This is my log4j property file, i need to get log file in this location, but it didn't create
# Root logger option
log = D:\\log
log4j.rootLogger=ALL, stdout
# Direct log messages to 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=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
in my class i initiate like this
private static final Logger LOGGER = Logger.getLogger(test.class);
& i added info or err when i need ex
LOGGER.info("Get Request from Service");
I can get this output in console but i didn't get that log file.
Use FileAppender for this purpose
# Root logger option
log4j.rootLogger=INFO, file
# Direct log messages to a log file
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=D:/log/application.log
log4j.appender.file.MaxFileSize=1MB
log4j.appender.file.MaxBackupIndex=1
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
read some
log4j tutorial
specify your file location here
log4j.appender.file.File=<location of your file goes here>
ex :log4j.appender.file.File=D:/log/application.log
Related
I have the following configuration in log4j.properties file:
# Root logger option
log4j.rootLogger=INFO, file, stdout
# Direct log messages to a log file
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=/data.log
log4j.appender.file.MaxFileSize=10MB
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
# Direct log messages to 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=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
In my Java Product class I've provided the Logger and PropertyConfigurator in the startTask method
static final Logger logger = Logger.getLogger(Product.class);
public void startTask() {
PropertyConfigurator.configure("log4j.properties");
try {
service.create(product);
logger.info("Creation started");
} catch (Exception e) {
// Log Exception
logger.error(e);
}
}
As a result there is a "Creation started" info message in the console. But nothing is logged into the data.log file. Could it be the problem with the file path? I have several modules in my project, each of them has a resources folder. And the data.log file is in the resources folder.
I tried to put the data.log file into the D:\ root folder but it didn't help.
I am using log4j to print the log using java but my log messages not visible in catlina.out file bello is my .properties file
# Root logger option
log4j.rootLogger=DEBUG, stdout
# Direct log messages to 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=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
please help
ConsoleAppender logs to the console. So you should use another appender, for example, FileAppender.
There is a way to print different layout for different log level? For example:
logger.warn("Message");
print something like this: 2016-06-20 13:34:41,245 INFO (main:) Message
and for logger.info("Message2");
print just: Message2
Is possible to do that? To define one layout to warn e other layout for info
log4j.properties
# Root logger option
log4j.rootLogger=INFO, file, stdout
# Direct log messages to a log file
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=log4j.log
log4j.appender.file.MaxFileSize=10MB
log4j.appender.file.MaxBackupIndex=10
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%m%n %d %-5p [%c] (%t:%x) %m%n
# Direct log messages to 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=%d %-5p [%c] (%t:%x) %m%n
I haven't tested but it should work. If you define two appenders and you assign a pattern for each appenders. Then the keyword Threshold should filter the level
:
# Root logger option
log4j.rootLogger=INFO, fileWarning, fileInfo, stdout
log4j.appender.fileWarning=org.apache.log4j.RollingFileAppender
log4j.appender.fileWarning.File=log4j.log
log4j.appender.fileWarning.MaxFileSize=10MB
log4j.appender.fileWarning.MaxBackupIndex=10
log4j.appender.fileWarning.layout=org.apache.log4j.PatternLayout
log4j.appender.fileWarning.layout.ConversionPattern=%m%n %d %-5p [%c] (%t:%x) %m%n
log4j.appender.fileWarning.Threshold=WARNING
log4j.appender.fileInfo=org.apache.log4j.RollingFileAppender
log4j.appender.fileInfo.File=log4j.log
log4j.appender.fileInfo.MaxFileSize=10MB
log4j.appender.fileInfo.MaxBackupIndex=10
log4j.appender.fileInfo.layout=org.apache.log4j.PatternLayout
log4j.appender.fileInfo.layout.ConversionPattern=%m%n
log4j.appender.fileInfo.Threshold=INFO
Hope it's help.
Everything works just as fine. But showing this error.
My log4j.properties file like :
# 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.DailyRollingFileAppender
log4j.appender.myAppender.DatePattern='.'yyyy-MM-dd
log4j.appender.file.File=D:\\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
Thanks in advance. Just tell me how to do it. I just want log file on daily rolling .
DailyRollingFileAppender doesn't support MaxFileSize, RollingFileAppender does.
DailyRollingFileAppender is for rolling files based on the date and time of the log entry, so if you want to use it you should remove the MaxFileSize property.
I changed the code to
log4j.appender.FILE=org.apache.log4j.RollingFileAppender
from
log4j.appender.FILE=org.apache.log4j.FileAppender
and it worked fine in log4j.properties file
I am working on log4j with Java. I am redirecting all my applications logger messages to a specific folder inside my project like this:
logs/log4j-MyFirstClass.log
If I want to redirect specific file messages to specific log file, for ex: ABC.java logger messages to ABC.log file, then how should I change this log4J.properties file ? Please help. Here is my log4j.properties file:
# 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=logs/log4j-MyFirstClass.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
You need to define an appender for each file, then specify which packages use which appender.
# Root logger option; everything logs to console at debug
log4j.rootLogger=INFO, stdout
# Classes in package com.foo.bar will use the file1 appender
log4j.logger.com.foo.bar=file1
# Classes in package com.whizz.bang will use the file2 appender, note we also overrode the default log level
log4j.logger.com.whizz.bang=DEBUG, file2
# 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
# Appender for file 1
log4j.appender.file1=org.apache.log4j.RollingFileAppender
log4j.appender.file1.File=logs/log4j-first.log
log4j.appender.file1.MaxFileSize=5MB
log4j.appender.file1.MaxBackupIndex=10
log4j.appender.file1.layout=org.apache.log4j.PatternLayout
log4j.appender.file1.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
# Appender for file 2
log4j.appender.file2=org.apache.log4j.RollingFileAppender
log4j.appender.file2.File=logs/log4j-second.log
log4j.appender.file2.MaxFileSize=5MB
log4j.appender.file2.MaxBackupIndex=10
log4j.appender.file2.layout=org.apache.log4j.PatternLayout
log4j.appender.file2.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n