I have java web application deployed in Tomcat. I created a classes folder under WEB-INF and had log4j.properties file under it. I want the logger to be appended in a file.
log4j.properties file :
log4j.rootLogger=DEBUG, CA
# AdminFileAppender - used to log messages in the admin.log file.
log4j.appender.AdminFileAppender=org.apache.log4j.FileAppender
log4j.appender.AdminFileAppender.File=admin.log
log4j.appender.AdminFileAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.AdminFileAppender.layout.ConversionPattern= %-4r [%t] %-5p %c %x - %m%n
# ReportFileAppender - used to log messages in the report.log file.
log4j.appender.ReportFileAppender=org.apache.log4j.FileAppender
log4j.appender.ReportFileAppender.File=report.log
log4j.appender.ReportFileAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.ReportFileAppender.layout.ConversionPattern= %-4r [%t] %-5p %c %x - %m%n
# ConsoleAppender
log4j.appender.CA=org.apache.log4j.ConsoleAppender
log4j.appender.CA.layout=org.apache.log4j.PatternLayout
log4j.appender.CA.layout.ConversionPattern= %-4r [%t] %-5p %c %x - %m%n
log4j.logger.com.sample.cfd=WARN,AdminFileAppender
log4j.logger.com.sample.cfd=DEBUG,ReportFileAppender
Code in Servlet
private static Logger logger = Logger.getLogger(CfdServlet.class);
dpPost(...){
PropertyConfigurator.configure("log4j.properties");
logger.debug("Sample debug message");
}
Error Message :
I get the following error as its not able to find my configuration file under WEB_INF/classes/log4j.properties
log4j:ERROR Could not read configuration file [log4j.properties].
java.io.FileNotFoundException: log4j.properties (No such file or directory)
Is something wrong in the location of my properties file.
Related
I need to create a new log file once a day, or if log file size become 250 MB. So how can i do this through log4j.properties file? Dividing by day is working, but if size become more than 250MB nothing happens.
My current property file is:
# Root logger option
log4j.rootLogger=INFO,console, file
# Direct log messages to a log file
log4j.appender.file=org.apache.log4j.rolling.RollingFileAppender
log4j.appender.file.encoding=UTF-8
log4j.appender.file.RollingPolicy=org.apache.log4j.rolling.TimeBasedRollingPolicy
log4j.appender.file.RollingPolicy.FileNamePattern=./logs/application_%d{dd-MM-yyyy}.log
log4j.appender.file.TriggeringPolicy=org.apache.log4j.rolling.SizeBasedTriggeringPolicy
log4j.appender.file.TriggeringPolicy.maxFileSize=250000
log4j.appender.rollingFile.MaxFileSize=10MB
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
# configuration to print on console
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.Target=System.out
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
As per the following log4j link https://logging.apache.org/log4php/docs/appenders/rolling-file.html, you have to add the following lines.
log4j.appender.file=org.apache.log4j.rolling.RollingFileAppender
log4j.appender.file.TriggeringPolicy=org.apache.log4j.rolling.SizeBasedTriggeringPolicy
log4j.appender.file.TriggeringPolicy.maxFileSize=250000
Note:
File Appender should be RollingFileAppender
Triggering Policy should be SizeBasedTriggeringPolicy
EDIT:
# Direct log messages to a log filelog4j.appender.file.encoding=UTF-8
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.TriggeringPolicy=org.apache.log4j.rolling.SizeBasedTriggeringPolicy
log4j.appender.file.File=${LOG_DIR}/application.log
log4j.appender.file.RollingPolicy.FileNamePattern=./logs/application_%d{dd-MM-yyyy}.log
log4j.appender.rfile.layout=org.apache.log4j.PatternLayout
log4j.appender.rfile.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
log4j.appender.file.MaxFileSize=250MB
log4j.appender.file.MaxBackupIndex=2
log4j.appender.file.append=true
You can refer complete example below.
https://howtodoinjava.com/log4j/log4j-rolling-file-appender/
How to append System.out.println() and System.err.println() in log file by using log4j properties file in project.
log=E:/log
log4j.rootLogger=DEBUG,CONSOLE,FILE
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.File=${log}/log_out.txt
log4j.appender.CONSOLE.Target=System.out
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.conversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} %-5p - %m%n
log4j.appender.FILE=org.apache.log4j.RollingFileAppender
log4j.appender.FILE.File=${log}/log_err.txt
log4j.appender.FILE.MaxFileSize=512KB
log4j.appender.FILE.MaxBackupIndex=3
log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE.layout.conversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} %-5p - %m%n
I'm facing an error log4j:WARN No such property [file] in org.apache.log4j.ConsoleAppender.
log4j.appender.CONSOLE.File=${log}/log_out.txt is not needed here, only log4j.appender.FILE.File=${log}/log_err.txt will do.
You are getting above error because log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender represents this class needs to be used as an appender in log4j, which does not contain file field. ConsoleAppender is used to append the console and RollingFileAppender writes it to the file specified.
I am new to log4j and worked to setup on eclipse and its running. I understood the chain of priority in the levels and this is my properties file config:
log4j.rootLogger=ALL, file, console
log4j.appender.console=org.apache.log4j.ConsoleAppender
logrj.appender.console.Target=System.out
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=%-5p %c{1} - %m%n
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=logs/justfortesting.log
log4j.appender.file.Append=true
log4j.appender.file.ImmediateFlush=true
log4j.appender.file.MaxFileSize=1KB
log4j.appender.file.MaxBackupIndex=2
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d %d{Z} [%t] %-5p (%F:%L) - %m%n
My question is
Is it possible to print only INFO and ERROR type of messages in log files with properties file configuration
Finally I got the solution for my requirement. Here I used concept of filters i.e LevelRangeFilter. And for every logging level we defined appender.
log4j.rootLogger=DEBUG, file, console, file1
log4j.appender.console=org.apache.log4j.ConsoleAppender
logrj.appender.console.Target=System.out
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=%-5p %c{1} - %m%n
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=logs/justfortesting.log
log4j.appender.file.Append=true
log4j.appender.file.ImmediateFlush=true
log4j.appender.file.Threshold=DEBUG
log4j.appender.file.filter.a=org.apache.log4j.varia.LevelRangeFilter
log4j.appender.file.filter.a.LevelMin=INFO
log4j.appender.file.filter.a.LevelMax=INFO
log4j.appender.file.MaxFileSize=1KB
log4j.appender.file.MaxBackupIndex=2
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d %d{Z} [%t] %-5p (%F:%L) - %m%n
log4j.appender.file1=org.apache.log4j.RollingFileAppender
log4j.appender.file1.File=logs/justfortesting.log
log4j.appender.file1.Append=true
log4j.appender.file1.ImmediateFlush=true
log4j.appender.file1.Threshold=DEBUG
log4j.appender.file1.filter.g=org.apache.log4j.varia.LevelRangeFilter
log4j.appender.file1.filter.g.LevelMin=ERROR
log4j.appender.file1.filter.g.LevelMax=ERROR
log4j.appender.file1.MaxFileSize=1KB
log4j.appender.file1.MaxBackupIndex=2
log4j.appender.file1.layout=org.apache.log4j.PatternLayout
log4j.appender.file1.layout.ConversionPattern=%d %d{Z} [%t] %-5p (%F:%L) - %m%n
log4j.logger.com.log4j=DEBUG, file, console, file1
log4j.additivity.com.log4j=false
If any one suggest to reduce the above properties configuration for same requirement,, please comment.
Try
log4j.appender.file.Threshold=INFO
Also see related SO question and documentation
I am using log4j in webapp deployed on tomcat, but cuurently my logs comes under catalina.log file, but only error logs remain in history, i want my all logs to be remain in history , additionally it will be good if if i get logs datewise.
my logs4j looks like this
log4j.rootLogger=INFO, myConsoleAppender
log4j.appender.myConsoleAppender=org.apache.log4j.ConsoleAppender
log4j.appender.myConsoleAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.myConsoleAppender.layout.ConversionPattern= [%t] %d{dd MMM yyyy HH:mm:ss,SSS} : %c %x : %m%n
i am only using info level of logs.
Try this
# Define the root logger with appender file
log4j.rootLogger = DEBUG, FILE
# Pattern to output the caller's file name and line number.
log4j.appender.stdout.layout.ConversionPattern=%-5p : %d{yyyy-MM-dd HH:mm:ss} %c{1}:%L - %m%n
# Define the daily rolling file appender
log4j.appender.FILE=org.apache.log4j.DailyRollingFileAppender
log4j.appender.FILE.File=/logs/app.log
log4j.appender.FILE.DatePattern='.'yyyy-MMM-dd
# Define the layout for the file appender
log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE.layout.ConversionPattern= %-5p : %d{yyyy-MM-dd HH:mm:ss} %c{1}:%L - %m%n
Above will create a log file on the tomcat installation directory under the folder logson daily basis. You can change the log file path by modifying the log4j.appender.FILE.File=/path/to/logfile
I was trying to route my Logging to two different files: one for INFO messages and another one for ERRORs. LevelMatchFilter seemed the right way to go. Unfortunately, all messages are logged to my info.log, not just the INFO messages. Any ideas what I did wrong?
Here's my config:
# Define the root logger with appender file
log4j.logger.com.my.class.ClassName=DEBUG, FILE, ERR, CA
# Define the info file appender
log4j.appender.FILE=org.apache.log4j.FileAppender
log4j.appender.FILE.File=info.log
log4j.appender.FILE.filter.a=org.apache.log4j.varia.LevelMatchFilter
log4j.appender.FILE.filter.a.LevelToMatch=INFO
log4j.appender.FILE.filter.a.AcceptOnMatch=true
# Define the layout for info file appender
log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE.layout.conversionPattern=%d %-5p %c - %m%n
# Define the error file appender
log4j.appender.ERR=org.apache.log4j.FileAppender
log4j.appender.ERR.File=error.log
log4j.appender.ERR.Threshold=ERROR
# Define the layout for error file appender
log4j.appender.ERR.layout=org.apache.log4j.PatternLayout
log4j.appender.ERR.layout.conversionPattern=%d %-5p %c - %m%n
log4j.appender.CA=org.apache.log4j.ConsoleAppender
log4j.appender.CA.layout=org.apache.log4j.PatternLayout
log4j.appender.CA.layout.ConversionPattern=%d %-5p %c - %m%n
I think your file appender config should look something like this:
# Define the info file appender
log4j.appender.FILE=org.apache.log4j.FileAppender
log4j.appender.FILE.File=info.log
log4j.appender.FILE.Threshold=INFO
log4j.appender.FILE.filter.a=org.apache.log4j.varia.LevelMatchFilter
log4j.appender.FILE.filter.a.LevelToMatch=INFO
log4j.appender.FILE.filter.a.AcceptOnMatch=true
log4j.appender.FILE.filter.b=org.apache.log4j.varia.LevelMatchFilter
log4j.appender.FILE.filter.b.LevelToMatch=ERROR
log4j.appender.FILE.filter.b.AcceptOnMatch=false
log4j.appender.FILE.filter.c=org.apache.log4j.varia.LevelMatchFilter
log4j.appender.FILE.filter.c.LevelToMatch=FATAL
log4j.appender.FILE.filter.c.AcceptOnMatch=false
I finally get a solution (using filters) to a similar problem without making an external XML file, here is the resulting code:
log4j.rootLogger=info, R, ERROR
#### only INFO
log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=FacturaElectronica.log
log4j.appender.R.MaxFileSize=500KB
log4j.appender.R.MaxBackupIndex=1
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%d [%t] %-5p %c - %m%n
log4j.appender.R.filter.a=org.apache.log4j.varia.LevelRangeFilter
log4j.appender.R.filter.a.LevelMin=INFO
log4j.appender.R.filter.a.LevelMax=INFO
#### only ERROR
log4j.appender.ERROR=org.apache.log4j.RollingFileAppender
log4j.appender.ERROR.File=FacturaElectronicaError.txt
log4j.appender.ERROR.MaxFileSize=500KB
log4j.appender.ERROR.MaxBackupIndex=1
log4j.appender.ERROR.layout=org.apache.log4j.PatternLayout
log4j.appender.ERROR.layout.ConversionPattern=%d [%t] %-5p %c - %m%n
log4j.appender.ERROR.filter.b=org.apache.log4j.varia.LevelMatchFilter
log4j.appender.ERROR.filter.b.LevelToMatch=ERROR
log4j.appender.ERROR.filter.b.AcceptOnMatch=true
log4j.appender.ERROR.Threshold=ERROR
LevelMatchFilter has nothing to do with what you need.
You need to define 2 loggers, one will have the ERR appender and the other the FILE appender:
log4j.logger.my.info.logger=INFO, FILE
log4j.logger.my.err.logger=ERROR, ERR
And in the code you need to provide the logger name when you initialize the logger:
static Logger logger = Logger.getLogger("my.info.logger");