Re: Enable/Disable logging programatically.

"Albin Joseph" <[email protected]> writes:

> hi experts
>
> I want to configure Log4J or J2SE 1.4 logging programmatically. I
> don't want to use any configuration files for configuring Log4J /J2SE
> 1.4 logging . I want to enable/disable logging facility at runtime
> from my program. Sometime I may require to turn on only DEBUG,
> sometimes DEBUG and INFO may be required. How can I do that? Please
> help me. Any help would be much valuable. 

Simply get a handle to the Logger and change it with logging API
method calls.

There is a big catch - normally you define Loggers statically, per
class. Something like this:

  public class ServletDooDah extends ....
  {
    final static Logger LOGGER = Logger....;

But if you're trying to alter them on the fly in your code that will
clearly not be thread safe.

So you're best bet is to create a per-request logger based on the
class logger and then alter that from your servlet.


-- 
Nic Ferrier
http://www.tapsellferrier.co.uk   for all your tapsell ferrier needs


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