Hi,
You mean like
% Logger logger = Logger.getLogger(getClass().getName());
logger.warn(oh no!);
%
Or via tags and such, e.g.
http://jakarta.apache.org/taglibs/doc/log-doc/intro.html?
Yoav Shapira http://www.yoavshapira.com
-Original Message-
From: Norma Spence [mailto:[EMAIL
Hi,
You probably want to set additivity=false on these, so that the all
doesn't trump the error and they're kept separate, each at its own
level.
Yoav Shapira http://www.yoavshapira.com
-Original Message-
From: Oliver Epper [mailto:[EMAIL PROTECTED]
Sent: Tuesday, November 30, 2004
Hi,
Yeah, I thought you didn't want A to log A.B's error messages...
Yoav Shapira http://www.yoavshapira.com
-Original Message-
From: Oliver Epper [mailto:[EMAIL PROTECTED]
Sent: Tuesday, November 30, 2004 10:03 AM
To: Log4J Users List; Patrick Kranz
Subject: Re: level inheritance,
Hi,
There's no IMAP appender built into the log4j core that I'm aware of.
You can write one ;)
You can define an ErrorHandler for an Appender. It would be called if
the Appender fails. See the org.apache.log4j.ErrorHandler JavaDoc for
more details.
Yoav Shapira http://www.yoavshapira.com
Hi,
Ok I know there is no way with SMMTP to guarantee that there was an
e-mail
sent... But with this error handler I will be able at least to detect
whther
at least the SMTP server was down?
You would know that an SMTP error occurred. You wouldn't know
specifically its cause, such as SMTP
a network
drop
etc...
From: Shapira, Yoav [EMAIL PROTECTED]
Reply-To: Log4J Users List [EMAIL PROTECTED]
To: Log4J Users List [EMAIL PROTECTED]
Subject: RE: IMAP appender?
Date: Mon, 29 Nov 2004 10:32:41 -0500
Hi,
Ok I know there is no way with SMMTP to guarantee that there was an
e-mail
sent
Hi,
Added to Other Ports section, updated site. Thank you for notifying
us, and keep up this interesting work.
Yoav Shapira http://www.yoavshapira.com
-Original Message-
From: Kris Bell [mailto:[EMAIL PROTECTED]
Sent: Sunday, November 28, 2004 8:23 PM
To: [EMAIL PROTECTED]
Subject:
Hi,
You need to it over a SSH connection: use PuTTY or a similar client as
instructed at http://www.apache.org/dev. The CVS server is working
fine, I'm using it right now.
Yoav Shapira http://www.yoavshapira.com
-Original Message-
From: Alan Brown [mailto:[EMAIL PROTECTED]
Sent:
Hi,
Yes, search the list archives for more.
Yoav Shapira http://www.yoavshapira.com
-Original Message-
From: Zhu Qifei [mailto:[EMAIL PROTECTED]
Sent: Tuesday, November 16, 2004 2:14 AM
To: Log4J Users List
Subject: two log4j repository?
Hi all,
Can i have two separate log4j
Hi,
Setting the override property would likely help when running
standalone,
but we
don't have a problem them. I don't think it will help when running
under
JBoss
because because then JBoss would not initialize log4j at all, right?
Wrong. This would be useful in ruling out the default
Hi,
Given the fact autoconfiguration runs in a static initializer, it only seems
possible to circumvent with a custom classloader. It's a lot less effort to
simply not have log4j.properties/log4j.xml on the classpath than it is to start
mucking with custom loaders for this purpose.
So no, I
Hi,
Would a system property be useful here?
A lightbulb went on when I read that, followed by a smack to the side of
my head: there's already one!
Setting the system property log4j.defaultInitOverride overrides the
default init procedure. This is documented in the short manual. OP:
give it a
Hi,
It is a mistake to perceive these as official distributions and rely on
them as such. They're there for developer convenience purposes only,
may contain bugs, are not related to a CVS tag (in most cases, which
means they can't be reproduced), and are not supported in any way.
Other than
Hi,
You can use PREALPHA_1_3_AS_OF_2004_05_12 most likely, or simply the
v1_2-branch tag.
Yoav Shapira http://www.yoavshapira.com
-Original Message-
From: Doug Clifton [mailto:[EMAIL PROTECTED]
Sent: Friday, October 15, 2004 3:01 PM
To: Log4J Users List
Subject: CVS revision Tag
Hi,
First, please be more specific than just the configuration gets messed up. Our
ability to help you is mostly limited by the quality and quantity of the information
you provide.
The common problem when developing libraries is the need to allow the user of the
library to configure its
Hi,
I always use
private static final Logger LOGGER = Logger.getLogger(Foo.class);
I use static final instead of final static because the former is the JLS
recommended order, and tools like Checkstyle complain if you don't
comply, but the functionality is the same obviously.
I use private
Hi,
You can modify the levels for loggers and the thresholds for appenders on the fly, no
problem.
Yoav Shapira
Millennium Research Informatics
-Original Message-
From: Ionel GARDAIS [mailto:[EMAIL PROTECTED]
Sent: Friday, October 01, 2004 11:13 AM
To: [EMAIL PROTECTED]
Subject:
Hi,
Yup, use the Ant-like syntax ${java.io.tmp} (I actually think you mean
java.io.tmpdir by the way).
Yoav Shapira
Millennium Research Informatics
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Tuesday, September 28, 2004 12:00 PM
To: [EMAIL PROTECTED]
Hi,
You can go about this several ways. Here's one option, in a properties
configuration format.
# Define log file (appender) for processing actions
log4j.appender.processingActionsAppender = org.apache.log4j.FileAppender
...
# Define log file (appender) for database actions
Hi,
How are you configuring log4j? Using BasicConfigurator.configure adds a
console appender.
Yoav Shapira
Millennium Research Informatics
-Original Message-
From: Greg Michalopoulos [mailto:[EMAIL PROTECTED]
Sent: Friday, September 24, 2004 9:36 AM
To: 'Log4J Users List'
Subject:
Hi,
You don't have to attach appenders to the root logger. Attach the context1 appender
only to the context1 logger, attach the context2 appender only to the context2 logger,
and attach the Tomcat appender only to the org.apache.catalina logger.
Yoav Shapira
Millennium Research Informatics
Hi,
Aaah, good findings! Maybe this will let us make progress on
http://issues.apache.org/bugzilla/show_bug.cgi?id=26372 and
http://issues.apache.org/bugzilla/show_bug.cgi?id=27371.
Thanks for posting!
Yoav Shapira
Millennium Research Informatics
-Original Message-
From: Paulsen, Jay
Hi,
I can't help with your actual problem, as I don't know its cause, but I
wanted to offer an alternative approach that involves much less work for
you.
Use an Admin Logger as a separate Logger, rather than a separate level.
Have a Singleton in your webapp which has
private static final Logger
Hi,
Would definitely add logging to the tags themselves, that's almost a
no-brainer. What do you lose by doing that? Nothing, I think.
As to whether you want to add logging to the JSPs themselves: it does
clutter them and make them have more Java, thereby reducing the EUD
potential. However,
Hi,
Or if not as part of log4j proper, then at least have a link to them on the
logging.apache.org/log4j web site. I'll take a look at adding something.
Yoav Shapira
Millennium Research Informatics
-Original Message-
From: Ceki Gülcü [mailto:[EMAIL PROTECTED]
Sent: Thursday,
Hi,
If you're talking about the RequestDispatcher#forward method, the
Servlet Spec guarantees that it will execute on the same thread as the
original request (Servlet Spec v2.4, section SRV.8.2, it's unambiguous),
so that's what you're missing there.
For EJB calls, I don't know, you might be
Hi,
In your configuration file, define all six appenders. Call them
stdout1, stdout2, email1, email2, file1, file2. The syntax for this is
in the JavaDoc for the PropertyConfigurator class, as well as the Short
and Complete log4j manuals. Set additivity to false for all six
appenders.
Maybe
!
--
Sloan
-Original Message-
From: Shapira, Yoav [mailto:[EMAIL PROTECTED]
Sent: Friday, September 03, 2004 8:54 AM
To: Log4J Users List
Subject: RE: New logging method
Hi,
You could use a normal JDBCLogger, pass it a Map (or other Collection
of
your choice) that contains the subject
-Original Message-
From: Shapira, Yoav
Sent: Friday, September 03, 2004 9:07 AM
To: Log4J Users List
Subject: RE: New logging method
Hi,
You specify the ObjectRenderer in the configuration file, as
log4j.renderer.fully.qualified.name.of.rendered.class=fully.qualified.n
Hi,
You need to login (to wiki) in order to edit these pages. They're
immutable to anonymous users.
Yoav Shapira
Millennium Research Informatics
-Original Message-
From: Jim Moore [mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 31, 2004 8:56 AM
To: Log4J Users List
Subject:
Hola,
I bet your hunch is correct. You'd need to either ask the weblogic
folks how to isolate the startup classloader from the EAR classloaders,
or alternatively use explicit LoggerRepositories in your log4j
configuration within your EARs. Check our Jake Kjome's
JNDIRepositorySelector (or a
Hola,
That's a fine generic way. If you want to take advantage of log4j options,
you can create a WriterAppender that writes to the same PrintStream (ps) in Michal's
code below. Then your loggers can write to this appender and they don't need to know
of the fdout part.
If you're on unix,
Hi,
There is documentation on these configuration parameters. It's in the
Short Manual, the JavaDoc for the PropertyConfigurator class, the FAQ
(http://logging.apache.org/log4j/docs/faq.html), and Ceki's complete
log4j manual (a non-free book that's well worth the purchase according
to several
Hi,
I'm not that gung-ho about configuration-file-generation tools. We've
had some bitter experiences in the Tomcat area related to this. The
problem is that the code tends to develop faster than the
configuration-file-generation tool and so the configuration file
generator outputs either
the latest jar..
thanx for the info Yoav. But do u mean that i need to get the source
code
from http://logging.apache.org/log4j/ site? can u tell me the steps
involved
in downloading CVS head?
sorry but i m new to it. thanx for ur help.
-Original Message-
From: Shapira, Yoav [mailto:[EMAIL
Hi,
The other post had a couple of good ideas. The probability of us
including a provider-specific appender implementation is in the log4j
core is slim. In add-on/contrib modules, the probability is higher, but
you'd have to write it, submit it to us (with the appropriate copyright
transfer),
Hi,
And also don't use configureAndWatch, as that creates the monitoring
thread that's likely causing this exception.
Yoav Shapira
Millennium Research Informatics
-Original Message-
From: Shapira, Yoav
Sent: Thursday, August 05, 2004 8:34 AM
To: Log4J Users List
Subject: RE: log4j
Hi,
There's no such thing. There's 1.2.8 and HEAD, and they're different. You basically
can't compile 1.2.8 from CVS HEAD as there's too much 1.3 stuff there.
I see in your other message that you've managed to get CVS to work, so I'll provide
more details in response to that one.
Yoav
Hi,
This is a CVS question. I hope you have a good CVS GUI, but if not this
applies from the command line as well.
When you do a CVS checkout without specifying a branch or revision tag,
you get the HEAD copy which is the latest. For log4j this is the latest
1.3 alpha code. If you want 1.2.8,
Hi,
You can get nightlies for log4j from Gump:
http://brutus.apache.org/gump/public/logging-log4j/logging-log4j/index.html
http://brutus.apache.org/gump/public/logging-log4j-12/logging-log4j-12/index.html.
You can also download and build yourself.
Yoav Shapira
Millennium Research Informatics
Hi,
A couple of pointers:
log4j.appender.A1.File=/WEB-INF/log/ejcourse.log
Do you really have a /WEB-INF off your root directory? The above is an
absolute reference, not relative to anything, so it's probably wrong.
# A1 Categories
log4j.category.com.echows=INFO,ERROR,DEBUG
You only specify
documentation
associated with these features (especially logging domains) above and
beyond
the work plan list?
Mike
-Original Message-
From: Shapira, Yoav [mailto:[EMAIL PROTECTED]
Sent: Tuesday, July 27, 2004 1:25 PM
To: Log4J Users List
Subject: RE: Release date for log4j 1.3?
Hola,
If I had
Hola,
If I had $1 for every time we saw this question ;)
I think 12 weeks for 1.3alpha0 is sane ;)
Yoav Shapira
Millennium Research Informatics
-Original Message-
From: David J. M. Karlsen [mailto:[EMAIL PROTECTED]
Sent: Tuesday, July 27, 2004 1:09 PM
To: Log4J Users List
Subject:
substitute a dumb file logger for now when we're
running under J++, this has been deemed an acceptable work-around. So for
now we're OK.
If we get a better stack trace I'll follow up with the information.
Regards,
Mike
-Original Message-
From: Shapira, Yoav [mailto:[EMAIL PROTECTED]
Sent
Hi,
The Visual J++ JVM is 1.1-compatible supposedly, but it's different from
Sun's 1.1. Can you run OK on Sun 1.1? What's the full stack trace for
the NoClassDefFoundError?
Yoav Shapira
Millennium Research Informatics
-Original Message-
From: Lutz Michael [mailto:[EMAIL PROTECTED]
Hi,
We've done the servlet that reloads the log4j thing in the past: it works well, and
there's one for your use in the log4j-sandbox.
In the J2EE Spec world (which as others point out has serious limitations in this
area), the thread creation itself is just as much a problem as the lack of a
Hi,
Read the J2EE Specification guidelines on spawning user threads within a container to
understand why. configureAndWatch spawns a thread, albeit a daemon, to watch the file.
Yoav Shapira
Millennium Research Informatics
-Original Message-
From: Adrian Beech [mailto:[EMAIL
Hi,
Thanks alot for the information.
Can I have any number of log4j properties files under a single web
application ?
Yes. In case of conflicts the last one configured using
Configurator#configure (or a variant thereof) will determine the
configuration.
If so, where to put these
Hi,
The root category is not required in configuration files. It is
implicitly created for you whether you specify details for it or not.
Most people specify it in order to set the basic level of logging for
their system such that 3rd party libraries using log4j aren't logging at
too verbose a
Hi,
This question is routinely addressed on the tomcat-user mailing list:
you may wish to search that list's archives for the myriad approaches
and solutions that people have proposed over the years.
Common ones include:
- NOT to use a relative filename, as the definition of Current Working
Hi,
Take advantage of what's there. It's a simple rationale and I like it
;) If there's nothing there, no harm done. This is an excellent way
for someone who knows log4j but must debug an app to whose source code
there's no access to configure logging.
Yoav Shapira
Millennium Research
Hi,
Run it inside a profiler to see where CPU time is spent.
Yoav Shapira
Millennium Research Informatics
-Original Message-
From: Shriver, Derrick [mailto:[EMAIL PROTECTED]
Sent: Wednesday, May 19, 2004 4:09 PM
To: '[EMAIL PROTECTED]'
Subject: long initialization delay
I'm getting a
Hi,
b.t.w. The license link on http://logging.apache.org still refers to
the
1.1 license whereas the link at
http://logging.apache.org/site/binindex.cgi when I try to download
log4j
refers to 2.0 license.
El fixo has been completo. (Apologies to any Spanish speakers on the
list)
Yoav
This
Hi,
I've got a DailyRolloingFileAppender and I want to keep only the last 7
days. Is this possible?
If not, has anyone built a custom appender for that?
No to the first question in log4j 1.2, yes in log4j 1.3. Yes to the
second question, you can search the list archives for
Hi,
See http://marc.theaimsgroup.com/?l=log4j-userm=106201384129366w=2.
You may also wish to consider alternative approaches:
- An ant token replacement mechanism (filled in when you create the WAR
file or deploy your application)
- Programmatic configuration
- There are more but I have to run.
Hi,
I've added it. Before doing so I checked there's a reference to the Apache license.
But I don't read German, so it may be the reference is not highlighted enough. Thanks
for the translation,
Yoav Shapira
Millennium Research Informatics
-Original Message-
From: Ceki Gülcü
Hi,
I don't understand your comments. With the current defaults there are
no appenders, so *no* information is logged except a single console
I thought you meant the default configuration as in
BasicConfigurator.configure being called? Maybe I misunderstood your
original point.
least
Hi,
Why can't you simply use a static initializer in your EJB to configure
Log4J? I.e:
static {
PropertyConfigurator.configure(myfile.properties);
}
I'll answer for the original poster: for several reasons. What if a 3rd
party library (or another part of the code you simply
Hi,
I don't know, but it wouldn't be difficult to track with a profiler, and
then please post the results to the list as I'm sure others are curious
;)
Yoav Shapira
Millennium Research Informatics
-Original Message-
From: Ralf Beger [mailto:[EMAIL PROTECTED]
Sent: Wednesday, April 14,
it is working well for us so
far. I attached the current code but it is in a package from our code right now (easy
to change).
James Stauffer
(Thanks for the great product!)
-Original Message-
From: Shapira, Yoav [mailto:[EMAIL PROTECTED]
Sent: Thursday, April 15, 2004 7:55 AM
To: Log4J
Hi,
How do I configure log4j to use Configurator#configureAndWatch. My
Instead of relying on default initialization, you write code that
configures log4j: follow the tutorial, search this list's archives, look
up examples online, or buy the book if you're not sure how to do this.
And are there
Hi,
- When using a daily file roll, is the file overwritten
every night - or is it timestamped and a new file is
created? Or will I have to script this myself?
It's timestamped and a new one created, e.g. myLog becomes
myLog.2004-03-31 and a new file called myLog is created.
Yoav Shapira
Hi,
personal tasks), so I set the following system property :
-Dlog4j.configuratorClass=mypackage.MyConfigurator
This system property will then be set for all the webapps, as they all
share the same JVM instance.
Please note I can use a Servlet.init() to configure Log4J because
some
Hi,
When i run my application with
java -classpath all_the_libraries runs well
But when i run normally:
export CLASSPATH all_the_libraries
So you have an environment-related problem most likely: check the JDK
lib/ext directories.
Then
Exception in thread main java.lang.NoClassDefFoundError:
Hi,
I'd offer an extremely simple but usually highly effective heuristic:
log it when it's caught. View logging as part of the handling of an
exception.
Yoav Shapira
Millennium Research Informatics
-Original Message-
From: Larry Young [mailto:[EMAIL PROTECTED]
Sent: Tuesday, March 16,
Hi,
Sorry, this does work.
It was my fault... In the actual program where it first started doing
this, it was pointing a different log file than the one I was looking
at.
In the little test the log file had a syntax error or something.
anyways... sorry for the hassle.
Don't worry, you've no
Howdy,
See
http://nagoya.apache.org/wiki/apachewiki.cgi?Log4JProjectPages/UsefulCod
e.
Yoav Shapira
Millennium ChemInformatics
-Original Message-
From: Serge Huber [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 10, 2004 10:52 AM
To: [EMAIL PROTECTED]
Subject: Is there a way to test
Howdy,
log4j:ERROR Failed to flush writer,
java.io.InterruptedIOException
at java.io.FileOutputStream.writeBytes(Native
Method)
I would treat this as a serious exception. Did you kill the server or
JVM process in the middle of execution? Or did you remove or rename the
log file? If
Howdy,
Or you could just add -Dlog4j.debug=true to your java runtime command. Much simpler ;)
Yoav Shapira
Millennium ChemInformatics
-Original Message-
From: Christian Hufgard [mailto:[EMAIL PROTECTED]
Sent: Tuesday, January 27, 2004 5:57 AM
To: Log4J Users List
Subject: Re:
Howdy,
im just getting started with using log4j and I am trying to use it
within
my
servlet. From reading the archives it appears i need to be using the
MDC
class, but i am a little confused as to how it works and how it is used
in
First of all, the MDC is entirely optional. Many people never
Howdy,
I incurred in a similar doubt lately. Supose you are configuring your
logger programmatically. So you can create an appender, create a
logger,
and set the appender to that logger. In the case you are creating more
than one logger, it may be interesting (but I'm no sure yet...) to
reuse
Howdy,
log4j.rootLogger=DEBUG, A1, mailer
log4j.logger.aClass=DEBUG, A2, mailer
Because aClass inherits from the root by default, you don't need to
declare the mailer again. You'll get duplicate messages.
Yoav Shapira
This e-mail, including any attachments, is a confidential business
Howdy,
We've been using log4j in production for years without any failures.
He means reliable in a less common sense of the word, I think, in that
log4j will notify you if it fails and try to do its best to continue.
Yoav Shapira
Millennium ChemInformatics
-Original Message-
From:
Howdy,
The parameter could be a comma-delimited string, which you could parse
with a StringTokenizer very easily.
But why are you doing this?
Yoav Shapira
Millennium ChemInformatics
-Original Message-
From: Pitre, Russell [mailto:[EMAIL PROTECTED]
Sent: Monday, January 12, 2004 9:33
Howdy,
Really? Can you give a specific place in their code where they're doing
this?
Yoav Shapira
Millennium ChemInformatics
-Original Message-
From: Robert Augustyn [mailto:[EMAIL PROTECTED]
Sent: Tuesday, January 06, 2004 2:31 PM
To: 'Log4J Users List'
Subject: RE: suppressing
, January 06, 2004 2:52 PM
To: 'Log4J Users List'
Subject: RE: suppressing messages
Look into jboss-common-client package.
Best place would be to ask on jboss.org.
robert
-Original Message-
From: Shapira, Yoav [mailto:[EMAIL PROTECTED]
Sent: Tuesday, January 06, 2004 2:42 PM
To: Log4J Users List
messages
Look into jboss-common-client package.
Best place would be to ask on jboss.org.
robert
-Original Message-
From: Shapira, Yoav [mailto:[EMAIL PROTECTED]
Sent: Tuesday, January 06, 2004 2:42 PM
To: Log4J Users List
Subject: RE: suppressing messages
Howdy,
Really? Can you give
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