FW: log4j property configuration problem

[Barr, Jud]

Mark

I never had much luck passing a file name to the PropertyConfigurator.configure() 
method from a servlet.  I use the version of configure() that takes a Properties 
object as a parameter.  That way I have control over the location of the configuration 
file.  

In the code below you'll see that I use getClass().getResourceAsStream() to load my 
configuration file.  This allows me to put the file in a directory that is in the 
classpath.  Then I use the inputStream returned to load a Properties object.

Hope this helps.

Jud Barr
Principal Financial Group
Des Moines, Iowa

[EMAIL PROTECTED]



// note the use of "/" in front of the file name.  See the API for 
// getResourceAsStream() for details

private String log4JConfigFile = "/Log4JWebLog.properties";

public void configureLog4J() {

    try {
          //  Using getResourceAsStream and loading a properties object gives us
        // more control over the location of the configuration file.
        InputStream is = getClass().getResourceAsStream(log4JConfigFile);
        theProperties = new Properties();
        theProperties.load(is);
        PropertyConfigurator.configure(theProperties);
        is.close();
    } catch (Exception e) {
        // This is the only location we use Standard Out.  This is because
        // we could not configure Log4J so it's not available for logging the message.
        System.out.println("Could not configure logging. " + e);
    }
}

-----Original Message-----
From: Mark Gordon [mailto:[EMAIL PROTECTED]]
Sent: Friday, December 07, 2001 8:54 AM
To: '[EMAIL PROTECTED]'
Subject: FW: log4j property configuration problem


Hi All

I'm posting this message again, as I didn't get a response. 

Any help from the experts out there greatly appreciated.

Thanks

Mark Gordon

-----Original Message-----
From: Mark Gordon 
Sent: 21 November 2001 10:51
To: '[EMAIL PROTECTED]'
Subject: log4j property configuration problem


Hi All

Tried using the instructions from the Log4j manual on using a servlet for
log4j initialisation. Below is code from the example:

public void init() { 
        String prefix = getServletContext().getRealPath("/"); 
        String file = getInitParameter("log4j-init-file"); 
        // if the log4j-init-file is not set, then no point in trying 
        if(file != null) { 
                PropertyConfigurator.configure(prefix+file); 
        } 
}

However getRealPath() doesn't work from within a WAR file. Any suggestions.
I don't want it to be an expanded WAR file, also the solution, if possible,
must be web container independent.

Thanks

Mark 




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