[logback-user] Questions about SLF4JBridgeHandler

cowwoc cowwoc at bbs.darktech.org
Mon Jan 30 22:44:20 CET 2012


Hi,

I've got three questions:

1. http://www.slf4j.org/legacy.html mentions LevelChangePropagator but
http://www.slf4j.org/api/org/slf4j/bridge/SLF4JBridgeHandler.html does not.
Is it possible to add this to the Javadoc?

2. Why doesn't SLF4JBridgeHandler.install() register the listener
automatically?

3. I've noticed that invoking SLF4JBridgeHandler.install() is not enough.
You must remove any existing JUL handlers using:

java.util.logging.Logger rootLogger =
      java.util.logging.LogManager.getLogManager().getLogger("");
    java.util.logging.Handler[] handlers = rootLogger.getHandlers();
    for (int i = 0; i < handlers.length; i++) {
      rootLogger.removeHandler(handlers[i]);
    }

before invoking SLF4JBridgeHandler.install(). Shouldn't SLF4JBridgeHandler
offer a method for doing it on behalf of the user?

Thanks,
Gili
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