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Questions tagged [pattern-layout]

This tag refers to the method of formatting the logging output by specifying a formatting string, in a family of logging libraries based on log4j. Please use this tag along with the appropriate logging library tag.

Pattern layout originates from the popular Java logging library, log4j. The library influenced a wide range of clones and implementations in various languages. One of its core concepts, the pattern layout, which allows users to customize their logging output by specifying a pattern, comes along with log4j-inspired libraries in a fairly similar manner.

Pattern layout definitions:

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How to add the Process id to a LOG4J log file?

I currently have the below pattern layout in log4j. I want to add the Process id to the log file. How can I do it? log4j.appender.A1.layout=org.apache.log4j.PatternLayout log4j.appender.A1.layout.ConversionPattern=%d [%t] %-5p %c - %m%n Pasted…
Arav
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Log4j, patternLayout, class and category

I am having trouble establishing the exact difference between using those two log4j conversion characters when used in a log4j PatternLayout (log4j patternLayout) category (%c) class (%C) Can someone please give me an example where those two would…
balteo
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Is there a log4net pattern for machineName

I'm having a hard time finding documentation on the various 'in the box' patterns like %logger %level %timestamp There is of course the example page but I'm not sure that's the full list of options. I also know that it's possible to MDC…
Ralph Shillington
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Limit max message size in log4j2 pattern

In log4j 2, I would like to trim the end of messages written to the console appender when size is above a specified threshold. I looked at the http://logging.apache.org/log4j/2.0/manual/layouts.html#PatternLayout docs but can see no option to…
dux2
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How to escape only message instead of all row in log4j?

I have the following PatternLayout: public class EscapedEnhancedPatternLayout extends EnhancedPatternLayout { @Override public String format(LoggingEvent event) { return StringEscapeUtils.escapeJava(super.format(event)); } } but…
gstackoverflow
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3 answers

Why is there a space at the beginning of each line of my Logback-generated log file?

I'm using Logback for logging. At the beginning of each line after the first line is a space. Any idea why? Below is my logback.xml:
noahlz
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log4j pattern %X and what property to assign to it

i am trying to use a log viewer (doesn't matter which one) to parse my log files. my log4j pattern is this. %p [%t] (%C{1}:%M():%L) %d{dd/MM/yyyy-HH:mm:ss,SSS} S:%X{serviceType} N:%X{requestID}- %m%n the log viewers (at least the open source ones)…
Gleeb
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log4j2 exception handling not working

I am using log4j2 with this 2 dependencies: org.apache.logging.log4j log4j-core 2.6.2 …
Zoltan
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4
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3 answers

RollingFile Appender Log4j2 not printing Line number

I am using log4j2 with following dependency :: org.apache.logging.log4j log4j-api 2.0-rc1 …
Anand Kadhi
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Log4j2 overwrites past day log file

I'm using Log4j2 ver 2.3 log4j2.xml looks like:
JackTheKnife
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4 answers

How to use aspnet-session pattern layout?

I have adonet appender and I defined additional column. I want to get the userId from the asp.net session and do log. According to this page there is %aspnet-session{key} pattern which I use like this:
mynkow
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Ho to use xml or html layout with the Grails Log4j DSL

I am traying to get log4j to log to file in XMLLayout using the groovy log4j dsl. However, it seems that the "layout:"-part is being ignored. This is my setup: appenders { file name: 'fileAppender', layout: xml, file: '/tmp/logs/applog.xml',…
Julian
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gwt logging patternlayout

Does the gwt logger have a PatternLayout similar to log4j's pattern layout?
hba
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Log4j2 converting multiline logs stacktraces into single line

I'm trying to push the logs my Elasticserver logs to rsys and then FLuentd. For this the stacktrace error logs should be in one line. It was multiline before 443 [2022-08-05T07:45:38,068][ERROR][o.e.i.g.GeoIpDownloader ] [techsrv01] exception…
Gautam
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slf4j-ext NDC PatternLayout

NDC (Nested Diagnostic Context) in: org.slf4j slf4j-ext is implemented using the org.slf4j.MDC. While…
Marcin
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