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Where does the log file locate in a web application with log4j?

Answer 1

+1 A:

If you do specify a relative name, it is the working directory of your application server.

ftl 2009-08-25 06:14:42

How do I have to do to set it to somewhere inside my web application, given the fact that I don't know the path from my application server to my web application?Thanks again.

Winston Chen 2009-08-25 06:20:19

You can specify in Web.xml the path of the logs <init-param>  <param-name>log.path</param-name> <param-value>pwm\logs</param-value> </init-param>

GustlyWind 2009-08-25 06:38:23

Thanks. Does this mean that once I put the tags into web.xml and the properties file in src, the location will be myapp\logs\test.log?

Winston Chen 2009-08-26 11:36:09

Answer 2

+1 A:

You can specify this as a system property and get it Via System.getProperty()

what we do is define a property as logroot ie.; -Dlogroot="PATH_TO_LOGS_FOLDER"

EDIT: FWIW System.getProperty() checks for checkPropertyAccess as well as checkPermission in case of lack of permissions.

hope that helps

Narayan 2009-08-25 06:48:43

Thanks. I have two questions on this.1. Where should I define 'logroot="PATH_TO_LOGS_FOLDER"'? in log4j.properties? or do you have a reference link for this?2. is "PATH_TO_LOGS_FOLDER" a relative path to my webapp root?Thanks a lot.

Winston Chen 2009-08-27 02:42:23

If you are using IDE,typically it is set as a property in the Tomcat->optional vm arguements

Narayan 2009-08-27 06:59:04

reg 2) it can be absolute/relative path, FWIW, we use to set it as a directory in our workspace(MyEclispe IDE) thus we create a directory inside our web-app root called as logs, it goes there(-Dlogroot="c:/workspace/logs"), thus can access the logroot using the above method in the post

Narayan 2009-08-27 13:43:03

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Where does the log file locate in a web application with log4j?

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