How to set log4j property file?

Question

I have an Eclipse Java Project which uses log4j. I can\'t set the log4j configuration file to be accessed by file path. I have to export and run the project in a jar.

He

Answer 1

All these above answer didn't satisfy so I post here for someone who might needs this in the future:

1. You need to specify where your property is. Either by program or command option is fine.

Programatically:

private static void setupLog4J(){
    try {
        System.setProperty("log4j.configuration", new File(".", File.separatorChar+"log4j.properties").toURL().toString());
    } catch (MalformedURLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

2. Create your own log4j.properties file:

#  Logging level
# Root logger option
log4j.rootLogger=DEBUG, stdout, file

# Redirect log messages to console
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=%d{yyyy-MM-dd HH:mm:ss} %-5p     %c{1}:%L - %m%n

# Redirect log messages to a log file, support file rolling.
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=c:/project/resources/t-output/log4j-application.log
log4j.appender.file.MaxFileSize=5MB
log4j.appender.file.MaxBackupIndex=10
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n

Hope this helps.