Log4j Frequently Asked Questions
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Some frequently asked questions (FAQs):
How do I configure log4j component X in XML? |
Please see Log4jXmlFormat? |
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How do I configure |
Please see JDBCAppenderConfiguration |
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What are the NDC and MDC classes used for in log4j and which one should I use? |
Please see NDCvsMDC |
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Why would I use Log4J when Sun has a logging API? |
Please see Log4jvsJDKLogging. |
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How can I get log messages of different level values into different log files? |
Please see [ LogByLevel ] |
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How can I add a new |
See example in [ TraceLevel ]. |
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How do I start the |
Please see LogFactor5FAQ |
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Where are the example log4j.xml files located? |
Please see XMLConfigurationExamples. |
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How do I configure log4j so that programs in multiple JVMs can log to the same file and rollover daily (using |
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How do I upgrade from log4j 1.0.x or 1.1.x to log4j 1.2.x? |
Please see Log4jUpgradePath |
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How do I determine if a particuliar log level is set (to avoid multiple evaluations of logging statements)? |
The Logger class supports the methods isDebugEnabled(), isInfoEnabled(), and isWarnEnabled(). |
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Why do you have both logfactor5 and chainsaw? Which one is better maintained/more current? |
Please see Logfactor5vsChainsaw. |
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Are there step-by-step instructions for using Chainsaw to view log events from a SocketHubAppender? |
Please see ChainsawAndSocketHubWalkthrough. |
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How do I log in a container environment without colliding with the logging configuration of other applications using Log4j? |
Please see [ AppContainerLogging ] |
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What about the Jakarta Commons logging API? |
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Can I send mails to multiple recipients using SMTP Appender of log4j. If yes how should I build the XML file for this so that I can pass it to DOMConfigurator? |
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How much longer will my program work if I use log4j? |
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Where are the example log4j.properties files located? |
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Is there an OS web service implementation of Log4J? |
[To whom it may concern: can you please elaborate?] |
]]></ac:plain-text-body></ac:structured-macro> |
How is log cleanup handled when using |
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Is it possible to make |
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Is log4j thread-safe? E.g. can I use the same Logger in different threads for log.info()? |
The answer is yes. |
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Should Logger variables be declared static? |
See [ Log4JStatic ] |
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When log4j is installed on tomcat on windows 2000, the server restarts whereas if it is on windows 98 it works well. Can anyone help me? |
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My project is currently using System.out.println() statements to print debug statements. Is there any automated process to replace these statements with debug statements? |
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Is it possible to use log4j to log a) html form submission, b) hyperlink clicks, c) points in a JavaScript function as it's being executed? |
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What's the rationale behind LogFactor5 not System.exit()ing when you click the close button? What purpose is there for that JVM left running? Can you get the window back without starting a new session? |
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What's the fix for a socket write error when trying to write to Chainsaw? |
See [ ChainsawLocationInfo ] |
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How can I write different level of logs to different files? |
See [ LogToAppenderByLevel ] |
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Is it possible to pass a System Property as part of a file name for a file appender? Rather than setting the file name programatically? |
See [ SystemPropertiesInConfiguration ] |
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How can I get notified of errors during configuration and then handle them? For example, I want to log to a file but the directory does not exist yet. I want to catch that configuration error, create the directory and restart configuration. |
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How can I make the log4j output in Eclipse act as links into my source code? If I use the "%l" in my PatternLayout I get a hyperlink, but I get an Eclipse parse error when I click on it. |
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How I can log message with single quote |
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How I get automatic configuration to work? |
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What do I do when I get "log4j:WARN No appenders could be found for logger" |
Chainsaw frequently asked questions (FAQs):