Where should I put the log4j properties file

Question

I wrote a web service project using netbeans 6 7 1 with glassfish v2 1  put log4j properties to the root dir of project and use   static Logger logger   Logger getLogger MyClass class     in Constructor   PropertyConfigurator configure  log4j properties      and in functions   logger info         logger error                  but  it is error info actually  I have tried to put it almost every dir that I could realize    log4j ERROR Could not read configuration file  log4j properties   java io FileNotFoundException  log4j properties  The system cannot find the file specified          at java io FileInputStream open Native Method          at java io FileInputStream  lt init gt  FileInputStream java 106          at java io FileInputStream  lt init gt  FileInputStream java 66          at org apache log4j PropertyConfigurator doConfigure PropertyConfigurator java 297          at org apache log4j PropertyConfigurator configure PropertyConfigurator java 315          at com corp ors demo OrsDemo main OrisDemo java 228  log4j ERROR Ignoring configuration file  log4j properties   log4j WARN No appenders could be found for logger  com corp ors demo OrsDemo   log4j WARN Please initialize the log4j system properly    the example project could be get from http   www 91files com  N3F0QGQPWMDGPBRN0QA8

User · Answer

I ve spent a great deal of time to figure out why the log4j properties file is not seen   Then I noticed it was visible for the project only when it was in both MyProject target classes  and MyProject src main resources folders   Hope it ll be useful to somebody   PS  The project was maven-based

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I found that Glassfish by default is looking at  Glassfish install location  glassfish domains your domain   as the default working directory     you can drop the log4j properties file in this location and initialize it in your code using PropertyConfigurator as previously mentioned     Properties props   System getProperties    System out println  Current working directory is     props getProperty  user dir     PropertyConfigurator configure  log4j properties

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A few technically correct specific answers already provided but in general  it can be anywhere on the runtime classpath  i e  wherever classes are sought by the JVM   This could be the  src dir in Eclipse or the WEB-INF classes directory in your deployed app  but it s best to be aware of the classpath concept and why the file is placed in it  don t just treat WEB-INF classes as a  magic  directory

User · Answer

You don t need to specify PropertyConfigurator configure  log4j properties    in your Log4J class  If you have already defined the log4j properties in your project structure   In case of Web Dynamic Project  -  You need to save your log4j properties under WebContent -  WEB-INF -  log4j properties  I hope this may help you

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Actually  I ve just experienced this problem in a stardard Java project structure as follows    myproject      src      libs      res log4j properties   In Eclipse I need to add the res folder to build path  however  in Intellij  I need to mark the res folder as resouces as the linked screenshot shows  right click on the res folder and mark as resources

User · Answer

Try   PropertyConfigurator configure getClass   getResource   controlador log4j properties

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Put log4j properties in classpath  Here is the 2 cases that will help you to identify the proper location-  1  For web application the classpath is  WEB-INF classes     WEB-INF           classes          log4j properties    To test from main   unit test the classpath is source directory     Project     src        log4j properties

User · Answer

For a Maven Based Project keep your log4j properties in src main resources  Nothing else to do

User · Answer

The file should be located in the WEB-INF classes directory  This directory structure should be packaged within the war file

User · Answer

You have to put it in the root directory  that corresponds to your execution context   Example       MyProject        src            MyClass java            log4j properties   If you start executing from a different project  you need to have that file in the project used for starting the execution  For example  if a different project holds some JUnit tests  it needs to have also its log4j properties file     I suggest using log4j xml instead of the log4j properties  You have more options  get assistance from your IDE and so on

User · Answer

I don t know this is correct way But it solved my problem  put log4j properties file in  project folder  config and use PropertyConfigurator configure  config  log4j properties     it will works with IDE but not when run the jar file yourself  when you run the jar file by yourself just copy the log4j properties file in to the folder that jar file is in when the jar and property file in same directory it runs well

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Your standard project setup will have a project structure something like  src main java src main resources  You place log4j properties inside the resources folder  you can create the resources folder if one does not exist

User · Answer

There are many ways to do it   Way1  If you are trying in maven project without Using PropertyConfigurator  First    check for resources directory at scr main    if available         then  create a  properties file and add all configuration details    else        then  create a directory named resources and a file with  properties      write your configuration code details    follows the screenshot     Way2  If you are trying with Properties file for java maven project Use PropertyConfigurator   Place properties file anywhere in project and give the correct path  say  src javaLog4jProperties log4j properties  static    PropertyConfigurator configure  src javaLog4jProperties log4j properties           Way3  If you are trying with xml on java maven project Use DOMConfigurator   Place properties file anywhere in project and give correct path  say  src javaLog4jProperties log4j xml  static    DOMConfigurator configure  src javaLog4jProperties log4j xml

User · Answer

You can specify config file location with VM argument -Dlog4j configuration  file  C  workspace3 local log4j properties

User · Answer

If you put log4j properties inside src  you don t need to use the statement -   PropertyConfigurator configure  log4j properties      It will be taken automatically as the properties file is in the classpath

User · Answer

I know it s a bit late to answer this question  and maybe you already found the solution  but I m posting the solution I found  after I googled a lot  so it may help a little    Put log4j properties under WEB-INF classes of the project as mentioned previously in this thread  Put log4j-xx jar under WEB-INF lib Test if log4j was loaded  add -Dlog4j debug   the end of your java options of tomcat   Hope this will help   rgds

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As already stated  log4j properties should be in a directory included in the classpath  I want to add that in a mavenized project a good place can be src main resources log4j properties

User · Answer

My IDE is NetBeans  I put log4j property file as shown in the pictures  Root    Web    WEB-INF    To use this property file you should to write this code   package example   import java io File  import org apache log4j PropertyConfigurator  import org apache log4j Logger  import javax servlet    public class test    public static ServletContext context  static Logger log   Logger getLogger  example test     public test              String homeDir   context getRealPath               File propertiesFile   new File homeDir   WEB-INF log4j properties            PropertyConfigurator configure propertiesFile toString             log info  This is a test              You can define static ServletContext context from another JSP file  Example   test context   getServletContext     test sample   new test       Now you can use log4j property file in your projects

[java] Where should I put the log4j.properties file?

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