Hello all, I am using Log4J 1.2.15, and I have the need to output a special, custom, pattern to my appenders. I have looked up at the samples and googled around and I sort of have it working, however, when I try to add my custom pattern property "instanceId" to the NT Logger, I get a NPE.
My properties file is like this: log4j.rootLogger=WARN, stdout, rfa, nta log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.rfa=org.apache.log4j.RollingFileAppender log4j.appender.nta=org.apache.log4j.nt.NTEventLogAppender log4j.appender.stdout.layout=com.mypackage.CUSTPatternLayout log4j.appender.stdout.layout.instanceId=PC1 log4j.appender.stdout.layout.ConversionPattern=%d{ISO8601} %G [%t] %-5p %c - %m%n log4j.appender.rfa.layout=com.mypackage.CUSTPatternLayout log4j.appender.rfa.layout.instanceId=PC1 log4j.appender.rfa.layout.ConversionPattern=%d{ISO8601} %G [%t] %-5p %c - %m%n log4j.appender.nta.layout=com.mypackage.CUSTPatternLayout log4j.appender.nta.layout.instanceId=PC1 log4j.appender.nta.layout.ConversionPattern=%d{ISO8601} %G [%t] %-5p %c - %m%n The actual NPE comes from the nta.layout.instanceId, when I remove it, it all works fine. I have debugged the code for the CUSTPatternLayout class, and I got a bit confused as to how it all works. And that is where you guys come in! I am confused as to how to the instances work, when I do something like this: private final Logger logger = Logger.getLogger(MyClass.class); Is there an instance created of CUSTPatternLayout for the layout property of each appender? If so, can I get each appender to share the same instance of CUSTPatternLayout? like: log4j.appender.layout=com.mypackage.CUSTPatternLayout ??? I am a bit confused about it all at the moment, but Im getting there... Thanks for anyone who can help out here, it is greatly appreciated! Mark -- View this message in context: http://www.nabble.com/Custom-Parser-to-handle-special-properties-tp18882222p18882222.html Sent from the Log4j - Users mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]