Hi Matt, Well what I wanted to to is to have a class like my LogFile.java file where I define everything I need for the logfile. And as you can see I also have done a method called logError(String message) which I call and make 2 info logging and then an error logging. So I don't need all time to rewrite 3 lines or more everytime I want to log something.
Thanks in advance for your help. Best regards, Dany Matt Brown wrote: > > If each of your classes create a new LogFile instance, and the constructor > of the LogFile class creates a new appender and adds it to the root > logger, then this means that you've attached N copies of the appender to > the root logger. This explains why you are seeing the message duplicated > in the file, since each appender is writing to the same file. > > Is there any reason why you don't have each class get a Logger instance > with the same name of the class? This is the standard usage pattern and is > very simple and works well: > http://logging.apache.org/log4j/1.2/faq.html#2.4 > > http://logging.apache.org/log4j/1.2/manual.html > > > > -----Original Message----- > From: DanyLux [mailto:dany.gilgo...@gmail.com] > Sent: Wednesday, November 04, 2009 7:22 AM > To: log4j-user@logging.apache.org > Subject: Log4j over several java classes > > > Hello to all users, > > I am new on Log4j. > I am doing a project in java with eclipse and my project has the following > structure: > > package > ----underpackage > ----categories > ----one > ----class1.java > ----class2.java > ----two > ----class3.java > ----class4.java <-- Applet > ----class5.java > ----three > ----LogFile.java > > And some other information: > class4 calls class3 and class5 > class2 is called by class1 and class1 called by class5. > > In LogFile i have written the following: > public class LogFile { > > private static final String dirname = "./log/"; //location of the log > files > private static Logger logger = Logger.getRootLogger(); > > /** > * This is the default constructor > */ > public LogFile() { > try { > PatternLayout layout = new PatternLayout( "%d (%c) [%t] > %-5p %m%n" ); > DailyRollingFileAppender fileAppender = > new DailyRollingFileAppender( layout, dirname + > "Log.log", > "'.'yyyy-MM-dd" ); > logger.addAppender( fileAppender ); > logger.setLevel(Level.INFO); > } catch( Exception ex ) { > System.err.println( ex ); > } > } > > public void logError(String message){ > logger.info("+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+"); > logger.info("Write several more information"); > logger.error(message); > } > } > > > And so I called it on the several classes: > private static LogFile lfLogging = new LogFile(); ..... > lfLogging.logError("Error Message is written here!"); > > > Well I entered it to all the class and the Logfile is written, the only > problem is when the method is called to write to logfile then it is not > just written once, but it is written 4 times the same. I commented in all > class just not in one the lines of logfile calling and then it just write > once in the LogFile. > > > Can somebody help me how I have to declare that my LogFile works > correctly. > > Many thanks in advance for your help. > > Best regards, > Dany > > > > > > > -- > View this message in context: > http://old.nabble.com/Log4j-over-several-java-classes-tp26195319p26195319.html > Sent from the Log4j - Users mailing list archive at Nabble.com. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: log4j-user-unsubscr...@logging.apache.org > For additional commands, e-mail: log4j-user-h...@logging.apache.org > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: log4j-user-unsubscr...@logging.apache.org > For additional commands, e-mail: log4j-user-h...@logging.apache.org > > > -- View this message in context: http://old.nabble.com/Log4j-over-several-java-classes-tp26195319p26196281.html Sent from the Log4j - Users mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: log4j-user-unsubscr...@logging.apache.org For additional commands, e-mail: log4j-user-h...@logging.apache.org
