} instead ..

Piaget Hadzizi · Accepted Answer · 2020-01-24 09:48:14Z

2

I had the same problem and I simply changed the following line

log4j.appender.file.File=logs\\myLogFile.log

And it worked fine relative to the current working directory

answered Jan 24, 2020 at 9:48

Piaget Hadzizi

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Comments

Khomyakov Ilya · Accepted Answer · 2021-12-27 15:16:54Z

0

On Linux with Tomcat and webapps this works:

log4j.appender.file.File=./logs/your.log

It's in /your/tomcat/webapps/your_app.war/WEB-INF/classes/log4j.properties

And it puts the log file in /your/tomcat/logs/ folder.

P.S. As I found out recently, it's not a good idea to use relative paths in this case. Because you can run the tomcat from different folders, not just tomcat_home/bin/ So, the best answer is by Piaget Hadzizi

edited Dec 27, 2021 at 15:16

answered Nov 12, 2021 at 10:55

Khomyakov Ilya

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