log4j WARN No appenders could be found for logger running jar file not web app

Question

First up - yes  I have read the multiple questions  amp  answers on this topic  and can t get any of the solutions within those to help me  I m not running Tomcat or JBoss and I don t have a web xml file to change  I m using Java 6 0 and log4j-1 2 8 jar   I am creating a runnable jar file with IDEA IntelliJ with jar libraries packaged separately and linked via the manifest  I am running my code on a Linux server thus   me server  mydir gt  java -jar code myjar jar log4j WARN No appenders could be found for logger  FactoredEventsForTrna   log4j WARN Please initialize the log4j system properly    My log4j configuration file  which I ve placed both in mydir and mydir code  just in case  is      Logger configure file for myproject log dir log  datestamp yyyy-MM-dd HH mm ss SSS log4j rootLogger TRACE  file  proappender  console  log4j appender file org apache log4j RollingFileAppender log4j appender file maxFileSize 1GB log4j appender file maxBackupIndex 5 log4j appender file File log mydebug log log4j appender file threshold TRACE log4j appender file layout org apache log4j PatternLayout log4j appender file layout ConversionPattern  d   datestamp    5p   c 2  -  m n  log4j appender proappender org apache log4j RollingFileAppender log4j appender proappender maxFileSize 5GB log4j appender proappender Threshold INFO log4j appender proappender File log myinfo log log4j appender proappender layout org apache log4j PatternLayout log4j appender proappender layout ConversionPattern  d   datestamp    5p   c 2  -  m n  log4j appender console org apache log4j ConsoleAppender log4j appender console Threshold DEBUG log4j appender console layout org apache log4j PatternLayout log4j appender console layout ConversionPattern  d   datestamp    5p   c 2  -  m n   And I have created the log  directory in mydir and mydir code  again  just in case   Any ideas

User · Accepted Answer

There are many possible options for specifying your log4j configuration. One is for the file to be named exactly "log4j.properties" and be in your classpath. Another is to name it however you want and add a System property to the command line when you start Java, like this:

-Dlog4j.configuration=file:///path/to/your/log4j.properties

All of them are outlined here http://logging.apache.org/log4j/1.2/manual.html#defaultInit

User · Answer

Man  I had the issue in one of my eclipse projects  amazingly the issue was the order of the jars in my  project file  believe it or not

User · Answer

Solution   Download log4j jar file Add the log4j jar file to build path Call logger by   private static org apache log4j Logger log        Logger getLogger  lt class-where-this-is-used gt  class    if log4j properties does not exist  create new file log4j properties file new file in bin directory    workspace projectdirectory bin     Sample log4j properties file  log4j rootLogger debug  stdout log4j appender stdout org apache log4j ConsoleAppender log4j appender stdout Target System out log4j appender stdout layout org apache log4j PatternLayout log4j appender stdout layout ConversionPattern  t  -5p  c 2  -  m n

User · Answer

Move Your log4j properties file into the src folder  Open Windows explorer  browse to the directory where your project resides in  Browse to bin directory and delete all the folders with in it   Now in eclipse click project---- clean---- OK  This would force it to build the project again all the contents delete from bin directory will be recreated   I took while to figure this out  At times directly clicking clean doesn t work

User · Answer

You will find de log4j properties in solr examples resources   If you don t find the file  i put it here      Logging level solr log logs  log4j rootLogger INFO  file  CONSOLE  log4j appender CONSOLE org apache log4j ConsoleAppender  log4j appender CONSOLE layout org apache log4j PatternLayout log4j appender CONSOLE layout ConversionPattern  -4r   t   -5p  c  x  u2013  m n   - size rotation with log cleanup  log4j appender file org apache log4j RollingFileAppender log4j appender file MaxFileSize 4MB log4j appender file MaxBackupIndex 9   - File to log to and log format log4j appender file File   solr log  solr log log4j appender file layout org apache log4j PatternLayout log4j appender file layout ConversionPattern  -5p -  d yyyy-MM-dd HH mm ss SSS    C   m n  log4j logger org apache zookeeper WARN log4j logger org apache hadoop WARN    set to INFO to enable infostream log messages log4j logger org apache solr update LoggingInfoStream OFF   Regards

User · Answer

put the folder which has the properties file for log in java build path source  You can add it by right clicking the project ----  build path -----  configure build path ------  add t

User · Answer

I had moved my log4j properties into the resources folder and it worked fine for me

[java] log4j:WARN No appenders could be found for logger (running jar file, not web app)

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