No log4j2 configuration file found Using default configuration logging only errors to the console

Question

java -Dlog4j configuration file    path to your log4j2 xml -jar  path to your jar file jar   Written to the console  you get  ERROR StatusLogger No log4j2 configuration file found  Using default configuration  logging only errors to the console    But  it also looks like the configuration file has been found and was not parsable       log4j WARN Continuable parsing error 2 and column 31     log4j WARN Document root element  Configuration   must match DOCTYPE root  null       log4j WARN Continuable parsing error 2 and column 31     log4j WARN Document is invalid  no grammar found      log4j ERROR DOM element is - not a  lt log4j configuration gt  element      log4j WARN No appenders could be found for logger  kafka utils VerifiableProperties       log4j WARN Please initialize the log4j system properly      log4j WARN See http   logging apache org log4j 1 2 faq html noconfig for more info

User · Answer

I use hive jdbc in a java maven project and have the same issues.

My method is to add a log4j2.xml file under src/main/java/resources

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MyClassName {
    private static final Logger LOG = LoggerFactory.getLogger(MyClassName.class);
}

log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="WARN">
    <Appenders>
        <Console name="Console" target="SYSTEM_OUT">
            <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
        </Console>
    </Appenders>
    <Loggers>
        <Logger name="<your_package_name>.<your_class_name>" level="debug">
        <AppenderRef ref="Console"/>
        </Logger>
        <Root level="WARN">
            <AppenderRef ref="Console"/>
        </Root>
    </Loggers>
</Configuration>

User · Answer

Stuffs I check to verify logging    1  Check that there re no older log4j versions   mvn dependency tree   grep log      gradlew dependencies   grep log  INFO   - com prayagupd log-service jar 1 0 compile  INFO   - org apache logging log4j log4j-api jar 2 6 2 compile  INFO   - org apache logging log4j log4j-core jar 2 6 2 compile  INFO      - commons-logging commons-logging jar 1 1 1 compile   2  make sure I m setting log4j2 json properly  which is done with         -Dlog4j configurationFile      val logConfig  PropertiesConfiguration   new PropertiesConfiguration  application properties   System setProperty  log4j configurationFile   logConfig getString  log4j config file     println  log4j configurationFile        System getProperty  log4j configurationFile      or   Configurator initialize null  logConfig getString  log4j config file       Also if auto detection is happening make sure the file name is log4j2   not log4j    3  Another check is for parser for log4j2 json  Thanks log4j team for not providing parser within the API    lt dependency gt       lt groupId gt com fasterxml jackson core lt  groupId gt       lt artifactId gt jackson-databind lt  artifactId gt       lt version gt 2 4 0 lt  version gt   lt  dependency gt    This might throw an exception if can not find the json parser   Fatal Error  log4j2 json 1 1  Content is not allowed in prolog

User · Answer

The issue solved after renaming the xml file name to log4j2 xml

User · Answer

This sometimes can be thrown before the actual log4j2 configuration file found on the web servlet  at least for my case I think so  Cuz I already have in my web xml     lt context-param gt       lt param-name gt log4jConfiguration lt  param-name gt       lt param-value gt classpath log4j2-app xml lt  param-value gt     lt  context-param gt    and checking the log4j-web source  in class   org apache logging log4j web Log4jWebInitializerImpl   there is the line    String location   this substitutor                   replace this servletContext getInitParameter  log4jConfiguration       all those makes me think that this is temporary log before configuration found

User · Answer

I am getting this error because log4j2 file got deleted from my src folder  Simply add xml file under src folder      lt Appenders gt       lt Console name  Console  target  SYSTEM OUT  gt           lt PatternLayout pattern   d yyyy-MM-dd HH mm ss    t   -5p  c 1   L -  msg n    gt       lt  Console gt        lt RollingFile name  RollingFile  filename  logs B2CATA-hybrid log          filepattern    logPath   d yyyyMMddHHmmss -fargo log  gt           lt PatternLayout pattern   d yyyy-MM-dd HH mm ss    t   -5p  c 1   L -  msg n    gt           lt Policies gt               lt SizeBasedTriggeringPolicy size  100 MB    gt           lt  Policies gt           lt DefaultRolloverStrategy max  20    gt       lt  RollingFile gt    lt  Appenders gt   lt Loggers gt      lt Logger name  com pragiti   level  trace    gt       lt Root level  info  gt           lt AppenderRef ref  Console    gt           lt AppenderRef ref  RollingFile    gt       lt  Root gt   lt  Loggers gt

User · Answer

lt  xml version  1 0  encoding  UTF-8   gt   lt Configuration status  WARN  gt   lt Appenders gt   lt Console name  Console  target  SYSTEM OUT  gt     lt PatternLayout pattern   d HH mm ss SSS    t   -5level  logger 36  -  msg n   gt   lt  Console gt   lt  Appenders gt   lt Loggers gt   lt Root level  DEBUG  gt     lt AppenderRef ref  Console   gt   lt  Root gt   lt  Loggers gt   lt  Configuration gt     Create a new Text document and copy-paste the above code and save it as log4j2 xml  Now copy this log4j2 xml file and paste it under your src folder of your Java project   Run your java program again  you will see error is gone

User · Answer

Tested with  log4j-ap 2 13 2  log4j-core 2 13 2   Keep XML file directly under below folder structure  src main java In the POM         lt build gt       lt resources gt                       lt resource gt                   lt filtering gt false lt  filtering gt                   lt directory gt src main resources lt  directory gt                   lt includes gt                       lt include gt      xml lt  include gt                   lt  includes gt                            lt  resource gt    lt  resources gt     lt  build gt     Clean and build

User · Answer

I have been dealing with this problem for a while  I have changed everything as described in this post and even thought error occured  In that case make sure that you clean the project when changing settings in  xml or  properties file  In eclipse environment  Choose Project -  Clean

User · Answer

Just try below steps  it will work    Keep XML file directly under below folder structure  src main java Make sure to save the pom xml file in case any changes made

User · Answer

Problem 1  ERROR StatusLogger No log4j2 configuration file found  Using default configuration  logging only errors to the console    Solution 1  To work with version 2 of log4j aka  log4j2    -Dlog4j configuration    should read  -Dlog4j configurationFile     1 2 manual  http   logging apache org log4j 1 2 manual html  2 x manual  http   logging apache org log4j 2 x manual configuration html   Problem 2  log4j WARN        Solution 2  In your project  uninclude the log4j-1 2 jar and instead  include the log4j-1 2-api-2 1 jar   I wasn t sure how exactly to exclude the log4j 1 2   I knew that what dependency of my project was requiring it   So  with some reading  I excluded a bunch of stuff    lt dependency gt       lt groupId gt org apache kafka lt  groupId gt       lt artifactId gt kafka 2 10 lt  artifactId gt       lt version gt 0 8 2 0 lt  version gt       lt exclusions gt           lt exclusion gt               lt groupId gt org apache logging log4j lt  groupId gt               lt artifactId gt log4j-core lt  artifactId gt                           lt  exclusion gt           lt exclusion gt               lt groupId gt org apache log4j lt  groupId gt               lt artifactId gt log4j-core lt  artifactId gt           lt  exclusion gt           lt exclusion gt               lt groupId gt log4j lt  groupId gt               lt artifactId gt log4j lt  artifactId gt           lt  exclusion gt                 lt  exclusions gt   lt  dependency gt    I am not sure which of the exclusions did the trick  Separately  I included a dependency to the 1 2 api which bridges to 2 x    lt  --     http   logging apache org log4j 2 0 manual migration html     http   logging apache org log4j 2 0 maven-artifacts html     Log4j 1 x API Bridge     If existing components use Log4j 1 x and you want to have this logging     routed to Log4j 2  then remove any log4j 1 x dependencies and add the     following  -- gt   lt dependency gt       lt groupId gt org apache logging log4j lt  groupId gt       lt artifactId gt log4j-1 2-api lt  artifactId gt       lt version gt 2 2 lt  version gt   lt  dependency gt    Now  the 1 2 logs which were only going to the console actually flow to our 2 x appenders

User · Answer

If you don t have the fortune of the log4j-1 2 jar on your classpath as Renko points out in his comment  you will only see the message no log4j2 configuration file found   This is a problem if there is an error in your configuration file  as you will not be told where the problem lies upon start-up   For instance if you have a log4j2 yaml file which log4j2 fails to process  because for example  you have not configured a YAML parser for your project  or your config is simply incorrect  You will encounter the no log4j2 configuration file found message  with no further information  This is the case even if you have a valid log4j2 xml file  as log4j2 will only attempt to process the first configuration file it finds   I ve found the best way to debug the problem is to explicitly state the configuration file you wish to use as per the command line argument mentioned above   -Dlog4j configurationFile    Hopefully this will help you pinpoint if the issue is actually caused by your classloader not finding the log4j2 configuration file or something else in your configuration   Update  You can also use the below property to change the default level of the status logger to get further information   -Dorg apache logging log4j simplelog StatusLogger level  lt level gt

User · Answer

In my case I am using the log4j2 Json file log4j2 json in the classpath of my gradle project and I got the same error   The solution here was to add dependency for JSON handling to my gradle dependencies    compile group  com fasterxml jackson core   name  jackson-core   version  2 8 4  compile group  com fasterxml jackson core   name  jackson-databind   version  2 8 4  compile group  com fasterxml jackson core   name  jackson-annotations   version  2 8 4    See also documentation of log4j2      The JSON support uses the Jackson Data Processor to parse the JSON   files  These dependencies must be added to a project that wants to use   JSON for configuration

User · Answer

i had same problem  but i noticed that i have no log4j2 xml in my project after reading on the net about this problem  so i copied the related code in a notepad and reverted the notepad file to xml and add to my project under the folder resources  it works for me    lt  xml version  1 0  encoding  UTF-8   gt   lt Configuration status  WARN  gt   lt Appenders gt   lt Console name  Console  target  SYSTEM OUT  gt     lt PatternLayout pattern   d HH mm ss SSS    t   -5level  logger 36  -  msg n   gt   lt  Console gt   lt  Appenders gt   lt Loggers gt   lt Root level  DEBUG  gt     lt AppenderRef ref  Console   gt   lt  Root gt   lt  Loggers gt   lt  Configuration gt

User · Answer

I am working on TestNG Maven project  This worked for me by adding  lt resources gt  tag in pom xml  this happens to be the path of my custom configuration file log4j2 xml      lt url gt http   maven apache org lt  url gt   lt properties gt     lt project build sourceEncoding gt UTF-8 lt  project build sourceEncoding gt     lt project reporting outputEncoding gt UTF-8 lt  project reporting outputEncoding gt   lt  properties gt   lt build gt     lt resources gt       lt resource gt         lt directory gt src main java resources lt  directory gt         lt filtering gt true lt  filtering gt       lt  resource gt     lt  resources gt     lt pluginManagement gt       lt plugins gt         lt plugin gt           lt groupId gt org apache maven plugins lt  groupId gt           lt artifactId gt maven-surefire-plugin lt  artifactId gt           lt version gt 3 0 0-M3 lt  version gt           lt configuration gt             lt suiteXmlFiles gt               lt suiteXmlFile gt testng xml lt  suiteXmlFile gt             lt  suiteXmlFiles gt           lt  configuration gt         lt  plugin gt       lt  plugins gt     lt  pluginManagement gt   lt  build gt   lt dependencies gt     lt dependency gt

User · Answer

Make sure that you have put a log4j2   file instead of a log4j   file under     src main resources folder

User · Answer

I have solve this problem by configuring the build path  Here are the steps that I followed   In eclipse    create a folder and save the logj4 file in it  Write click in the folder created and go to Build path  Click on Add folder Choose the folder created  Click ok and Apply and close    Now you should be able to run

[java] No log4j2 configuration file found. Using default configuration: logging only errors to the console

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