Re: [logback-user] How to reference file one level above the web context

9 Nov 2010


      Thanks for the advice.  In the end, I loaded the logback config file 
myself programmatically which allowed me to store and retrieve it from 
where I wanted.

LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();
         try {
           JoranConfigurator configurator = new JoranConfigurator();
           configurator.setContext(lc);
           // the context was probably already configured by default 
configuration rules
           lc.reset();
           configurator.doConfigure(realPath + "/" + 
this.getInitParameter("logback_filename"));
         } catch (JoranException je) {
           // StatusPrinter will handle this
         }


On 09/11/2010 4:45 AM, Thorbjørn Ravn Andersen wrote:
...
There is no guarantee where the current working directory is set for a web
application (which is what a relative path works from).
You can, however, ask the JVM where it got the byte code from for a given
class, by using  http://www.exampledepot.com/egs/java.lang/ClassOrigin.html
// Get the location of this class
   Class cls = this.getClass();
  ProtectionDomain pDomain = cls.getProtectionDomain();
   CodeSource cSource = pDomain.getCodeSource();
   URL loc = cSource.getLocation();  // file:/c:/almanac14/examples/
(works for jar files too).
You can then make the information available to logback and refer to
${myvariable}/logback.properties.
/Thorbjørn
-----Original Message-----
From: logback-user-bounces@qos.ch [mailto:logback-user-bounces@qos.ch] On
Behalf Of Dawson Mossman
Sent: 8. november 2010 15:37
To: Logback-user@qos.ch
Subject: Re: [logback-user] How to reference file one level above the web
context
Has anyone had to do this type of thing before?  If I cannot use a
relative path, are there recommendations for an alternative approach?
On 05/11/2010 5:24 PM, Dawson Mossman wrote:
...
I am trying to use the<property file="logback.properties" />  tag in
my logback.xml file to reference an external settings file.  I want to
use a relative path and specify the file one level above my
application context. For example:
<web server root>/apps/myapplication/web-inf/classes/logback.xml
I want to put the logback.properties file at<web server root>/apps/.
Do you know what relative path I need to use to do this?
I've tried everything I can think of, including the following, but
they did not work:
<property file="../logback.properties" />
<property file="../../../logback.properties" />
<property file="/logback.properties" />
<property file="./logback.properties" />
Please help ... there has to be a way without using an absolute path!
Dawson

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