Latest Questions tagged Log4j2

Browse all latest questions tagged Log4j2

56
Votes
Published 26 Oct, 2022
Java - Logs are not loading according to Log4j2.properties

I am upgrading to Log4j to Log4j2 in my project. I have put log4j2.properties in the classpath, and its loading. Despite that logs are not coming according to properties defined in log4j2.properties....

56
Votes
Published 19 Sep, 2022
Java - Log4j 2. How get log4j's debug messages?

As far as i understand log4j can handle system property -Dlog4j.debug. If you run your app with it you will get log4j's debug output. Example: java -Dlog4j.debug -jar test.jar Is there something sim...

80
Votes
Published 07 Sep, 2022
Java - Apache Log4j2 package specific logging using log4j2.xml

I am using log4j2. But the problem that I am facing is that it logs all logs. I want to ... log from specific package to a specific file & other package to another file. I am using log4j2.xml for...

13
Votes
Published 30 Aug, 2022
Java - slf4j in library seems to ignore my log4j2 configuration

We use Log4j2 in our java-ee application. We use a library, where logging is programmed against SLF4J. In this library is a class, which logs a lot of stuff I do not want -> so I want to set LogLevel...

86
Votes
Published 21 Aug, 2022
Java - Springboot with log4j2, structured JSON logging

Small question regarding how to achieve structured logging with a SpringBoot app, but using log4j2 (working with logback, but not log4j). I have a super simple SpringBoot app: @RestController @SpringB...

33
Votes
Published 06 Sep, 2022
Java - Is it possible for using different pattern layout for different log level and output to SYSTEM_OUT?

For log4j2, is it possible for using different pattern layout for different log level and output to SYSTEM_OUT? Here is my log4j2.xml: <?xml version="1.0" encoding="UTF-8"?> <Config...

6
Votes
Published 04 Sep, 2022
Java - how to log only one level with log4j2?

I'm using log4j2 in my application. What I want is everything up to 'debug' to go to console, everything up to 'info' to go to myapp.log, and ONLY 'info' to go to 'myapp-audit.log'. The reason is, I...

130
Votes
Published 30 Aug, 2022
Java - Log4j vulnerability - Is Log4j 1.2.17 vulnerable (was unable to find any JNDI code in source)?

With regard to the Log4j JNDI remote code execution vulnerability that has been identified CVE-2021-44228 - (also see references) - I wondered if Log4j-v1.2 is also impacted, but the closest I got fr...

72
Votes
Published 23 Aug, 2022
Java - How to flush Asynchronous loggers in Log4J2 (with disruptor)

I'm using Log4J2 "Making All Loggers Asynchronous" section by setting: -DLog4jContextSelector=org.apache.logging.log4j.core.async.AsyncLoggerContextSelector. https://logging.apache.org/log4j/2.x/ma...

18
Votes
Published 19 Aug, 2022
Java - Spring boot not searching for log4j2 configuration file

I am trying to use Apache Log4j 2.12.1 with Spring Boot 2.2.1 but when I run, it doesn't give any warning about missing log4j 2 configuration file. Below is the code for logging(Simple once class to t...

114
Votes
Published 11 Aug, 2022
Java - How to Create a Custom Appender in log4j2?

As disscussed in this link : How to create a own Appender in log4j? For creating a custom appender in log4j 1.x we have to extend the AppenderSkeleton class and implements its append method. Similar...

37
Votes
Published 09 Aug, 2022
Java - How to add appender to Logger in Log4j2

In Log4j 1.2, you could simply take a logger and add an appender at runtime. This was handy for test purposes for instance. We used to create a mock appender and add it to the logger. Subsequently we...

6
Votes
Published 15 Sep, 2022
Java - How to add the date timestamp to log4j2 logfiles?

I want to create day dependent logfiles with log4j2: <RollingFile name="APP" fileName="application-%d{yyyy-MM-dd}.log" /> Resulting logfile name: application-%d{yyyy-MM-dd}.log, the timestamp...

75
Votes
Published 07 Sep, 2022
Java - How to delete old logs with log4j2

( F.Y.I. I already searched out many documents in Internet. I'm using storm-0.10.0-beta1. Configuration file of log4j2 in Storm is worker.xml ) Now, I try to use log4j2. I'm searching out way of del...

34
Votes
Published 07 Sep, 2022
Java - Log4j2 RegexFilter pattern does not match

I've got the following lines in my log that I want to exclude, so I wanted to use a RegexFilter to do so: [INFO ] 2018-05-20 14:52:15.993 [qtp22844606-20] TimingFilter - Request time: 16 ms...